Everything posted by Carlston
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Spring Mystery
Which front and rear springs were fitted in the factory depends on the car's build codes. For example, build codes G03+L18 would mean the front springs have OEM part number 6Q0411105S and build codes 1JB+0YB would mean the rear springs have OEM part number 6Q0511115AC. As you can see in the charts below, the Fabia MK2 with build codes G03 and 1JB can have one of seven front springs and one of four rear springs. Fabia MK2 front coil spring G03=heavy duty suspension/increased ride height 1 6Q0411105Q Front coil spring 1 paint mark 1 paint mark red blue L16 1 6Q0411105R Front coil spring 1 paint mark 2 paint marks red blue L17 1 6Q0411105S Front coil spring 1 paint mark 3 paint marks red blue L18 1 6Q0411105T Front coil spring 1 paint mark 4 colour strokes red blue L19 1 6Q0411105AA Front coil spring 2 paint marks 1 paint mark red blue L20 1 6Q0411105AB Front coil spring 2 paint marks 2 paint marks red blue L21 1 6Q0411105BD Front coil spring 2 paint marks 2 paint marks red brown L33 https://www.lllparts.co.uk/catalogs/skoda/CZ/FAB/697/4/411/411011 Fabia MK2 rear coil spring 1JB-heavy duty suspension/increased ride height 1 6Q0511115AH Rear coil spring 1 paint mark 3 paint marks 1 paint mark orange blue yellow 0YA 1 6Q0511115AC Rear coil spring 1 paint mark 2 paint marks 1 paint mark orange blue yellow 0YB 1 6Q0511115AD Rear coil spring 1 paint mark 2 paint marks 2 paint marks orange blue yellow 0YC 1 6Q0511115AE Rear coil spring 1 paint mark 2 paint marks 1 paint mark orange blue green 0YD https://www.lllparts.co.uk/catalogs/skoda/CZ/FAB/697/5/511/511010 Fabia MK2 front coil spring G03=heavy duty suspension/increased ride height 6Q0411105Q https://www.autodoc.co.uk/car-parts/oem/6q0411105q 6Q0411105R https://www.autodoc.co.uk/car-parts/oem/6q0411105r 6Q0411105S https://www.autodoc.co.uk/car-parts/oem/6q0411105s 6Q0411105T https://www.autodoc.co.uk/car-parts/oem/6q0411105t 6Q0411105AA https://www.autodoc.co.uk/car-parts/oem/6q0411105aa 6Q0411105AB https://www.autodoc.co.uk/car-parts/oem/6q0411105ab Fabia MK2 rear coil spring 1JB-heavy duty suspension/increased ride height 6Q0511115AH https://www.autodoc.co.uk/car-parts/oem/6q0511115ah 6Q0511115AC https://www.autodoc.co.uk/car-parts/oem/6q0511115ac 6Q0511115AD https://www.autodoc.co.uk/car-parts/oem/6q0511115ad
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Estate rear spring replacement heavy duty.
As you have a VRS, you will probably have independent rear suspension and lowered ride height which have the following range of rear springs listed in the Octavia MK4 parts catalogue. As Pete mentioned, you've got 5Q0511115FL rear springs, which is the sixth rear spring in the list of ten rear springs below. The gknautomotive.com spring catalogue also lists the Octavia MK4 2.0TDI VRS estate as having 5Q0511115FL rear springs. As you carry lots of weight, I suggest going up two in the hierarchy which should increase the stiffness of the rear springs by about 10%. Perhaps Bilstein 36-302444 or Kilen 50254...which I've linked to below. Rear springs for Octavia MK4, 0N4=independent rear suspension, 1JC=lowered ride height 1 5Q0511115FF Coil spring 1JC+0YA 1 5Q0511115FG Coil spring 1JC+0YB 1 5Q0511115FH Coil spring 1JC+0YC 1 5Q0511115FJ Coil spring 1JC+0YD 1 5Q0511115FK Coil spring 1JC+0YE 1 5Q0511115FL Coil spring 1JC+0YF 1 5Q0511115FM Coil spring 1JC+0YG 1 5Q0511115FN Coil spring 1JC+0YH 1 5Q0511115FP Coil spring 1JC+0YJ 1 5Q0511115FQ Coil spring 1JC+0YK https://www.lllparts.co.uk/catalogs/skoda/CZ/OCT/585/5/511/511004 5Q0511115FL rear spring Bilstein 36-301881 rear spring (sold to replace one OEM part number so should be an exact match) Kilen 50253 rear spring (sold to replace two different OEM part numbers so might not be an exact match) https://www.autodoc.co.uk/car-parts/oem/5q0511115fl?search=OEN+5Q0511115FL 5Q0511115FM rear spring Bilstein 36-301898 rear spring (sold to replace two different OEM part numbers so might not be an exact match) https://www.autodoc.co.uk/car-parts/oem/5q0511115fm?search=OEN+5Q0511115FM 5Q0511115FN rear spring Bilstein 36-302444 rear spring (sold to replace two different OEM part numbers so might not be an exact match) Kilen 50254 rear spring (sold to replace four different OEM part numbers so might not be an exact match) https://www.autodoc.co.uk/car-parts/oem/5q0511115fn?search=OEN+5Q0511115FN Kilen 50254 rear spring listed on ebay https://www.ebay.co.uk/itm/192915631472
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VW Up GTI tyre options - borrow from Citigo?
