Carlston

In the Karoq owner's manual, 215/60R16 6Jx16 ET43 is the only size recommended by Skoda for the fitment of snow chains. If fitting 16" wheels to a Karoq was a problem, that owner wouldn't be able to drive their car in the snow...clearly, that's not the case.

Back to the original question... 6.5Jx16 ET46 is only 0.5" wider than standard and only has 3mm more offset than standard. You should be fine using that rim specification with the standard 215/60R16 tyre size. All Karoq models can use 16" rims because none of the brakes used on these cars are big enough to necessitate 17" rims, ie. the Karoq doesn't use bigger front brakes than 312x25mm. Karoq front wheel drive wheels (Skoda approved, but check the car's Certificate of Conformity to be sure) 215/60R16 6Jx16 ET43 5/112 57.1 215/55R17 7Jx17 ET45 5/112 57.1 215/50R18 7Jx18 ET45 5/112 57.1 225/40R19 8Jx19 ET45 5/112 57.1 235/40R19 8Jx19 ET45 5/112 57.1 Karoq 4x4 wheels (Skoda approved, but check the car's Certificate of Conformity to be sure) 225/60R16 6Jx16 ET43 5/112 57.1 225/55R17 7Jx17 ET45 5/112 57.1 225/50R18 7Jx18 ET45 5/112 57.1 225/45R19 8Jx19 ET45 5/112 57.1 245/40R19 8Jx19 Et45 5/112 57.1

As you can see below, 3V0601025F is Diamond silver, whereas 3V0601025AG is Gloss black. 8Jx18 ET44 5/112 57.1 Zenith alloy rim 3V0601025F 8Z8 Diamond silver 8Jx18 ET44 5/112 57.1 Zenith alloy rim 3V0601025AG JX2 Gloss black 3V0071498E 8Z8 appears to be the same as 3V0601025F 8Z8, except for the OEM part number that is cast into it. The difference is the xxx071xxx alloy rim is in the Skoda alloy rim accessory catalogue. However, it's not in the latest one, so might not be available to order anymore. The price in Czech would be about £240 including VAT, because the alloy rims in the Skoda alloy rim accessory catalogue are priced to compete with aftermarket alloy rims...hence they are often about 40% of the factory price, ie. about 60% off the price of the factory alloy rims. The xxx061xxx format is a factory alloy rim, whereas the xxx071xxx format is from the Skoda alloy rim accessory catalogue...and hence much cheaper. 2021 Skoda alloy rim accessory catalogue https://www.skoda.co.uk/_doc/639a0118-4da5-446b-a786-86e1f789b57b If you find the OEM part number of any alloy rim in the Skoda alloy rim accessory catalogue, it can be ordered from any VAG parts department...if it's still available. However, 3V0071498E might not be available anymore because it's not in the latest Skoda alloy rim accessory catalogue. If you wanted to order a cheap steel spare rim, mytyres are listing an 8Jx18 ET45 5/112 57.1 steel rim that is only 1mm difference in offset to the 8Jx18 ET44 5/112 57.1 alloy rim. Alcar 9383 8Jx18 ET45 5/112 57.1 steel rim (from Skoda Enyaq iV and VW iD.4 and VW iD.Buzz) https://www.mytyres.co.uk/rims/details?vehicleId=1313955427855111280&rimCode=ALCAR9383

The 312x25mm calipers won't work with the 314x30mm front brake discs. The VW Sharan MK2 and the similar Seat Alhambra MK2 use the 314x30mm front brakes matched to 300x12mm rear brakes, exclusively. There are no other brake sizes used on those two cars. Some VW Tiguan MK2 Allspace cars use the 314x30mm front brakes, probably matched to 300x12mm rear brakes. Some Kodiaq cars use the 314x30mm front brakes, probably matched to 300x12mm rear brakes.

