Carlston

VAG do a huge number of tyre pressure charts with a huge range of tyre pressures, often changing inexplicably from one version of a chart to the next updated version of the chart. It probably depends which young apprentice they've given the job to, as to what tyre pressures make it onto the white label that they stick under the fuel filler flap. None of the recommended tyre pressures that VAG give on their white labels are likely to be underinflated, but many will be overinflated...especially when they group tyres with different load indexes together such as 225/35R19 and 225/40R18 which are four different load indexes apart, ie. 88SL/92XL versus 84SL/88XL. Notice in the VW Golf tyre pressure chart above, that 225/40R18 is incorrectly shown as having a load index of 82. It's either 88 for the standard load index or 92 for the extra load index, with the 225/40R18 tyre size. 225/40R18 can support a 12% heavier load than 225/35R19 when inflated to the same tyre pressure, yet in the chart above they've inexplicably grouped them together. However, VAG won't always be recommending tyre pressures just on load carrying capacity but on handling characteristics. For example, many drivers will have added 3psi to their front tyre pressures at some point from what the manufacturer recommends simply to sharpen up the front steering/handling. Load indexes 84 (500kg) 88 (560kg) 92 (630kg) By giving a range of tyre pressures according to load, it leaves it up to the driver to decide what they want to go with that day. It's always best to overinflate rather than underinflate. So if you had a multidrop delivery job and loaded the car up fully at the start of the day and emptied it completely by the end of the day, you would probably want to go with the tyre pressures recommended by the manufacturer for a fully loaded car. Many firms that use lots of vans such as Royal Mail will inflate for the maximum gross weight of the vehicle, even though most of the time they will be lightly loaded. This doesn't help driver comfort, who most of the time will be driving around with tyres that are pumped up far too hard for the load. The same applies to buses. If the bus is half empty, the bus' tyres will be far too hard for the load resulting in a harder ride for the passengers.

235/35R19 are oversize tyres compared to the standard 225/35R19 tyre size. Therefore Skoda don't list tyre pressures for the 235/35R19 tyre size. However, comparing the load indexes of the standard tyre sizes with the load index of the oversize 235/35R19 tyre size you can estimate suitable tyre pressures. Out of the four 205/50R17, 225/45R17, 225/40R18, and 225/35R19 tyre sizes, 225/40R18 has the closest load index to the oversize 235/35R19. Estimated tyre pressures for the oversize 235/35R19 tyre size with the car half loaded 2.4Bar (35psi) front tyres 2.4Bar (35psi) rear tyres However, I would probably try somewhere between 2.4Bar (35psi) front and 2.2Bar (32psi) rear for a less than half loaded car with very little weight in the back and 2.6Bar (38psi) front and 2.8Bar (41psi) rear for a car loaded somewhere between half and full.

KYB RH3941 is sold to replace just 1K0411105DB and no other OEM part numbers, so should be an exact match. Kilen 23117 is sold to replace 1K0411105DB, 1K0411105EB, 1K0411105EC, and 1K0411105JB, so may not be an exact match to 1K0411105DB. KYB RH3941 is available on ebay from carpartsinmotion for £25.05 each https://www.ebay.co.uk/itm/234790785317 1K0411105DB https://www.autodoc.co.uk/spares-search?keyword=1K0411105DB&supplier[0]=246&supplier[1]=85