If he's in one of those strict EU countries such as Germany, he would have to stick with the tyre and rim sizes that are listed in the car's CoC (Certificate of Conformity). This might include 185/55R15 fitted to a 5.5Jx15 ET41 4/100 57.1 rim. If this size is listed in the car's CoC, then they should fit. 15" alloy rim and matching hub cap for Up! 1 1S0601025R Aluminium rim 'WAFFLE' 5.5Jx15 ET41 4/100 57.1 1S0601025R 8Z8 Diamond silver 2 1S0601149D Hub cap 1S0601149D CIX silver/white https://www.lllparts.co.uk/catalogs/vw/RDW/UP/723/6/601/601050 5.5Jx15 ET41 4/100 57.1 alloy rims WAFFLE (for VW UP!) (£349.99 for a set of four) https://www.ebay.co.uk/itm/195538276336 Hub cap 1S0601149D CIX https://www.ebay.co.uk/itm/196529674050
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Spare wheel
The below foam and jack kit can be ordered from any VAG parts department by quoting OEM part number 5E0093860E. The online Czech price is about £46.07, but the UK price might be slightly more. The actual spare wheel can be purchased separately. mytyres can supply an Alcar 8667 6.5Jx16 ET46 5/112 57.1 steel rim for £42.20 including shipping from Germany to the UK. mytyres can also supply the rim with a fitted tyre of your choice. Octavia MK3 foam and jack kit for 16" spare wheel (includes everything except for the actual spare wheel) (OEM part number 5E0093860E) (1369CZK is about £46.07) https://eshop.skoda-auto.cz/cs_CZ/sada-pro-vymenu-rezervniho-kola-16/p/5E0093860E Alcar 8667 6.5Jx16 ET46 5/112 57.1 steel rim (for Octavia MK3) (£42.20) https://www.mytyres.co.uk/rims/details?vehicleId=646714047761384560&rimCode=ALCAR8667
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Jump starting a flat battery?
I would just connect a battery charger to the cigarette lighter socket...although this does require patience, but you might find that the car will start after just one or two hours even with a slow 3.5A battery charger, ie. the battery doesn't need to be anywhere near full for the car to be able to start...perhaps just 20% of a full charge. Something like this would be helpful, but zip tie the red positive lead connector away from the black negative lead connector...or it's easy to short circuit and blow the fuse. I'm not a fan of fast charging because it is very easy to damage the battery cells with these, and much prefer a 3.5A battery charger that switches down to a trickle charge of about 0.2A when the battery is almost full. If the cigarette lighter socket is fused with a 10A fuse, you wouldn't be able to use more than a 10A battery charger. Another tip is to connect a multimeter to the below wires when you have a battery charger connected and charging. This lets you see the charging voltage rise, and also lets you see when the trickle charging is still charging. However, with the car's 12V battery still connected to the car there's probably no need to trickle charge as the normal 3.5A charge will charge the 12V battery to about 80%...which is enough to let the car's own charging system take over. On the Bosch C10 battery charger, the trickle charging stops when the charging voltage hits about 14.95V. A similar thing happens when the normal 3.5A charge switches to trickle charger. I noticed that the normal 3.5A charger switches over to trickle charge at different voltages depending on battery chemistry. The normal SLA (Sealed Lead Acid) battery switched over to trickle charge at a lower voltage compared to the AGM battery. It was about 13.6V for the SLA battery, but the AGM battery didn't switch over to trickle charger until a much higher 14.95V. Car 12V cigarette lighter power supply https://www.ebay.co.uk/itm/175764521528 I use this Bosch C10 12V 3.5A battery charger, but I do use it in conjunction with a multimeter to keep an eye on the voltage while the battery is being charged. For example, a LED tells you when the normal 3.5A charge has finished but there's no LED to tell you when the 0.2A trickle charge has finished...you can tell with a multimeter connected because the voltage starts to slowly drop when the trickle charging has finished. Car 12V Bosch C10 3.5A battery charger https://www.amazon.co.uk/Bosch-Battery-Charger-Trickle-Function/dp/B0CJTZWZCN/ref=sr_1_5
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Replacement Shock Absorbers. Bilstein part number.
autodoc are listing the following Bilstein B6 DCC shock absorbers for the Superb MK3 2.0TSI 280HP 4x4. You could always contact Bilstein directly with your car's VIN number to confirm these are correct, but I doubt they do any other Bilstein B6 DCC models that would fit. These same shock absorbers are also used on the Passat B8. There is also Bilstein B4 DCC, but they might not be much cheaper than the Bilstein B6 DCC. Superb MK3 2.0TSI 280HP 4x4 Bilstein B6 23-254343 front shock absorbers DCC Bilstein B6 20-267537 rear shock absorbers DCC
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tyres - ratings?