The Audi A1 and Polo MK6 GTI use different 312x25mm front brake discs. The Polo MK6 GTI front brake disc is about 4.5mm wider...as shown in the diagrams below. Which ones are you using? If you are using the Audi A1/Skoda Scala wheel bearing 2Q0407621A rather than the Polo MK6 GTI wheel bearing 2Q0407621B (which I believe you have to, otherwise the Scala driveshaft would be too short to work with the Polo MK6 GTI wheel bearing), it looks like you need the 2Q0615301J front brake discs...otherwise I suspect the brake caliper slider would be about 4.5mm further pushed into the wheelarch than it should be. Audi A1 MK2 front brake disc 312x25mm 5/100 2Q0615301J VW Polo MK6 Front brake disc 312x25mm 5/100 2Q0615301N

All the Superb MK3 cars, except for the 2.0TSI 272HP/280HP 4x4 use 312x25mm front brake discs. The 2.0TSI 272HP/280HP 4x4 uses 340x30mm front brake discs. You could fit the 314x30mm front brakes from the Kodiaq, which are far more beefy than the 312x25mm front brakes. These use the same front brake calipers and front brake pads as the 340x30mm front brakes. The diameter of the caliper pistons on the 314x30mm brake calipers is 60mm, whereas the diameter of the caliper pistons on the 312x25mm brake calipers is 57mm. 60mm pistons apply 10.8% more pressure to the front brake pads, compared to the smaller 57mm pistons. The area of the friction material on the brake pads that the 314x30mm brake calipers use is also bigger than the area of the friction material on the brake pads that the 312x25mm brake calipers use. You can see below in the diagrams of both designs of front brake discs, that the 314x30mm front brake discs have much better cooling than the 312x25mm design. The 314x30mm front brake discs have a 10.5mm gap in the centre of the disc for ventilation, whereas the 312x25mm front brake discs only have a 8.5mm gap. Additionally, the 314x30mm front brake discs have 128 pillars, whereas the 312x25mm have 40 fins. Also, the weight of the 314x30mm front brake discs are almost 10% heavier...so would take longer for them to overheat. The combined result of all this is a significant upgrade in the effectiveness of the front brakes. The Kodiaq matches these 314x30mm front brakes with 300x12mm rear brakes...which you already have. So there would be no mismatch in front and rear brakes with this front brake upgrade. Left front brake caliper for 314x30mm front brake discs TRW BHS1230E (matches 3C0615123) https://www.autodoc.co.uk/trw/2184642#brake-caliper Right front brake caliper for 314x30mm front brake discs TRW BHS1231E (matches 3C0615124) https://www.autodoc.co.uk/trw/2184643#brake-caliper Left front brake caliper carrier for 314x30mm front brake discs TRW BDA1019 (matches 7N0615125) https://www.autodoc.co.uk/trw/2183223#carrier-brake-caliper Right front brake caliper carrier for 314x30mm front brake discs BDA1020 (matches 7N0615126) https://www.autodoc.co.uk/trw/2183224#carrier-brake-caliper Front brake pads for 312x25mm front brake discs Front brake pads for 314x30mm front brake discs 312x25mm front brake disc 8.6kg 314x30mm front brake disc 9.4kg 340x30mm front brake disc 10.8kg