Seems a bit extreme. Compared to 7.5Jx19 ET48, the edge of each rim will be moved out by 0.5" (12.7mm) + 10mm = 22.7mm Moving each rim 22.7mm outwards, means the edges of the rims are spaced 45.4mm further apart which is almost 2". It might be easy to badly kerb the rims when going through 6ft 6in (2 metre) width restrictions. Fitting 225/35R20 to 8.5J rims stretches the sidewalls (see ETRTO chart below), making the ride harder and giving little to no protection to the rims from kerbing damage. 225/35R20 fitted to 8Jx20 ET41 rims from the Kodiaq would be less extreme. Fitting Skoda rims, means that should you damage one and need a replacement, finding a replacement should be a lot easier than trying to source a single replacement aftermarket rim. All Skoda rims have unique identifying numbers, ie. the OEM part number, making it easy to find a replacement should the need arise. With the 8Jx20 Kodiaq rim, you could also consider 235/35R20. However, when you're pushing the limits in clearance, it would be prudent to just purchase two tyres first. That way you could try them on the front of the car and then the back of the car. If rubbing occurred on the front, 235/35R20 could be used on the rear with the slightly narrower 225/35R20 used on the front. XTREME 8Jx20 ET41 5/112 57.1 alloy rim (from Kodiaq) https://eshop.skoda-auto.cz/cs_CZ/kolo-z-lehke-slitiny-xtreme-20-pro-kodiaq/p/565071490E+QXJ ETRTO approved rim widths for passenger car tyres 225/35 7.5-8.0-9.0 235/35 8.0-8.5-9.5

On the Octavia MK3, the 205/50R17 tyre size is to allow for snow chains to be fitted on the front wheels as 225/45R17 doesn't provide enough clearance. Full information is shown in the owner's manual.

Only if someone has fitted oversize tyres. As you can see below, the Octavia MK4 uses approximately 1" bigger outside diameter tyres. Currently, the Octavia MK4 tyre sizes are quite a bit more expensive than Octavia MK3 tyre sizes, as the tyre sizes Skoda has chosen are not as common, although that could change in the future if more and more cars start using these 1" bigger outside diameter tyres. Notice that unlike the Octavia MK3, the Octavia MK4 doesn't use 15" tyres. Octavia MK3 tyre sizes 195/65R15 205/55R16 205/50R17 winter tyre size 225/45R17 225/40R18 225/35R19 Octavia MK4 tyre sizes 205/60R16 205/55R17 225/45R18 225/40R19

It's no surprise that an Octavia MK4 on 225/40R19 will be more comfortable than an Octavia MK3 on 225/40R18. For one thing, 225/40R19 is a more comfortable tyre size than 225/40R18. There's not much in it comfort wise between these two tyre sizes, but factor in that Skoda will have tuned the Octavia MK4's suspension to be more comfortable than the Octavia MK3's suspension. So the 19's are taking nothing away from the comfort compared to the 18's, but the improved/softened suspension wins the day.

This 6Jx15 alloy rim (from the Fabia MK3) only weighs about 8.3kg, so it's a lot lighter than alternative 16" and 17" rims. For an oversize tyre, 195/60R15 would probably be my choice on this size rim fitted to the Fabia MK2. 195/60R15 is a common and cheap tyre size. Out of the below five tyre sizes, only 185/65R15 is cheaper but there's not much saving over 195/60R15. The 15" rim, would also be better at keeping the car a "sleeper" than bigger 16" and 17" rims. Plus because of the higher sidewalls, you get a much better ride. With the lighter wheels the car will also accelerate faster. 15" tyres, also tend to be much cheaper than 16" and 17" equivalents. Some possible tyre sizes for the 6Jx15 ET38 5/100 57.1 rim 185/60R15 185/65R15 195/55R15 195/60R15 205/55R15 https://eshop.skoda-auto.cz/cs_CZ/kolo-z-lehke-slitiny-mato-15-pro-rapid-fabia-iii/p/6V0071495++8Z8

Vredestein are often cheaper than Hankook all-season tyres, but 185/55R15 is an expensive size. Some Monte Carlos run on 14" tyres, because that's what the owner has changed them to. Citigos that left the factory with tyres bigger than 14" were fitted with stiffer front and rear springs, hence some owners find that the combination of the low profile tyres and the stiffer springs makes the ride too hard. As you can see in the charts below, the stiffer springs use a 0.25mm thicker wire diameter. Standard ride height soft springs (for Citigos that left the factory with 14" wheels) Front wire diameter 11.00mm Rear wire diameter 9.25mm Standard ride height hard springs (for Citigos that left the factory with 15"/16" wheels) Front wire diameter 11.25mm Rear wire diameter 9.5mm Surprisingly, Citigos that left the factory with lowered/sports suspension had shortened soft springs, rather than shortened hard springs. Compared to the standard ride height soft springs, lowered/sports front springs are 20mm shorter and lowered/sports rear springs are 15mm shorter.