In the May 2017 Yeti owner's manual (English version) it says the following on page 152... All-year or "winter tyres (marked with M+S and a peak/snowflake symbol of a lower speed category than listed in the vehicle's technical documentation can be used provided that the maximum permissible speed for these tyres is not exceeded even if the maximum possible speed of the vehicle is higher. There are no minimum speed rating requirement for winter rated car tyres which include all season tyres that have the 3PMSF symbol (all the good brands of all season tyres have the 3PMSF symbol). There's plenty of all season tyres in size 225/50R17 with a V (240km/h/150mph) speed rating, which is twice what you actually need on UK roads. Bear in mind, no Yeti has a top speed of over 130mph/210km/h so even if you fitted H speed rated tyres with the 3PMSF symbol (ie. winter rated tyres) you wouldn't need to drive at a reduced top speed even on the German autobahn. Explanation of why winter rated tyres can have a lower speed rating than summer tyres Some winter tyres might only be available in a T (118mph/190km/h) speed rating or lower, such as nordic winter tyres. Nordic winter tyres are made for very cold temperatures such as minus 20 degrees Centigrade that you might experience in countries such as Finland, Sweden, Norway, etc. These nordic winter tyres are made of very soft rubber so that they still give good grip at very low temperatures. If a nordic winter tyre had to be made to cope with driving at very high speed such as over 150mph (240km/h) it wouldn't actually be a nordic winter tyre because this very soft rubber would overheat at such a high speed. Hence, why winter rated tyres can be speed rated lower than the summer tyres that are shown in the car's documentation such as the CoC (Certificate of Conformity). The Michelin CrossClimate 2 225/50R17 94W is available...as shown in the link below. Michelin CrossClimate 2 225/50R17 94W (Euro label C B 71dB) https://www.mytyres.co.uk/rshop/tyre/Michelin/CrossClimate-2/225-50-R17-94W/R-440179 Skoda owner's manuals can be downloaded from skoda.co.uk https://www.skoda.co.uk/apps/manuals/Models
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Brake pads advice
When looking for aftermarket front brake pads for the 1ZE brake system (which uses ATE front brake calipers) you can also use the earlier OEM part number 5K0698151. This can be useful because some aftermarket front brake pads aren't yet linked to the newer 5K0698151B OEM part number. Aftermarket front brake pads sold to replace 5K0698151 https://www.autodoc.co.uk/car-parts/oem/5k0698151 The TRW option seems reasonably priced, but there are many other options including ATE. TRW GDB1550 front brake pads 1ZE (£31.83 including UK shipping) https://www.ebay.co.uk/itm/315709403955
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Octavia vrs alternate wheel options?
The below 7Jx17 ET46 alloy rim normally uses a 205/55R17 tyre size on the Octavia MK4, but as it is a 7J rim width 225/50R17 could be used. This is a non-standard tyre size on the Octavia MK4. 7Jx17 ET46 5/112 57.1 alloy rim (from Octavia MK4) https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-slagard-17-octavia-iv/p/5E3071497D+FL8 The below 7Jx17 ET45 alloy rims are normally used with 215/55R17 tyres on the Karoq. However, they could be used with 225/50R17 tyres on the Octavia MK4. It's a non-standard tyre and rim specification on the Octavia MK4. It's almost the same specification as the above 7Jx17 ET46 alloy rim, except that the offset is ET45. Using ET45 instead of ET46 moves the centre of the tyre 1mm further out in the wheelarch, so the front and rear track increases by 2mm. This is a very small difference which is unlikely to be noticed. 7Jx17 ET45 5/112 57.1 alloy rim (from Karoq) https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-ratikon-17-karoq/p/57A071497C+8Z8 7Jx17 ET45 5/112 57.1 alloy rim (from Karoq) https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-ratikon-17-karoq/p/57A071497D+FL8 The 225/50R17 would give much better ride comfort compared to 225/40R19 and protect the alloy rim much better from potholes and kerbs. The massive improvement in protection from kerbing damage is shown in the chart below, ie. the sidewalls on the 225/50R17 fitted to a 7J rim width bulge out each side by more than three times more compared to the 225/40R19 fitted to a 7.5J rim width. The rim protection provided by sidewalls that bulge out each side by about 5mm is very poor. The rim protection provided by sidewalls that bulge out each side by about 15mm is very good. It is a night and day difference in the amount of rim protection from kerbing damage. You only get this kind of rim protection from kerbing damage when you use 50 aspect ratio or higher tyres. 40 and 45 aspect ratio tyres just don't offer much protection from kerbing damage. Tyre sidewalls bulge out from the alloy rim by about this much each side 225/40R19 fitted to 7.5J rim 4.75mm 225/50R17 fitted to 7J rim 15.6mm As you can see in the chart below, 225/50R17 has a 0.9% smaller outside diameter compared to 225/40R19. Less than 1.5% difference is generally considered insignificant. Outside diameter of tyres 225/40R19 662.6mm 225/50R17 656.8mm (0.9% smaller outside diameter compared to 225/40R19) As you can see in the ETRTO chart below, 225/50R17 can be fitted to a 7J rim. In fact, Skoda fitted 225/50R17 to a 7J rim width on both the Yeti and the Octavia MK3 Scout 4x4. ETRTO approved rim widths for passenger car tyres 225/50R17 6.0-7.0-8.0 As you can see in the two charts below, the 225/50R17 tyre size has a much higher load carrying capacity compared to the 225/40R19 tyre size. This means that lower tyre pressures can be used with the 225/50R17 tyre size compared to the 225/40R19 tyre size. Standard Load index 225/40R19 89 (580kg) 225/50R17 94 (670kg) 15.5% higher standard load index compared to 225/40R19 eXtra Load index 225/40R19 93 (650kg) 225/50R17 98 (750kg) 15.4% higher eXtra Load index compared to 225/40R19 Another advantage of the 225/50R17 tyre size compared to the 225/40R19 tyre size is cost. It's a much cheaper tyre size.
