Carlston

BoxerBoy uses 215/65R17 winter tyres on his Kodiaq. 6.5Jx17 ET38 5/112 57.1 steel rim https://www.oponeo.co.uk/steel-wheel/vw-w9021#23183793 https://www.mytyres.co.uk/rims/details?vehicleId=672860434273997936&rimCode=ALCAR9021

There are many threads about the hard ride that you get if you use 225/40R18 tyres on the Superb MK2. I can see the appeal of this tyre size for an Octavia VRS owner, but on the Superb MK2 205/55R16 or 225/45R17 makes a lot more sense. To make a 205/55R16 ride as hard as a 225/40R18, you would probably have to over-inflate the 205/55R16 by about 10psi. Considering that it's easy to notice a 3psi difference in tyre pressure, a 10psi difference is massive. Hence changing from a 225/40R18 to a 205/55R16 will transform the ride. However, if changing to the 205/55R16 size on the Superb MK2, I would suggest using 6Jx16 ET43 rims (from the Karoq) rather than the standard 7Jx16 ET45 rims. This is because 205/55R16 fitted to a narrower 6J rim rides noticeably softer than when fitted to a wider 7J rim. As well as the standard 7Jx16 ET45 rim, the Superb MK2 does have a 6Jx16 ET50 winter rim option that's suitable for use with snowchains. However, if you're not going to use snowchains, 6Jx16 ET43 rims (from the Karoq) might be a better option, as 205/55R16 fitted to a 6Jx16 ET50 rim is a little sunken in the wheelarch and reduces the front and rear tracks by 10mm compared to using the standard ET45 rims.

I agree with your comments, but just to add... The Kodiaq's 235/50R19 is a far more comfortable tyre size than the Karoq's 225/40R19. The easiest way to understand this is to compare the sidewall heights. The 235/50R19 sidewall height is about 30% more than the 225/40R19 sidewall height, and a 30% increase in sidewall height is a lot...especially when the 225/40R19 sidewall height is only about 3.5" (90mm). By comparison, the 235/50R19 sidewall height is over 4.5" (117.5mm). 235/55R18 has a sidewall height of about 5" (129.25mm), and 215/65R17 has a sidewall height of about 5.5" (139.75mm). Out of the standard Karoq 2WD tyre sizes, the 215/55R17 would provide similar ride comfort to the Kodiaq's 235/50R19 tyre size. There's less than 1% difference between these two sidewall heights.

As you can see in the below chart, the outside diameter of the standard Karoq 2WD tyres are all closely spaced. 215/50R18 has the biggest outside diameter and the outside diameter of that tyre size is only 1.4% bigger than the outside diameter of the 225/40R19 which has the smallest outside diameter. Outside diameter of Karoq 2WD tyres 215/60R16 664.4mm 215/55R17 668.3mm 215/50R18 672.2mm (+1.4% bigger outside diameter than 225/40R19) 225/40R19 662.6mm 235/40R19 670.6mm A much bigger outside diameter tyre will adversely affect the car's gearing. For example, the car might not pull away so easily in 1st gear, especially up a steep hill and with a full load on board...perhaps even towing a heavy caravan. Increasing the gearing too much, can also cause problems with the engine perhaps struggling to pull the now much higher top gear. Fitting a much bigger outside diameter tyre than standard can cause rubbing. Fitting a much bigger outside diameter tyre can cause the speedometer to under-read, which is illegal. For example, if your car's speedometer was showing 50mph but your actual speed was 51mph, then that is an example of under-reading.

245/40R19 seem quite a popular change from the standard 235/40R19. 245/40R19 are a cheaper size, offer a little more rim protection from pothole damage and kerbing damage, and should be a little more comfortable. If people are using the standard 235/40R19 with 15mm spacers without rubbing, you shouldn't have any rubbing with 245/40R19 on those 8Jx19 ET35 rims. 245/40R19 is even listed as a Skoda approved alternative to 235/40R19 on the Karoq 4WD, as it's shown in Skoda's alloy wheel catalogue. Skoda alloy wheel catalogue https://www.skoda.co.uk/_doc/639a0118-4da5-446b-a786-86e1f789b57b

It does appear ECP are out of stock, although elsewhere such as amazon are often cheaper.