You don't say if you're wheels are 14"/15"/16", etc., but if you have 14" then Vredestein Quatrac 5 are still available. The 15" and 16" have now gone over to the Vredestein Quatrac 6 (actually just Vredestein Quatrac without a number) but some sellers use the 6 to show that's it's a newer version. Unfortunately, the latest Quatrac is now a directional tyre, so a spare wheel for example, can only be correctly fitted to the left or right side of the car, depending which way the tyre has been fitted to the rim. The Vredestein Quatrac 5 will last much longer than the Hankook all-season tyres. Possibly around 40,000 miles. The Vredestein Quatracs are also one of the best performing all-season tyres in cold rain, ie. between 0 degrees Centigrade and 9 degrees Centigrade...outperforming even the Michelin CrossClimates in cold rain/wet road conditions. The 165/70R14 and 175/65R14 are standard tyre sizes on the Citigo, but 185/65R14 will also fit the 5Jx14 ET35 rims. Compared to the two standard 14" sizes, 185/65R14 not only gives more grip but a more comfortable ride. 185/65R14 has about the same outside diameter as a 185/50R16 tyre, which is another standard tyre size on the Citigo...so no problems with the speedometer reading. Vredestein Quatrac 5 165/70R14 81T (£48.35 each plus shipping...at time of writing) https://www.camskill.co.uk/m137b0s7974p134029/Vredestein_Tyres_All_Season_Car_Vredestein_Quatrac5_Vredestein_Quatrac_5_-_165_70_R14_81T_TL_Fuel_Eff_%3A_D_Wet_Grip%3A_C_NoiseClass%3A_B_Noise%3A_69dB Vredestein Quatrac 5 175/65R14 82T (£45.30 each plus shipping...at time of writing) https://www.camskill.co.uk/m137b0s7975p134030/Vredestein_Tyres_All_Season_Car_Vredestein_Quatrac5_Vredestein_Quatrac_5_-_175_65_R14_82T_TL_Fuel_Eff_%3A_D_Wet_Grip%3A_C_NoiseClass%3A_B_Noise%3A_69dB Vredestein Quatrac 5 185/65R14 86T (£57.50 each plus shipping...at time of writing) https://www.camskill.co.uk/m137b0s7980p144832/Vredestein_Tyres_All_Season_Car_Vredestein_Quatrac5_Vredestein_Quatrac_5_-_185_65_R14_86T_TL_Fuel_Eff_%3A_D_Wet_Grip%3A_C_NoiseClass%3A_B_Noise%3A_69dB Blackcircles are also listing these three tyres, although at a slightly higher cost.

ATE, TRW, Bosch and many other top brands are 288x25mm, so I prefer the 310/312 example.

I answered about the Fabia MK1 VRS. I mentioned the Octavia MK1 VRS because that also has a new and improved disc where 1mm was skimmed off from the radius, to presumably prevent a lip forming when the discs wear down. It's to help the OP and others see the bigger picture. It would be all too easy to incorrectly see the 2mm bigger outside diameter discs as superior to the smaller discs. However, the contact area of the smaller discs will be identical to the contact area of the bigger discs, ie. 230x9mm will be the same contact area as 232x9mm, and 310x25mm will be the same contact area as 312x25mm. To underline that fact that the smaller discs are better, ATE only sell the smaller 230x9mm and 310x25mm discs. ATE are possibly the best brake discs you can get. Notice that ATE's grooved discs look far more technologically advanced than Brembo's equivalent. ATE PowerDisc 230x9mm 5/100 rear brake discs Brembo Max Line 230x9mm 5/100 rear brake discs