In some markets with bad roads, they fit 185/60R15 6Jx15 ET38 5/100 57.1 and 195/55R16 6Jx16 ET40 5/100 57.1 to the Rapid. 195/55R16 is one of the cheapest 16" tyre sizes. However, for the 7Jx16 ET46 5/100 57.1 rim, 205/50R16 could be considered. A 7J rim is a little wide for the 195/55R16 tyre size, with 6J and 6.5J being the usual rim widths for the 195/55R16 tyre size. Here are some examples of summer tyres in the 205/50R16 87V size. Hankook Ventus Prime4 K135 205/50R16 87V (Euro label C A 69dB) https://www.camskill.co.uk/m62b0s300p212192/Hankook_Tyres_Car_Hankook_Ventus_Prime4_K135_205_50_R16_87V_RPB_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_69dB Michelin Pilot Sport 3 205/50R16 87V (Euro D A 71dB) https://www.mytyres.co.uk/rshop/tyre/Michelin/Pilot-Sport-3/205-50-R16-87V/R-261807 Uniroyal RainSport 5 205/50R16 87V (Euro label C A 71dB) https://www.mytyres.co.uk/rshop/tyre/Uniroyal/RainSport-5/205-50-R16-87V-EVc/R-402359 Vredestein Ultrac 205/50R16 87V (Euro label C A 69dB) https://www.mytyres.co.uk/rshop/tyre/Vredestein/Ultrac/205-50-R16-87V/R-441642 Unlike the 205/50R16 size, there's a good selection of all-season tyres in the 195/55R16 size. Here are some examples. Continental AllSeasonContact 2 195/55R16 87H (Euro label B B 71dB) https://www.camskill.co.uk/m139b0s7952p221968/Continental_Tyres_All_Season_Car_Continental_Conti_All_Season_Contact_2_195_55_R16_87H_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_71dB Michelin CrossClimate 2 195/55R16 87H (Euro label C B 69dB) https://www.camskill.co.uk/m139b0s7952p208526/Michelin_Tyres_All_Season_Car_Michelin_Cross_Climate_2_195_55_R16_87H_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_B_NoiseClass%3A_A_Noise%3A_69dB Vredestein Quatrac 6 195/55R16 87H (Euro label C B 70dB) https://www.camskill.co.uk/m139b0s7952p202114/Vredestein_Tyres_All_Season_Car_Vredestein_Quatrac_6_195_55_R16_87H_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_70dB For the 195/55R16 tyre size, you could look at the 6Jx16 ET35 5/100 57.1, 6Jx16 ET38 5/100 57.1, and 6Jx16 ET40 5/100 57.1 rim sizes from the Scala/Kamiq. 6Jx16 ET35 5/100 57.1 and 6Jx16 ET38 5/100 57.1 are available from the Scala/Kamiq as alloy rims, and 6Jx16 ET35 5/100 57.1 and 6Jx16 ET40 5/100 57.1 are available from the Scala/Kamiq as steel rims. I would probably go for the ET35 offset, because that is available as both a steel rim and an alloy rim...so for example, you could use four alloy rims and one steel rim as a spare...and the offsets would all match. 16" alloy rims from the Skoda accessory catalogue https://eshop.skoda-auto.cz/cs_CZ/alu-kola/c/alloyWheels?sort=priceAsc&q=%3AscoreDesc%3AcarType%3AScala%2B%282019%2B%29%3ArimDiameter%3A16#

You could try 1K0511115BG rear springs. These are normally fitted to the Octavia MK2 front wheel drive estate with towbar. So if you've got a hatchback, they might be two or three up in the hierarchy to what was fitted in the factory. Lots of rear springs sold to replace (but not always matching) 1K0511115BG listed on autodoc https://www.autodoc.co.uk/car-parts/oem/1k0511115bg?supplier[]=246&supplier[]=85&supplier[]=37&supplier[]=253 KYB RH6788 rear springs (matches 1K0511115BG) https://www.ebay.co.uk/itm/235478942810 Kilen 63118 (matches 1K0511115BG) https://www.ebay.co.uk/itm/355735726130 If you want to refresh the rear shock absorbers when changing the rear springs, Bilstein B4 19-183749 and Bilstein B6 33-158723 rear shock absorbers should both be suitable. The Bilstein B6 are particularly nice, because they have a superior mono-tube design whereas the cheaper Bilstein B4 have a standard twin-tube design. However, even the Bilstein B4 should work as well as the OE ones. Bilstein rear shock absorbers https://www.autodoc.co.uk/car-parts/oem/1k0513029er?supplier[]=16 Bilstein B4 19-183749 rear shock absorbers https://www.ebay.co.uk/itm/334172195106

Both Jurid and Ferodo on autodoc list the Octavia MK3 2.0TSI 230HP as having 272x10mm rear brake discs. Most of the other brands seem quite clueless about what rear brakes fit this car. However, it's always best to check the car's build codes just in case Skoda fitted 310x22mm rear brake discs to some of the 230HP cars. Octavia MK3 2.0TSI 230HP rear brake discs https://www.autodoc.co.uk/car-parts/brake-disc-10132/skoda/octavia/octavia-5e3/115160-2-0-tsi-rs?supplier[]=48&supplier[]=62&criteria[100][]=HA