The ATE front brake pads are currently available on autodoc and elsewhere such as amazon, ebay, etc. ATE 13.0460-7111.2 (without wear indicator) https://www.autodoc.co.uk/ate/956196 ATE 13.0460-7117.2 (with wear indicator) https://www.autodoc.co.uk/ate/956202 https://www.amazon.co.uk/ATE-13046071172-Disc-Brake-Shoe/dp/B0038N2JLO/ref=sr_1_1?crid=2OUZG795SRJIR&keywords=ATE+13046071172&qid=1683293226&sprefix=ate+13046071172%2Caps%2C68&sr=8-1

The Meyle 1266230019 are available for just over £80 for two. However, I would check with the seller to make sure the piston rod diameter is 25mm and not 22mm. Amazon were doing the Sachs 315911 for about £60 each, but they've sold out. I would guess genuine Skoda shock absorbers will be well over £150 for two, but it might be worth checking. Unlike the Bilstein B4 22-230539, at least the Meyle 1266230019 AND Sachs 315911 list the 5Q0413031FP against them. Meyle 1266230019 https://www.autodoc.co.uk/meyle/15260719 https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=MEYLE+126+623+0019&_sacat=0&_sop=15 Sachs 315911 https://www.autodoc.co.uk/sachs/7885629 https://www.amazon.co.uk/Sachs-315911-315-911-Absorbers/dp/B01E4JF3MW/ref=sr_1_1?crid=1PTKENU0GNE36&keywords=SACHS+315911&qid=1683292420&sprefix=sachs+315911%2Caps%2C393&sr=8-1

I expect the Bilstein B4 22-230539 will fit and do the job, but I doubt it's been optimised for the Octavia MK3's sports suspension. Probably a one size fits all approach. Various searches on autodoc, revels that the Bilstein B4 22-230539 is also suggested for the 1.0 litre, 1.2 litre, and 1.4 litre petrol turbo engines with standard ride height suspension. Now the front springs of these much lighter engined vehicles are going to be both longer and softer than the 2.0 litre petrol turbo VRS with sports suspension. Which confirms my suspicions that the Bilstein B4 22-230539 is unlikely to be an optimised solution for the VRS suspension.

5Q0411105HC L16 Front coil spring 5Q0413031FP G07 Front shock absorber 54.6mm (ie. 55mm strut diameter) On autodoc, there aren't any Bilstein front shock absorbers listed against 5Q0413031FP. Bilstein are showing G07 against their 50mm strut diameter Bilstein B6 and Bilstein B8 front shock absorbers. That is clearly incorrect, because G07 front shock absorbers have a 55mm strut diameter.

Typo, now corrected. Yeti 1.6TDI approved tyre and rim options 205/55R16 6Jx16 ET50 205/55R16 7Jx16 ET45 205/50R17 7Jx17 ET45

In one of the Yeti owner's manual, it says that the Yeti 1.6TDI has the following approved tyre and rim options: Yeti 1.6TDI approved tyre and rim options 205/55R16 6Jx16 ET50 205/55R16 7Jx16 ET45 205/50R17 7Jx16 ET45 Now all these combinations are also approved for snow chains on both the front and rear axles. So you can use snow chains on all four wheels at the same time. It also says only fit snow chains with links and locks not larger than 12mm. The Yeti owner's manual that I checked came out in 2014, and there could be differences in other manuals that came out on a different date. So it appears that 215/60R16 are not approved for the Yeti 1.6TDI. 215/60R16 has an outside diameter 5.1% bigger than 205/55R16, so your speedometer might be under-reading. You can check by comparing the speedometer reading with the GPS speedometer reading on google maps. Fitting a 205/55R16 tyre to a relatively wide 7" rim makes the ride harder compared to fitting a 205/55R16 tyre to a narrower 6" rim. If you want more comfort you could fit the 205/55R16 tyre to a narrower 6Jx16 ET50 rim, or if you don't mind using a non-standard offset, then perhaps fitting a 205/55R16 tyre to a 6Jx16 ET43 rim from the Karoq. However, the ET43 offset wouldn't be correct for snow chains. Perhaps you could ask your insurance company if it's ok to use 205/55R16 winter tyres with a 6Jx16 ET43 rim instead of the approved 6Jx16 ET50 rim, as it's just a 7mm difference in offset. If it's ok, then all-season tyres could be used on 6Jx16 ET43 rims as they are winter rated due to their 3PMSF symbol. What tyre sizes are listed on the white label inside the fuel filler flap? What make, model, and full specification of 205/55R16 have you been using? Something like the below 205/55R16 tyre should provide a good ride if fitted to a relatively narrow 6" rim width, as it has soft and flexible sidewalls and isn't over-specified. For example it's Standard Load and not Extra Load, and it's H-speed rated and not V, W, Y. 205/55R16 tyres with a 91 load index are Standard Load, and 205/55R16 tyres with a 94 load index are Extra Load. Michelin CrossClimate 2 205/55R16 91H 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

I expect it's the BTS engine. You can find out what the engine code is by looking at the white build code label under the carpet near the spare wheel well, as demonstrated in the below video.