Some of the top brands such as ATE list the rear discs as 230x9mm, although it's shown as 232x9mm in the Skoda parts catalogue. Some other brands such as Bosch list the rear discs as 232x9mm. I would go with 230x9mm as that is probably the latest version. Perhaps they have skimmed 1mm off from the radius of the 232x9mm rear discs so that a lip doesn't form, which would make changing worn brake pads easier...and maybe less likely to cause brake vibration/noise, etc. The best version of the 312x25mm 5/100 front discs is 310x25mm 5/100, so a similar thing has happened with those discs. ATE don't even sell 312x25mm 5/100 front discs, although they probably did before they introduced the new and improved 310x25mm 5/100 version. They are still shown in the Skoda parts catalogue as 312x25mm. In the link below, ATE shows the 312x25mm front brake discs on the Octavia MK1 VRS as 310x25mm, whereas Bosch shows them as 312x25mm. However, the minimum thickness of these ATE discs is 22mm, whereas the minimum thickness of these Bosch discs is 23mm. Therefore, you get 3mm of disc wear on these ATE discs before they need replacing, but only 2mm of disc wear on these Bosch discs before they need replacing. Hence these 310x25mm discs should last 50% longer than these 312x25mm discs, and are therefore 50% better as far as wear goes. Octavia MK1 VRS front brake discs 312x25mm 5/100 8N0615301A https://www.autodoc.co.uk/car-parts/oem/8n0615301a?search=OEN 8N0615301A&supplier[0]=3&supplier[1]=30

Fabia MK2 diesel engines Engine designation Production Engine code (family) Displacement, configuration, valvetrain, fuel system, aspiration Motive power at rpm max. torque at rpm Gearbox (type), drive Top speed 0–100 km/h [s] (0–62 mph) Combined consumption [l/100 km / mpg imp / mpg US] CO2 [g/km] 1.2 TDI CR 55 kW 2010–2014 (EA189) 1199 ccm, I3, 12V, DOHC, common-rail, turbocharged 55 kW (75 PS; 74 hp) at 4200 rpm 180 Nm. (133 lb•ft) at 2000 rpm 5-speed manual (MQ250), FWD 166 km/h (103 mph) 14.2 3,8 / 74.3 / 61.9 99 1.2 TDI CR GreenLine 55 kW 2010–2014 (EA189) 1199 ccm, I3, 12V, DOHC, common-rail, turbocharged 55 kW (75 PS; 74 hp) at 4200 rpm 180 Nm. (133 lb•ft) at 2000 rpm 5-speed manual (MQ250), FWD 172 km/h (107 mph) 14.2 3.4 / 83.1 / 69.2 88 1.4 TDI PD 51 kW 2007–2010 BNM (EA188) 1422 ccm, I3, 6V, SOHC, Pumpe-Düse, turbocharged 51 kW (70 PS; 68 hp) at 4000 rpm 155 Nm. (114 lb•ft) at 1600–2800 rpm 5-speed manual (MQ250), FWD 163 km/h (101 mph) 14.8 4.8 / 58.9 / 49.0 127 1.4 TDI PD 59 kW 2007–2010 BNV (EA188) 1422 ccm, I3, 6V, SOHC, Pumpe-Düse, turbocharged 59 kW (80 PS; 79 hp) at 4000 rpm 195 Nm. (144 lb•ft) at 2200 rpm 5-speed manual (MQ250), FWD 172 km/h (107 mph) 13.2 4.6 / 61.4 / 51.1 120 1.4 TDI DPF GreenLine 59 kW 2008–2010 BNV (EA188) 1442 ccm, I3, 6V, SOHC, Pumpe-Düse, turbocharged 59 kW (80 PS; 79 hp) at 4000 rpm 195 Nm. (144 lb•ft) at 2200 rpm 5-speed manual (MQ250), FWD 170 km/h (106 mph) 13.2 4.1 / 68.9 / 57.4 109 1.6 TDI CR DPF 55 kW 2010–2014 CAYA (EA189) 1598 ccm, I4, 16V, DOHC, common-rail, turbocharged 55 kW (75 PS; 74 hp) at 4000 rpm 195 Nm. (144 lb•ft) at 1500–2000 rpm 5-speed manual (MQ250), FWD 166 km/h (103 mph) 14.1 4.2 / 67.3 / 56.0 109 1.6 TDI CR DPF 66 kW 2010–2014 CAYB (EA189) 1598 ccm, I4, 16V, DOHC, common-rail, turbocharged 66 kW (90 PS; 89 hp) at 4200 rpm 230 Nm. (170 lb•ft) at 1500–2500 rpm 5-speed manual (MQ250), FWD 176 km/h (109 mph) 12.6 4.2 / 67.3 / 56.0 109 1.6 TDI CR DPF 77 kW 2010–2014 CAYC (EA189) 1598 ccm, I4, 16V, DOHC, common-rail, turbocharged 77 kW (105 PS; 103 hp) at 4400 rpm 250 Nm. (184 lb•ft) at 1500–2500 rpm 5-speed manual (MQ250), FWD 188 km/h (117 mph) 10.9 4.2 / 67.3 / 56.0 109 1.9 TDI PD 77 kW 2007–2010 BSW (EA188) 1896 ccm, I4, 8V SOHC, Pumpe-Düse, turbocharged 77 kW (105 PS; 103 hp) at 4000 rpm 240 Nm. (177 lb•ft) at 1900 rpm 5-speed manual (MQ250), FWD 190 km/h (118 mph) 10.8 5.0 / 56.5 / 47.0 130 https://en.wikipedia.org/wiki/Škoda_Fabia