What is the OEM part number of the Sirius alloy rims? This will be cast into the back of the rims. Perhaps 565071499J 8Z8 ? I suspect they are actually Kodiaq alloy rims because the 19" Karoq alloy rims have a specification of 8Jx19 ET45 5/112 57.1 whereas the 19" Kodiaq alloy rims have a specification of 7Jx19 ET43 5/112 57.1 £425 seems somewhat of a bargain because similar alloys are listed in the Skoda alloy rim accessory catalogue for about £300 each. So even if someone doesn't want the tyres, the rims could be useful for both the Kodiaq and the Karoq. 225/45R19 tyres for the Karoq 4x4 or 235/50R19 for the Kodiaq. According to ETRTO, 225/40R19 needs at least a 7.5J rim width but the higher profile 225/45R19 is fine on a 7J rim width...and Skoda themselves have previously fitted 225/45 to 7J rims...most notably on the Octavia MK3. Bear in mind that Skoda approves 19" tyres in sizes 225/40R19 and 235/40R19 for the Karoq front wheel drive, whereas Skoda approves 19" tyres in sizes 225/45R19 and 245/40R19 for the Karoq 4x4. Out of these four tyre sizes, ETRTO only approves the 225/45R19 tyre size for a 7J rim width.

It's 1J9511115G, not IJ9511115G...ie. the first character is the number one not the letter i. Kilen 63147 is the same as Lesjofors 4285748. Kilen and Lesjofors are made in the same factory is Sweden. They are the biggest aftermarket manufacturer of car springs in Europe. Being Swedish I expect they will last a lot longer than your other short lived springs. It was really easy to find what OEM part number your car uses because the Octavia parts catalogue only lists two rear springs for the Octavia MK1 4x4. The 1J9511115G rear spring (two white dots and two blue dots) is for the Octavia MK1 hatchback 4x4 and the 1J9511115D rear spring (five orange dots) is for the Octavia MK1 estate 4x4. Kilen 63147 rear spring (matches 1J9511115G) https://www.ebay.co.uk/itm/194832892177 Skoda Octavia MK1 parts catalogue https://www.lllparts.co.uk/catalogs/skoda/CZ/OCT/252/5/511/511015

The foam and jack kit (as linked to below) can be purchased from any VAG parts department by quoting OEM part number 6V0093860B. The Czech price is 1459CZK (about £50.16) but the UK price might be slightly more. The kit includes everything except for the actual spare wheel, which can be purchased separately. The usual size spare wheel to use for the Fabia MK3 is 185/60R15 6Jx15 ET38 5/100 57.1 mytyres are selling the Alcar 7760 6Jx15 ET38 5/100 57.1 steel rim for about £47.80 including shipping to the UK. Alcar steel rims are made in Switzerland and are one of the top aftermarket steel rim manufacturers. The Alcar 7760 has exactly the same specification as the Fabia MK3 steel rim and looks exactly the same as you can see in the below photo. Purchasing the steel rim separately, allows the tyre to be choosen separately. Below, I've given the Uniroyal RainExpert 5 185/60R15 84H as an example. For a spare tyre it's probably best not to choose a directional tread pattern so that the spare wheel can be correctly fitted in any position on the car. Uniroyal RainExpert 5 185/60R15 84H (Euro label C A 70dB) https://www.camskill.co.uk/m53b0s410p208661/Uniroyal_Tyres_Car_Uniroyal_RainExpert_5_185_60_R15_84H_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_70dB Alcar 7760 6Jx15 ET38 5/100 57.1 steel rim (for Fabia MK3) https://www.mytyres.co.uk/rims/details?vehicleId=799637973241959524&rimCode=ALCAR7760 Foam and jack kit for Fabia MK3 6V0093860B https://eshop.skoda-auto.cz/cs_CZ/sada-pro-vymenu-rezervniho-kola-15/p/6V0093860B

EBC brake pads might not use anti-squeal shims. EBC DP1518 are listed to replace 1K0698451K

Take a look at the below ebay link. There are many photos of the clips from various sellers. The clips look narrow like yours. TRW GDB1622 https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=trw+gdb1622&_sacat=0&LH_ItemCondition=3&_sop=15&rt=nc&Brand=TRW&_dcat=57357