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Can anyone recommend a good supplier for Audi S3 front brake discs please?
Have you considered ATE PowerDisc front brake discs, as shown in the photo below? In my view, they look more high tech than the drilled Brembos. However, I haven't seen ATE PowerDiscs for the rear 310x22mm brake discs...whereas I have seen Brembo drilled rear brake discs in that size. Here's a photo of an ATE PowerDisc 345x30mm front brake disc. It has a minimum wear of 27mm, which is about 36% more wear than the below drilled Brembo front brake disc. Here's a photo of Brembo 345x30mm drilled front brake disc. The minimum wear is 27.8mm, so you would get over 36% more wear on the ATE front PowerDiscs before they needed replacing. https://www.autodoc.co.uk/brembo/13801758#brake-disc
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Tyres and wheels
In the November 2014 edition of the Superb MK2 owner's manual it states the following on page 203: "Winter tyres (marked with M+S and a peak/snowflake symbol) of a lower speed category can be used provided that the permissible maximum speed of these tyres is not exceeded even if the possible maximum speed of the vehicle is higher." Skoda owner's manuals can be downloaded from skoda.co.uk including the one referenced here https://www.skoda.co.uk/apps/manuals/Models Example If you fit 225/45R17 winter tyres to a Superb MK2 3.6 they won't be W or Y speed rated, because winter tyres aren't available in this size with a speed rating higher than V. So you would fit V speed rated or winter tyres (or lower if you so choose) and Skoda approve because they say so in the owner's manual (as I've quoted above). If you wanted to use a nordic winter tyre in size 225/45R17 you might choose a T speed rating, even on the Superb MK2 3.6. Nordic winter tyres are for very cold temperatures that you experience in many countries such as Finland, Sweden, and Norway. The reason nordic winter tyres aren't made for high speeds is because the tyre manufacturers would have to make the rubber harder to cope with the heat generated by driving at very high speeds. By making the rubber harder, the tyre would have a lot less grip in very cold temperatures, so it wouldn't actually be a nordic winter tyre. Hence, you won't find a nordic winter tyre that's made for very high speeds. Hence, Skoda doesn't limit how low you can go with regards to the speed rating for winter tyres. If they did, it would mean reducing your tyre's grip in very cold weather...which simply wouldn't be clever.
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Standard springs part number help
Is your Octavia MK3 2.0TSI VRS a hatchback or estate and does it have a manual or automatic gearbox. From the OEM part numbers that Pete gave and going by the information in the Kilen and gknautomotive.com online spring catalogues, I would guess it's a hatchback with manual gearbox. In the below two links, Kilen/Lesjofors are the same spring and KYB/Japko/Ashika/Japanparts appear to be the same spring. Japko are currently the cheapest on autodoc but I have a slight preference for Kilen/Lesjofors. Kilen/Lesjofors are made in the same factory in Sweden and they are the biggest aftermarket manufacturer of car springs in Europe. Front springs 5Q0411105HC https://www.autodoc.co.uk/car-parts/oem/5q0411105hc?supplier[]=193&supplier[]=253&supplier[]=85&supplier[]=10914&supplier[]=10029&supplier[]=246 Kilen 25113 https://www.ebay.co.uk/itm/392296324147 Rear springs 5Q0511115Q https://www.autodoc.co.uk/car-parts/oem/5q0511115q?supplier[]=246&supplier[]=10914&supplier[]=85&supplier[]=253&supplier[]=10029&supplier[]=193 Kilen 63142 https://www.ebay.co.uk/itm/192915683788
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Tyres and wheels
In the Skoda winter wheels catalogue, the Scala winter wheels aren't offered with winter tyres that have a speed rating more than H yet the 1.5 petrol models have a top of speed of over 130mph and quite naturally have summer tyres with a speed rating higher than H. Yet Skoda do approve H rated winter tyres for the 1.5 petrol model with its over 130mph top speed. This is common knowledge in many European countries because unlike the UK with its mild winters many places on the continental have cold winters and therefore swap their summer tyres to winter tyres every winter. In many countries on the continent, using winter tyres in the winter is compulsory...hence their greater level of expertise in this area. It's common practice on the continent