This rim from the Kodiaq would fit the Karoq, perhaps with either standard 215/55R17 or slightly oversize 215/60R17 tyres. The outside edge of this 6.5J rim would be in about the same place as the standard Karoq 7Jx17 ET45 rim. The 215/60R17 tends to be a cheaper tyre size than 215/55R17, so there could be long term cost savings if this tyre size was adopted instead of the standard 215/55R17. 6.5Jx17 ET38 5/112 57.1 alloy rim (from Kodiaq)(about £211.70 each) https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-nanuq-17-kodiaq/p/565071497D+FL8 6.5Jx17 ET38 5/112 57.1 steel rim (from Kodiaq) (perhaps for use as a spare wheel to match the specification of the above Kodiaq alloy rim) (about £63 each) https://www.oponeo.co.uk/steel-wheel/vw-w9021#23183793

Wheel bolts with ball shaped seats are often incorrectly used in rims that are machined to accept wheel bolts with cone shaped seats. I don't know what type of seat has been machined into the Rial rims. I suspect it's cone shaped. Maybe ask Rial? Whatever type of wheel bolts you use, it's very important to check that the wheel bolts are a suitable length and are inserted with a suitable number of turns. I usually want at least 6.5 turns if it's a 1.5mm thread pitch (probably at least 8 turns if it's a finer 1.25mm thread pitch) and I would always count the turns carefully if fitting different rims and/or different wheel bolts. Skodas/VAGs tend to use wheel bolts with 1.5mm pitch threads.

It looks like Alfred has aftermarket alloy rims. If so, then aftermarket alloy rims usually have cone shaped seats. So those Eibach S1-6-14-50-37-17 wheel bolts won't fit the aftermarket alloy rims correctly. Aftermarket alloy rims often have a bigger centre bore than 57.1mm, therefore requiring a spigot to be used to centre the rim correctly on the hub. Ball shaped seats = spherical seats = sphere shaped seats Cone shaped seats = conical seats = taper seats So slightly different descriptions for the same thing.

Apart from the 10mm difference in length, the head has been hollowed out on the standard wheel bolt to save weight, as you can see in the photo below. Other than that, they are the same specification. Notice that the Eibach part numbers are almost the same, except for the 27 and 37 which represents the length of the thread in millimetres. EIBACH S1-6-14-50-27-17 Standard Wheel Bolt https://www.autodoc.co.uk/eibach/1931742?search=EIBACH Wheel Bolt (S1-6-14-50-27-17)

EIBACH S1-6-14-50-37-17 Wheel Bolt (for 10mm wheel spacers) https://www.autodoc.co.uk/eibach/15258679

The 256x22mm front brake discs on the Fabia MK1 use ATE front brake calipers. Brake disc (vented) 256x22 5/100 1J0615301L https://www.lllparts.co.uk/catalogs/skoda/CZ/FAB/453/6/615/615016 256x22mm front brake discs ATE 24.0122-0151.1 https://www.autodoc.co.uk/ate/957347 https://www.ebay.co.uk/sch/33564/i.html?_from=R40&_nkw=ATE+24.0122-0151.1&Brand=ATE&_dcat=33564&_sop=15

Does the front end look high? Does the rear end look low? Maybe your rear springs are sagging and need replacing also? If new rear springs increase the rear ride height, that will bring the dipped headlamp beams back down again. Do the gaps between the top of the tyres and the bottom of the wheelarches look like the below photo when the car is unladen? Superb MK2 Estate https://en.wikipedia.org/wiki/Škoda_Superb#/media/File:Skoda_Superb_II_Combi_rear_20100926.jpg