The clips don't look right. There should be a 28mm gap as shown in the below diagram from ATE. https://www.autodoc.co.uk/ate/955510?search=ATE+Brake+pad+set+(13.0460-2887.2) Textar also show a 28mm (27.8mm) gap. https://www.autodoc.co.uk/textar/7639424?search=TEXTAR+Brake+pad+set+(2391402) These Hella ones also look like they have a similar gap. https://www.autodoc.co.uk/hella/10402388?search=HELLA+Brake+pad+set+(8DB+355+011-771) However, these Bosch and Ferodo ones look like they have a narrower gap. https://www.autodoc.co.uk/bosch/7885307?search=BOSCH+Brake+pad+set+(0+986+494+649) https://www.autodoc.co.uk/ferodo/1508017?search=FERODO+Brake+pad+set+(FDB1636) These are two of the photos for the TRW GDB1622 shown on autodoc https://www.autodoc.co.uk/trw/2192248?search=TRW+Brake+pad+set+(GDB1622) The clips for the TRW GDB1622DTE (different from TRW GDB1622) look narrower. https://www.autodoc.co.uk/trw/7620207#brake-pad-set

I've never used ErWin, but someone did mention once that it cost 7 Euros for 1 hour's access...which apparently is enough to download your cars's factory options, ie. build codes. However, there's a seller on ebay who can supply the build codes for about 3 Euros. Search "skoda vin decoder" on ebay to find this listing https://www.ebay.co.uk/itm/224631127243 You might also want to take a look at the following website which shows the Skoda approved rim sizes for the Superb MK3 https://eshop.skoda-auto.cz/cs_CZ/alu-kola/c/alloyWheels?sort=priceAsc&q=%3AscoreDesc%3AcarType%3ASuperb%2BIII%2B%282015-2024%29&show=Page# Wheel sizes for Superb MK3 (16" wheels won't fit the Superb MK3 2.0TSI 272HP/280HP 4x4) 6.5Jx16 ET41 5/112 57.1 (215/60R16) 6.5Jx17 ET41 5/112 57.1 (215/55R17) 7Jx17 ET40 5/112 57.1 (215/55R17) 8Jx18 ET44 5/112 57.1 (235/45R18) 8Jx19 ET44 5/112 57.1 (235/40R19) You might also want to look at the car's CoC (Certificate of Conformity) which shows all the Skoda approved wheel sizes. Here's a couple of suggestions for the 17" tyre size. The 18" option won't ride as well as the narrower, higher profile 17" option. The 17" option will also be slightly more economical, ie. slightly better fuel consumption. Continental AllSeasonContact 2 215/55R17 94V (Euro label B B 70dB) (3PMSF) https://www.camskill.co.uk/m140b0s8825p220589/Continental_Tyres_All_Season_Car_Continental_Conti_All_Season_Contact_2_215_55_R17_94V_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_70dB Vredestein Ultrac 215/55R17 94W (Euro label C A 69dB) https://www.camskill.co.uk/m54b0s1714p210552/Vredestein_Tyres_Car_Vredestein_Ultrac_215_55_R17_94W_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_69dB Bear in mind that even into the early 1990's, some of the big Jaguar cars used 215/70R15 tyres...so the much lower profile 215/55R17 is going to be able to provide far more lateral grip than that tyre could...plus thirty years of tyre development. Outside diameter of tyre 215/70R15 682mm (2.0% bigger outside diameter compared to 215/55R17) 215/55R17 668.3mm Big Jag from around 1991 perhaps with 215/70R15 tyres https://en.wikipedia.org/wiki/Jaguar_XJ#/media/File:1992_Jaguar_Sovereign_4.0_Rear.jpg A non-standard 16" tyre option could be 205/65R16. Apart from the superb ride comfort, even better than 215/55R17...this tyre size fits in the spare wheel well without raising the carpet. The 205/65R16 tyre size could be fitted to the standard 16" rim size, ie. 6.5Jx16 ET41 5/112 57.1. Outside diameter of tyre 205/65R16 672.9mm (0.7% bigger outside diameter compared to 215/55R17) 215/55R17 668.3mm Vredestein Ultrac 205/65R16 95W (Euro label A A 70dB) https://www.camskill.co.uk/m62b0s2785p210548/Vredestein_Tyres_Car_Vredestein_Ultrac_205_65_R16_95W_TL_Fuel_Eff_%3A_A_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_70dB 7Jx17 ET40 5/112 57.1 Ratikon alloy rims (from Kodiaq but same specification as Superb MK3) (11.1kg) 565071497A 8Z8 https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-ratikon-17-kodiaq/p/565071497A+8Z8 Here's four links to Michelin Primacy 4+ tyres in the standard 215/55R17 and 235/45R18 sizes, and slightly oversize 225/55R17 and 245/45R18 sizes...all with W (168mph/270km/h) speed ratings and XL (eXtra Load). They all have B A 70dB Euro labels. The Michelin Primacy is a summer touring tyre, so will give a smoother, quieter, more refined ride than an UHP (Ultra High Performance) summer tyre such as the Michelin Pilot Sport. The summer touring tyre will also tend to have a longer tread life than the UHP summer tyre. Outside diameter of tyre 215/55R17 668.3mm 225/55R17 679.3mm (1.3% bigger outside diameter compared to 235/40R19) 235/45R18 668.7mm 245/45R18 677.7mm (1.1% bigger outside diameter compared to 235/40R19) Michelin Primacy 4+ 215/55R17 98W XL (Euro label B A 70dB) https://www.camskill.co.uk/m54b0s1714p210232/Michelin_Tyres_Car_Michelin_Primacy_4%2B_215_55_R17_98W_XL_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_70dB Michelin Primacy 4+ 225/55R17 101W XL (Euro label B A 70dB) https://www.camskill.co.uk/m54b0s466p210230/Michelin_Tyres_Car_Michelin_Primacy_4%2B_225_55_R17_101W_XL_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_70dB Michelin Primacy 4+ 235/45R18 98W XL (Euro label B A 70dB) https://www.camskill.co.uk/m61b0s2057p210225/Michelin_Tyres_Car_Michelin_Primacy_4%2B_235_45_R18_98W_XL_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_70dB Michelin Primacy 4+ 245/45R18 100W XL (Euro label B A 70dB) https://www.camskill.co.uk/m61b0s315p209227/Michelin_Tyres_Car_Michelin_Primacy_4%2B_245_45_R18_100W_XL_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_70dB