for owners to fit winter tyres that are narrower and with higher sidewalls than their summer tyres. For example, on the continent a Scala owner might run 205/55R16 summer tyres but change to 195/65R15 winter tyres. That why it says in the Skoda owner's manual that you can fit winter tyres with a lower speed rating than the speed rating for the summer tyres. There's no mention about only being only allowed to fit one speed rating lower. So even if your summer tyres need a W or Y speed rating Skoda still approves H speed rated winter tyres. However, I suspect many owners would only go one speed rating lower than their summer tyres, ie. if their summer tyres are V speed rated, they might choose H speed rated winter tyres. I'm using the Scala as an example, because the Superb MK2 is an old car and therefore Skoda no longer sell winter wheels for this car in their winter wheels catalogue...but the principle remains the same. The reason that this lowering of the speed rating for winter tyres is acceptable is because winter tyres tend to be available in lower speed ratings than summer tyres. For example, mytyres are currently listing 234 winter tyres in size 215/60R16 but only 6 of those 234 winter tyres have a speed rating of more than H...and most of those 6 are not good tyres. So if you had a Superb MK3 that needed V speed rated summer tyres you could use H speed rated winter tyres...and in this size Skoda only list H speed rated winter tyres in their winter wheels catalogue for the Superb MK3. So if your Superb MK3 needed V speed rated summer tyres you could use H speed rated winter tyres.
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Tyres and wheels
205/55R16 91H or 205/55R16 94H XL winter tyres are approved by Skoda for the Superb MK2 facelift, except the 3.6 litre V6 that needs at least 17" rims. If they weren't approved by Skoda, Superb MK2 owners in some of the strict European countries such as Germany wouldn't be able to fit them and Skoda wouldn't have listed them in their Skoda winter wheels catalogue. The Skoda winter wheels catalogue no longer lists the Superb MK2 winter wheels because it's an old car, but looking at the Superb MK3 winter wheels shows that Skoda sells V-speed rated winter tyres for its 220HP and 272HP/280HP models even though those cars have a top speed of over 150mph...so would need W-speed rated or Y-speed rated tyres if they were summer tyres. If a Superb MK3 220HP owner wanted to purchase 16" winter tyres through the Skoda winter wheels catalogue, they would fit H-speed rated winter tyres, ie. at least two speed ratings lower than their summer tyres because their summer tyres would have to be at least W-speed rated due to the over 150mph top speed (or Y-speed rated if that's what it says in their car's CoC Certificate of Conformity). In strict European countries such as Germany the owner can only fit tyres and rims that meet the specifications shown in the CoC, always with the proviso that the speed rating of winter tyres can be lower...although you mustn't exceed the speed rating of the tyre. For example, if your car is fitted with V-speed rated winter tyres you mustn't exceed 150mph. Skoda winter wheels (catalogue dated 20/9/2023) https://www.skoda-auto.com/_doc/c829936c-f0c1-48a3-bd99-55a507038e8c
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Standard springs part number help
In addition to the information in my above post, I've looked at information in the Kilen online spring catalogue for standard ride height springs on the Octavia MK3 1.8TSI 180HP front wheel drive car. Most notably, this catalogue lists 5Q0511115E and 5Q0511115G rear springs for this car which I've included in the chart below. Here's my suggested standard ride height springs for the Octavia MK3 VRS. Standard ride height springs for Octavia MK3 VRS front wheel drive Front spring (manual gearbox) 5Q0411105GK Front spring (automatic gearbox) 5Q0411105GL Rear spring (hatchback) 5Q0511115E Rear spring (estate) 5Q0511115G
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Standard springs part number help