If you're using 32psi on your full size tyres, then 3.5Bar (51psi) should be ok with the 135/80R18 tyre size. If you have forgotten to top up the air pressure each year, you could probably get home at 50mph even at 32psi, but that might risk damaging the sidewalls and rim if you hit a pothole, so the closer to 51psi or more the better. However, both the 125/70R18 and 135/80R18 space saver tyres have a maximum inflation pressure of 4.2Bar (60psi) so it makes sense to inflate them to that pressure when storing them in the boot. Do check the sidewall markings on your space saver tyre to make sure that you are aware of the maximum inflation pressure, and never exceed that value or a life threatening explosion of the tyre could occur. All tyres gradually lose pressure over time, even if they don't have a slow puncture. It's a bit like when children have a birthday party and blow up some balloons. The next day many are looking rather deflated. What has happened, is that the air molecules have escaped through the thin rubber. This effect also happens with tyres, but at a much slower pace due to the much thicker rubber. My tyres lose about 3psi every 6 months, and this is normal, ie. if you inflate your tyres to 32psi and check them 6 months later, you might find that they are now only about 29psi. The air lose has nothing to do with how many miles you do, as that won't change how quickly the air is escaping through the rubber. The actual width of a 125/70R18 tyre fitted to a 3.5J rim will be about 124mm. The actual width of a 135/80R18 tyre fitted to a 3.5J rim will be about 131mm. You might think of a 135 tyre as being 10mm wider than a 125 tyre, but the actual difference depends on the rim width that both tyres are fitted to. The actual width of an inflated tyre is measured from the outside of one sidewall to the outside of the other sidewall, measured at the widest point. So if you had a big rectangular shaped letterbox that had a height of 131mm, you would be able to post your 131mm wide 135/80R18 tyre through the letterbox...assuming the width of the letterbox was at least as wide as the outside diameter of the tyre.