235/45R18 has the same load indexes as 215/55R17, so you can use the same tyre pressures as 215/55R17...at least until you find the Skoda recommended tyre pressures for the 235/45R18. Standard Load index 215/55R17 94 235/45R18 94 Extra Load index 215/55R17 98 235/45R18 98

I've found four different colours for the Torino 7Jx17 ET46 5/100 57.1 alloy in a 2021 Skoda alloy rim accessory catalogue. However, I've no ideal if they are still available to order as the latest catalogues no longer show alloy rims for the now old Fabia MK3. Torino 7Jx17 ET46 5/100 57.1 alloy rims (for Fabia MK3) black gloss 5JA071497AA JX2 black matt brushed 5JA071497Q ZG6 black metallic brushed 5JA071497P FL8 silver metallic brushed 5JA071497N 8Z8 https://www.skoda.co.uk/_doc/639a0118-4da5-446b-a786-86e1f789b57b Wide low-profile tyres such as 215/40R17 can have more lateral grip in warm dry summer weather, so if you push them hard through the corners you will be travelling faster if you lose control of the car than if the car was on narrower tyres. Once you have a lot of driving experience you should be able to drive safely on any tyres because knowing what you can and can't do safely on whatever tyres are fitted to the car is the difference between losing your no claims bonus or keeping it. You should be aware that tyre grip varies enormously depending on weather and road conditions. A wide low-profile summer tyre such as 215/40R17 can have surprising little grip in cold weather, especially if there is snow or ice...but they aren't good even in cold rain below about 7 degrees centigrade. Another thing to be aware of is the large difference in price between different tyre sizes. For example, a good 185/60R15 tyre might cost £80 but a good 215/40R17 tyre might cost £130. Multiply the difference by five to include a spare, and that's £250 more for a set of new tyres.