The Kilen online spring catalogue shows the following springs for the various Octavia MK3 VRS front wheel drive models. Kilen online spring catalogue Front spring (Octavia MK3 VRS, petrol and diesel, manual gearbox, front wheel drive) 5Q0411105HD Front spring (Octavia MK3 VRS, petrol and diesel, automatic gearbox, front wheel drive) 5Q0411105HF Rear spring (Octavia MK3 VRS, petrol and diesel, hatchback, front wheel drive) 5Q0511115Q Rear spring (Octavia MK3 VRS, petrol and diesel, estate, front wheel drive) 5Q0511115R The gknautomotive.com online spring catalogue shows the following springs for the various Octavia MK3 VRS front wheel drive models. gknautomotive.com online spring catalogue Front spring (Octavia MK3 VRS, petrol and diesel, manual gearbox, front wheel drive) 5Q0411105HC Front spring (Octavia MK3 VRS, petrol and diesel, automatic gearbox, front wheel drive) 5Q0411105HD Rear spring (Octavia MK3 VRS, petrol and diesel hatchback, front wheel drive) 5Q0511115P Rear spring (Octavia MK3 VRS, petrol and diesel, estate, front wheel drive) 5Q0511115R As you can see in the two charts above, Kilen and gknautomotive.com don't always agree on which is the correct spring. The Octavia MK3 2.0TSI 190HP springs could be used to change the Octavia MK3 VRS lowered ride height springs to standard ride height springs. This is because most of the lower powered Octavia MK3 front wheel drive cars have a rigid rear axle, but the 1.8TSI 180HP and 2.0TSI 190HP cars use multi-link rear suspension like the VRS models. This is an important point, because rear springs for the rigid rear axle and the multi-link rear axle are different, ie. they have different OEM part numbers. gknautomotive.com online spring catalogue Front spring (Octavia MK3 2.0TSI 190HP, manual gearbox, front wheel drive) 5Q0411105GK Front spring (Octavia MK3 2.0TSI 190HP, automatic gearbox, front wheel drive) 5Q0411105GL Rear spring (Octavia MK3 2.0TSI 190HP, hatchback, front wheel drive) 5Q0511115D Rear spring (Octavia MK3 2.0TSI, 190HP, estate, front wheel drive) 5Q0511115E Note that the above 5Q0411105GL front spring is actually listed for the Octavia MK3 2.0TDI 150HP with automatic gearbox, but it makes sense that it would also be correct for the Octavia MK3 2.0TSI 190HP with automatic gearbox..hence I've added 5Q0411105GL to the above chart. gknautomotive.com just list the 5Q0414105GK front spring for the Octavia MK3 2.0TSI 190HP without making any reference to the manual or automatic gearbox. gknautomotive.com online spring catalogue Front spring (Octavia MK3 2.0TDI 150HP, manual gearbox, front wheel drive) 5Q0411105GK Front spring (Octavia MK3 2.0TDI 150HP, automatic gearbox, front wheel drive) 5Q0411105GL Rear spring (Octavia MK3 2.0TDI 150HP, hatchback, front wheel drive) 5Q0511121AD Rear spring (Octavia MK3 2.0TDI 150HP, hatchback with towbar, front wheel drive) 5Q0511121AF Rear spring (Octavia MK3 2.0TDI 150HP, estate, front wheel drive) 5Q0511121AF Notice in the above chart that the OEM part numbers for the rear springs for the Octavia MK3 2.0TDI 150HP front wheel drive use a different format compared to the multi-link rear springs, ie. 5Q0511121xx are rear springs for the rigid rear axle and 5Q0511115xx rear springs are for the multi-link rear axle.
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Tyres and wheels
The Skoda Superb MK2 owner's manual says that winter tyres can be used with a lower speed rating providing that the maximum speed of the tyre isn't exceeded. A winter tyre is marked with the M+S and 3PMSF symbols, so all-season tyres are regarded as winter tyres when they have these symbols. Therefore, H speed rated tyres could be used on a Superb MK2 even if the car is capable of over 130mph. When fitted with 205/55R16 tyres, the pre-facelift Superb MK2 needs a 94 load index (according to official Skoda documentation). When fitted with 205/55R16 tyres, the facelift Superb MK2 can be fitted with either 91 or 94 load index tyres (according to official Skoda documentation). So although I previously gave 205/55R16 94V XL as an example 205/55R16 tyre specification, a winter or all-season (marked with the M+S and 3PMSF symbols) 205/55R16 91H tyre could be used instead even where the car is capable of over 130mph. Here's an example of a 205/55R16 91H tyre https://www.camskill.co.uk/m139b0s8003p208585/Michelin_Tyres_All_Season_Car_Michelin_Cross_Climate_2_205_55_R16_91H_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_B_NoiseClass%3A_A_Noise%3A_69dB
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Tyres and wheels