16" rims won't clear the front brake caliper on 340x30mm front brake discs. The Octavia MK3 2.0TDI VRS pre-facelift and Octavia MK3 2.0TSI VRS pre-facelift used 340x30mm front brake discs and 272x10mm solid rear brake discs. The Octavia MK3 2.0TDI VRS facelift used 312x25mm front brake discs and 272x10mm solid rear brake discs. The Octavia Mk3 2.0TSI VRS facelift used 340x30mm front brake discs and 310x22mm ventilated rear brake discs. So if you had a 16" spare wheel, such as 205/55R16 fitted to a 6.5Jx16 ET46 rim, you could always fit this spare wheel to the rear wheels, as those rear brake discs are never bigger than 310x22mm. Interestingly, if you had a VRS with the 272x10mm solid rear brake discs, you could even fit a 15" spare wheel such as 195/65R15 fitted to a 6Jx15 ET43 rim, to the rear of the car.

Karoq 4x4 uses a 225/45R19 tyre with its 19" rim. You were probably using a 125/70R18 space saver, which has a much smaller outside diameter...7.7% smaller in fact. A 135/80R18 space saver is much closer to the outside diameter of the standard tyre sizes that are used on the Karoq 4x4. Outside diameter of tyres 225/45R19 685.1mm 125/70R18 632.2mm (-7.7%) 135/80R18 673.2mm (-1.7%) The 135/80R18 space saver tyre would fit the same 3.5Jx18 ET25.5 5/112 57.1 steel rim that the 125/70R18 uses. 125/70R18 space saver tyres shown on camskill https://www.camskill.co.uk/m129b0s5432p0/Temporary_Spare_Tyres_-_Space_Saver_Tyres_-_18_inch_R18_inch_-_125_70_18_125_70R18 135/80R18 space saver tyres shown on camskill https://www.camskill.co.uk/m129b0s7672p0/Temporary_Spare_Tyres_-_Space_Saver_Tyres_-_18_inch_R18_inch_-_135_80_18_135_80R18_R18_inch_-_135_18_135R18 3.5Jx18 ET25.5 1K0601027AP 1 1K0601027AP Steel rim for space-saving emergency wheel 3.5Jx18 ET25.5 1K0601027AP03C rally black 3.5Jx18 ET25.5 5Q0601027BC 1 5Q0601027BC Steel rim for space-saving emergency wheel 3.5Jx18 ET25.5 5Q0601027BC03C rally black The outside diameter of 125/70R18 is similar to Octavia MK1/MK2/MK3 sized tyres. However, Skoda have also been selling this size for cars that use bigger outside diameter tyres such as the Karoq and Superb MK3. For the Kodiaq, Skoda sell an even bigger outside diameter 145/85R18 space saver tyre. However, the outside diameter of the 145/85R18 is too big for the Karoq. 145/85R18 space saver tyre for the Kodiaq https://www.camskill.co.uk/m129b0s9254p0/Temporary_Spare_Tyres_-_Space_Saver_Tyres_-_18_inch_R18_inch_-_145_85_18_145_85R18

Previous thread on spare wheel options for the Karoq

I never do a front wheel alignment check (front toe-in/toe-out check) when I change my front shock absorbers and springs, as it doesn't alter the front toe-in/toe-out setting...and my front tyres have never worn unevenly as a result.