One problem with the 8Jx19 ET45 rims on the Karoq is that they are relatively wide for the 225/40R19 tyre size. Relatively wide rims make the ride harder. As well as 225/40R19, 235/40R19 is also used on the Karoq 2WD. Have a look at the white label inside the fuel filler flap. You might see both of these sizes listed. So changing from 225/40R19 to 235/40R19 will add 4mm in height to the sidewalls, and on the 8J rim the 235/40R19 tyre size won't be as stretched as the 225/40R19 tyre size. Your Y-speed rating is good for 186mph, but your Karoq doesn't even go over 130mph. So H-speed rating would be sufficient. This can make a big difference to ride comfort, because the sidewalls of lower speed tyres tend to be more flexible, all other things being equal. The Michelin CrossClimate 2 is an all-season tyre and is winter rated, ie. it has the 3PMSF symbol. 235/40R19 fitted to 8J rims is also a standard Superb MK3 tyre size. Michelin CrossClimate 2 235/40R19 96H XL (Euro label B B 71dB) https://www.camskill.co.uk/m142b0s10015p208572/Michelin_Tyres_All_Season_Car_Michelin_Cross_Climate_2_-_235_40_R19_96H_XL_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_71dB 225/60R16 is a Karoq 4WD tyre size, but could be used on the Karoq 2WD instead of the standard 215/60R16. The standard 16" rim on the Karoq is 6Jx16 ET43, and is used with both the 215/60R16 on the Karoq 2WD and the 225/60R16 on the Karoq 4WD. The Yeti used a 7Jx16 ET45 rim for its 215/60R16 tyre size, and would be a good alternatve rim choice on the Karoq with the 225/60R16 tyre size. Vredestein Quatrac 6 225/60R16 102H XL (Euro label B B 71dB) https://www.camskill.co.uk/m139b0s8011p202131/Vredestein_Tyres_All_Season_Car_Vredestein_Quatrac_6_-_225_60_R16_102H_XL_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_71dB 7Jx16 ET45 5/112 57.1 steel rim https://www.mytyres.co.uk/rims/details?vehicleId=182363349315490928&rimCode=ALCAR9257

185/60R15 fitted to a 6Jx15 ET38 5/100 57.1 rim is a good compromise between comfort and handling on the Fabia MK2. This may explain why this tyre and rim specification became a standard fit on the later Fabia MK3. Outside diameter of tyre 195/55R15 595.5mm 185/60R15 603.0mm (+1.3% compared to 195/55R15) 205/45R17 616.3mm (+3.5% compared to 195/55R15) Alcar 7760 6Jx15 ET38 5/100 57.1 steel rim (from Fabia MK3) https://www.mytyres.co.uk/rims/rim-selector?type=steel&vehicle_ids=799640172265231460%3A%3A0001 Alcar 8380 6Jx15 ET38 5/100 57.1 steel rim (from Octavia MK1) https://www.mytyres.co.uk/rims/details?vehicleId=180274277222716516&rimCode=ALCAR8380

Wheel trims will cover the rusty steel rims. Wheel trim for 6Jx14 ET43 5/100 57.1 steel rim 6Y0601147C MWS https://www.lllparts.co.uk/catalogs/skoda/CZ/FAB/225/6/601/601010 The Fabia MK1 VRS came with 195/45R16 tyres, not 205/45R16. 205/45R16 will fit those 6.5J rims, and it's not uncommon for owners to change to the larger size. However, 185/60R14 a much cheaper and more comfortable tyre size than 16" tyres, and far more resistant to pothole damage. 6.5Jx16 ET37 5/100 57.1 alloy rim 6Y0601025M 6Y0601025M 7ZS Aluminium rim 6.5Jx16 ET37 RS chrome coloured metallic https://www.lllparts.co.uk/catalogs/skoda/CZ/FAB/453/6/601/601060 In the below example, the 205/45R16 is almost twice the price of 185/60R14. Vredestein Quatrac 5 185/60R14 82T (£51.00 each + shipping) https://www.camskill.co.uk/m137b0s7979p134034/Vredestein_Tyres_All_Season_Car_Vredestein_Quatrac5_Vredestein_Quatrac_5_-_185_60_R14_82T_TL_Fuel_Eff_%3A_D_Wet_Grip%3A_C_NoiseClass%3A_B_Noise%3A_69dB Vredestein Quatrac 6 205/45R16 83H (£101.05 each + shipping) https://www.camskill.co.uk/m139b0s9046p202110/Vredestein_Tyres_All_Season_Car_Vredestein_Quatrac_6_-_205_45_R16_83H_TL_Fuel_Eff_%3A_D_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_70dB

This alloy rim is shown in the Skoda parts catalogue, and when fitted to the Superb MK1 would normally be fitted with a 205/55R16 tyre. 7Jx16 ET37 5/112 57.1 alloy rim 3U0601025A 3U0601025A 7ZS Aluminium rim 7Jx16 ET37 METAN chrome coloured metallic https://www.lllparts.co.uk/catalogs/skoda/CZ/SUP/265/6/601/601050

According to wikipedia, production of the Roomster ended in 2015 so didn't get the later 1.2TSI 16V cambelt engine. Skoda Roomster https://en.wikipedia.org/wiki/Škoda_Roomster