Here's an example of a suitable 16" wheel for the Superb MK2. It will fit all models, except for the 3.6litre V6 petrol that needs at least 17" wheels. 16" wheels are far more resistant to pothole damage on the Superb MK2 than the very unpractical 18" wheels, and will give a far more comfortable ride. Alcar 9257 7Jx16 ET45 5/112 57.1 steel rim (for Superb MK2) (£45.00 each including shipping to the UK from Germany) https://www.mytyres.co.uk/rims/details?vehicleId=182363349315490928&rimCode=ALCAR9257 The below set of four wheel trims for the above steel rims can be ordered from any VAG parts department by quoting OEM part number 5L0071456 Z31. The UK price might be slightly more than the £63.03 Czech price. Set of four wheel trims for 7Jx16 ET45 5/112 57.1steel rim 5L0071456 Z31 (1869CZK is about £63.03) https://eshop.skoda-auto.cz/cs_CZ/sada-poklic-satellite-16/p/5L0071456++Z31 Alcar 9257 steel rims with fitted Continental AllSeasonContact 2 205/55R16 94V XL tyres (£157.76 each) https://www.mytyres.co.uk/cw/bundle?vehicle_ids=182363349315490928&wheelId=SKWi-9257--D-127967&wheelIdWithTpms=&season=gan&rimType=steel
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Spare Wheel/Tyre
The foam and jack kit (includes everything except for the actual spare wheel) for the Octavia MK4 is listed at 1609CZK (about £54.23) on "skoda eshop cz"...so it's not expensive. It can be ordered from any VAG parts department by quoting OEM part number 5E3093860B although it might be a little more than the Czech price. And the 205/55R16 tyre size is incorrect for the Octavia MK4 because it uses bigger outside diameter tyres compared to the Octavia MK3...ie. 205/60R16 instead of 205/60R16. The Octavia MK3 foam and jack kit might not even fit properly in the Octavia MK4 (if at all)...although I haven't tried it. Foam and jack kit for Octavia MK4 5E3093860B https://eshop.skoda-auto.cz/cs_CZ/sada-pro-vymenu-rezervniho-kola-18/p/5E3093860B
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What size wheels/tyres will fit to Superb III
As you can see in the chart below, the 235/35R20 tyre size has a 12.5% smaller sidewall height than the 235/40R19 tyre size. Sidewall height 235/40R19 94mm 235/35R20 82.25mm (12.5% smaller sidewall height) As you can see in the chart below, the 235/40R19 has a 12.5% bigger standard load index. This means that if you use 32psi with the 235/40R19 tyre size you would have to use about 36psi with the 235/35R20 tyre size. Comparing the eXtra Load index of the two tyre sizes gives a similar 12.7% increase for the higher sidewalled tyre. Even if you didn't use the extra 4psi with the lower sidewalled tyre, the ride would feel harder than the higher sidewalled tyre...so with the additional 4psi the ride is going to feel a lot harder. Additionally, you are using a 0.5" wider 8.5J rim instead of the standard 8J rim that the 235/40R19 tyre size uses which again makes the ride even harder because the relatively wider rim will make the sidewalls less easy to flex when going over bumps in the road. Fortunately, the Superb MK3 does come with quite soft suspension so that is going to help the ride a lot. Standard Load index (SL) 235/40R19 92 (630kg) (12.5% bigger standard load index) 235/35R20 88 (560kg) eXtra Load index (XL) 235/40R19 96 (710kg) (12.7% bigger extra load index) 235/35R20 92 (630kg) So to sum up, going from a 235/40R19 to a 235/35R20 is not a small change.
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Brake disc size
The Octavia MK3 2.0TDI VRS pre-facelift might have 340x30mm front discs and 272x10mm rear discs. To be sure, it's always best to check the car's build codes. However, if your rear brake discs are solid (ie. not ventilated) they will be 272x10mm. If you've got the big 340x30mm front brake discs you won't be able to fit 16" rims over them (or more specifically, over the front brake calipers), ie. 17" rims are the minimum size for these big front discs. Jurid are a lower cost option than TRW and ATE, but should still be OE quality. Octavia MK3 Brake Pads and Brake Discs TRW Front Brake Pads 1ZF 276x24mm TRW GDB2080 1ZE 288x25mm TRW GDB1956 1ZA 312x25mm TRW GDB1956 1ZB 312x25mm TRW GDB1956 1LG 340x30mm TRW GDB2114 TRW Rear Brake Pads 1KD 253x10mm TRW GDB1330 1KS 272x10mm TRW GDB2042 1KT 272x10mm TRW GDB2042 1KW 310x22mm TRW GDB1622 ATE Front Brake Discs 1ZF 276x24mm ATE 24012402581 1ZE 288x25mm ATE 24012501451 1ZA 312x25mm ATE 24012501581 1ZB 312x25mm ATE 24012501581 1LG 340x30mm ATE 24013002251 ATE Rear Brake Discs 1KD 253x10mm ATE 24011002771 (pre-facelift model) 1KD 253x10mm ATE 24011004201 (facelift model) 1KS 272x10mm ATE 24011003561 1KT 272x10mm ATE 24011003561 1KW 310x22mm ATE 24012202191 Jurid 340x30mm front brake disc 1LG https://www.autodoc.co.uk/jurid/13793869#brake-disc Jurid 272x10mm rear brake disc 1KT https://www.autodoc.co.uk/jurid/7863996#brake-disc
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Estate rear spring replacement heavy duty.