If the Octavia MK3 VRS needed 18" (which it doesn't because 17" rims clear even the biggest 340x30mm front brake discs), then the car couldn't be used where snow chains are required as Skoda don't approve snow chains on the Octavia MK3 for any tyre and rim combinations larger than 17". Anyhow, page 282 in the July 2019 edition of the Octavia MK3 owner's manual specifically states that snow chains with links and locks no larger than 12mm can be used with 205/50R17 tyres fitted to either ET45 or ET48 rims, and that snow chains can only be used on the front wheels. It should be easily possible to change the 340x30mm front discs to 314x30mm from the Kodiaq. They are very similar, and all you would need are new brake caliper carriers and new discs. The brake calipers and brake pads are the same. The braking power of 314x30mm won't be far off 340x30mm, but considerably more than the 312x25mm. 314x30mm front discs enable 16" wheels to be used, such as 205/55R16. Could be an ideal solution where snow chains are required as 205/55R16 tyres and suitable rims are cheap in these sizes. Left brake caliper carrier for TRW 314x30mm front discs 7N0615125 https://www.autodoc.co.uk/trw/2183223 Right brake caliper carrier for TRW 314x30mm front discs 7N0615126 https://www.autodoc.co.uk/trw/2183224 Front brake discs 314x30mm 5/112 1K0615301AJ https://www.autodoc.co.uk/ate/7005983 Skoda parts catalogue showing Kodiaq 314x30mm front brakes https://www.lllparts.co.uk/catalogs/skoda/CZ/KODR/434/6/615/615010 If you have front discs smaller than 340x30mm, you could use snow chains with links and locks no larger than 12mm, with 205/55R16 tyres fitted to either 6Jx16 ET48 rims or 6Jx16 ET50 rims. These tyre and rim combinations are specifically stated in the Octavia MK3 July 2019 owner's manual on page 282.

The Octavia MK3 owner's manual shows that snow chains can be used with 205/50R17 tyres fitted to either 6Jx17 ET45 or 6Jx17 ET48 rims on the Octavia MK3 RS. So 17" wheels are specifically mentioned for the RS in the owner's manual. This information is shown on page 282 of the July 2019 owner's manual. The snow chains mustn't have links and locks larger than 12mm. Snow chains can only be fitted to the front wheels. https://manual.skoda-auto.com/210/en-GB/Detail?model=Octavia_5E&edition=07-2019&market=&manualLang=en Maybe consider using 205/50R17 winter tyres without snow chains, perhaps fitted to 6.5Jx17 ET38 5/112 57.1 steel rims (or alloys) from the Kodiaq.

I mentioned 225/50R18 because that would be for the 18" Kodiaq rims (if you've purchased a set or are going to purchase a set), ie. remove the 235/55R18 Kodiaq tyres from the 18" Kodiaq rims and fit new 225/50R18 tyres...leaving you to sell the 235/55R18 tyres.

235/55R18 are too big for the Karoq 4x4, because compared to 225/50R18 it raises the gearing by about 4.9%. However, you could use the 7Jx18 ET43 Kodiaq rims instead of the 7Jx18 ET45 Karoq rims, and change to 225/50R18 which is the correct tyre size for the Karoq 4x4. The ET43 offset will push the centre of the tyre 2mm further out in the wheelarch compared to the standard ET45 offset. So that's only a very small difference. Your 8Jx19 ET45 Karoq rims with 225/45R19 tyres could be sold to a Karoq 4x4 owner, or a Karoq 2WD owner is they don't mind the higher sidewall height and higher gearing. 225/45R19 raises the gearing by about 3.4% compared to 225/40R19, and increases the radius of the tyre by 11.25mm.

Sachs don't appear to make any springs that match OEM part number 1J0411105AJ However, Kilen 23113 do match 1J0411105AJ

You can find the OEM part numbers for the springs from the car's build codes. Build codes have three characters such as G85 L13, etc. The car might have around 180 build codes, so there are a lot of them. Once you get them all, you can input them into "VW codes decoder" to find out what they all mean. VW codes decoder http://igorweb.org/equidec.aspx There's an ebay seller than can supply your build codes for about 3 Euros. Search "skoda vin decoder" on ebay to find the listing. Alternatively, you can go on "skoda erwin" where you can download not only the build codes but manuals, etc. One hour's access is 7 Euros. You might have some of your build codes on a white label in the spare wheel well under the carpet, but there might only be around 40 of them. Example of white build code label