As you can see in the chart below, there are nine different rear springs listed in the Skoda parts catalogue for the Octavia MK4 with 0N1, 1JA build codes. According to the gknautomotive.com online spring catalogue, the Octavia MK4 estate 2.0TDI front wheel drive with standard ride height has rear springs with OEM part number 5Q0511121AG, ie. it's the middle one in the list below. By comparison, gknautomotive.com lists the hatchback version of this as having rear springs with OEM part number 5Q0511121AF, ie. one lower in the hierarchy compared to the estate version. This is normal, because the estate version is expected to carry slightly more weight in the luggage area than the hatchback version. As you go up in the hierarchy of these springs from 5Q0511121AC to 5Q0511121FC they tend to become longer and/or stiffer. It would be a simple job to change these rear springs to one or two up in the hierarchy, ie. 5Q0511121AH or 5Q0511121AJ. Rear coil springs for Octavia MK4 (0N1 = standard rear axle, ie. not multi-link rear suspension) (1JA = standard ride height) 5Q0511121AC Rear coil spring 1JA+0YD 5Q0511121AD Rear coil spring 1JA+0YE 5Q0511121AE Rear coil spring 1JA+0YF 5Q0511121AF Rear coil spring 1JA+0YG 5Q0511121AG Rear coil spring 1JA+0YH 5Q0511121AH Rear coil spring 1JA+0YJ 5Q0511121AJ Rear coil spring 1JA+0YK 5Q0511121EN Rear coil spring 1JA+0YL 5Q0511121FC Rear coil spring 1JA+0YM https://www.lllparts.co.uk/catalogs/skoda/CZ/OCT/585/5/511/511000 Kilen 63140 rear spring (sold to replace 5Q0511121AG and one other spring, so might not be an exact match) https://www.autodoc.co.uk/kilen/10065071 Kilen 63144 rear spring (sold to replace 5Q0511121AH and one other spring, so might not be an exact match) https://www.autodoc.co.uk/kilen/12865385#coil-spring Kilen 65108 rear spring (sold to replace 5Q0511121AJ and two other springs, so might not be an exact match) https://www.autodoc.co.uk/kilen/10080538
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Does the 1.5 TSI Have Rear Disc Brakes?
That's an excellent tip. Amazon also has some underhand tactics. If you want one of their seemingly bargain prices, don't add it to your basket or the price will soon mysteriously increase. If you want time to think, just search for the item again when you're ready to purchase and it's more likely to still be at that bargain price. Perhaps like aliexpress, clearing the cookies and logging in using someone else's account would also bring back that bargain price.
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Battery question
After 8 hours of sitting my car battery reads about 12.3V measured at the cigarette lighter socket with the ignition turned on but the engine not running (and not having been run for eight hours). In the winter when the temperature is very low this measurement can drop to about 12.1V. Below 12.0V sounds slightly low and I suspect the battery is in need of replacement. From reading other posts, I suspect it might be common for factory fit EFB batteries to need replacing after about 4 years, ie. they don't have a long life. If Skoda had fitted an AGM battery in the factory I expect this would have been a lot longer. I've just measured the voltage of my AGM battery (with an accurate multimeter) at the cigarette lighter socket with the ignition on. The car has been sitting for over 8 hours and with the interior light off the voltage is 12.44V and with the interior light on the voltage is 12.41V. When the interior light is turned off again, the voltage quickly returns to 12.44V. The temperature is about 20 degrees Centigrade, so the battery voltage is slightly higher than it would be if I had measured it in the winter at about 0 degrees Centigrade. This shows that your battery at 11.9V is highly suspect because this kind of voltage shows an almost flat battery or one that needs replacing urgently. The difference between an 11.9V battery and a 12.4V battery is night and day, ie. one has very little power left and one has loads of power left. To demonstrate how even a small load on the battery causes the voltage to drop, I disconnected the battery, ie. removed the negative terminal. The voltage immediately increased to 12.64V and continued to quickly rise, soon reaching 12.69V, ie. almost 12.7V. This means that the measured Voltage is almost 0.3V higher with the battery disconnected compared to the battery connected with the ignition on and the interior light on. A 12.7V battery when measured with it disconnected, ie. no load on the battery, is probably about 90% fully charged. A car's electrical system probably never fully charges a car battery because to do that requires a very small trickle charge, perhaps around 0.2A. If a car's electrical system tried to fully charge a battery, ie. to 100% of its capacity, it would probably damage one or more of its six cells.
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Battery question
The first thing I would do is fit a new battery and bench test the old battery to see if it's worth keeping and using as a stand-by spare batttery by fully charging it and seeing how long it takes the voltage to drop to various voltage points, such as 12.8V, 12.7V,. etc. My current new Varta SLA (Sealed Lead Acid) battery takes almost one week to drop to 12.8V after being fully charged, and almost eight weeks to drop to 12.7V. By fully charging the battery once it had dropped to 12.7V I was able to calculate that in those 8 weeks the battery had lost just over 10% of its capacity, ie. this is the amount of self-discharge...and is surprisingly low as I had expected a much higher rate of self-discharge from a SLA battery. As it's a stop-start car I would use the superior AGM battery rather than the cheaper, lower quality EFB battery that I've heard Skoda fit to new stop-start cars in the factory. Bear in mind, that most people probably don't fully charge their 12V car batteries because to fully charge them you need a trickle charger (perhaps only 0.2A) that only cuts out when the charging voltage gets to about 14.95V...which can take many days to do. It's OK to have a car battery charger that initially charges at a higher rate such as 3.5A, but then switches over to the trickle charge rate when the charging voltage gets to a certain point.