If the 215/40R17 7Jx17 ET46 fits, the rim can be ordered from any VAG parts department by quoting OEM part number 5JA071497AA JX2. The Czech price for this alloy rim is 4749CZK which is about £163.52 but the UK price might be slightly more. This alloy rim is from the Skoda accessory catalogue which tend to be less than half the price of factory alloy rims. You can tell it's an accessory rim because of the xxx071xxx format, whereas factory rims have the xxx061xxx format. Torino 7Jx17 ET46 Glossy black alloy rim 5JA071497AA JX2 https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-torino-17-fabia-iii-rapid/p/5JA071497AAJX2 The below Fabia MK3 foam and jack kit can be ordered from any VAG parts department by quoting the OEM part number 6V0093860B. The Czech price is 1459CZK which is about £50.24 but the UK price might be slightly more. Foam and jack kit 6V0093860B (for Fabia MK3) (includes everything except the actual spare wheel...which needs to be purchased separately) https://eshop.skoda-auto.cz/cs_CZ/sada-pro-vymenu-rezervniho-kola-15/p/6V0093860B One non-standard spare wheel that could be considered instead of 185/60R15 6Jx15 ET38 5/100 57.1 is 195/50R16 6Jx16 ET40 5/100 57.1. However I don't know whether it would fit in the spare wheel well with the carpet flush. I suspect it might do because the actual inflated width is only 6mm wider than the 185/60R15 6Jx15 ET38 5/100 57.1...and the offset is 2mm more, which might help if the foam and jack kit rests on the inside of the spare wheel, ie. where the spare wheel normally contacts the hub face when it is fitted to the car. Actual inflated width of tyre (measured from the outside of one sidewall to the outside of the other sidewall, at the widest point) 185/60R15 6Jx15 ET38 5/100 57.1 195mm 195/50R16 6Jx16 ET40 5/100 57.1 201mm (non-standard on Fabia MK3) 215/45R16 7Jx16 ET46 5/100 57.1 213mm 215/40R17 7Jx17 ET46 5/100 57.1 212mm Vredestein Ultrac 195/50R16 88V XL (Euro label C A 69dB) https://www.camskill.co.uk/m62b0s298p200860/Vredestein_Tyres_Car_Vredestein_Ultrac_195_50_R16_88V_XL_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_69dB Alcar 6977 6Jx16 ET40 5/100 57.1 steel rim (from Scala/Kamiq) https://www.mytyres.co.uk/rims/details?vehicleId=1087670437300671588&rimCode=ALCAR6977

2Q0407621A wheel bearings should fit the 2Q0407255L and 2Q0407256L wheel bearing housings because that's what the Audi A1 uses with its 312x25mm front brakes. Wheel bearing housings for 312x25mm front brakes 1ZA 2Q0407255L Left wheel bearing housing 2Q0407256L Right wheel bearing housing

The VAG parts catalogue lists 2Q0407621A for the Scala front hub bearings whereas it's 2Q0407621B for the Polo MK6 GTI. On autodoc, there are plenty of the 2Q0407621A front hub bearings but only two listed for the 2Q0407621B front hub bearings...and those two are out of stock. The Audi A1 is listing the 2Q0407621A front hub bearings for its 312x25mm front brake models, not the 2Q0407621B that the GTI uses...so the 2Q0407621A can be used with the 312x25mm front brakes.

To work out the sidewall height of a tyre, multiply the nominal tyre width by the aspect ratio. For example, 225x0.40=90, 225x0.45=101.25, 245x0.4=98. Sidewall height of tyre 225/40 90mm 225/45 101.25mm 245/40 98mm To work out the outside diameter of a tyre, first convert the diameter of the rim into millimetres and then add twice the sidewall height. For example, 19x25.4+2x225x0.4=662.6, 19x25.4+2x225x0.45=685.1, 19x25.4+2x245x0.4. Outside diameter of tyre 225/40R19 662.6mm 225/45R19 685.1mm (3.4% bigger compared to 225/40R19) 245/40R19 678.6mm (2.4% bigger compared to 225/40R19)

225/45R19 and 245/40R19 are the standard 19" Karoq 4x4 tyre sizes. By comparison, the standard 19" Karoq front wheel drive tyre sizes are 225/40R19 and 235/40R19. As you can see in the chart below, the 245/40R19 when fitted to an 8J rim has an actual inflated width 11mm wider than the 225/45R19 tyre size when fitted to an 8J rim. As the 8J rim has an actual width of about 227mm, the sidewalls on the 225/45R19 tyre when fitted to this 8J rim will hardly bulge out at all, ie. only about 4mm or 2mm each side. By contrast, the sidewalls on the wider 245/40R19 will bulge out by about 15mm, ie. about 7.5mm each side. This will result in the wider 245/40R19 tyre giving much better protection to the alloy rim from kerbing damage. Actual inflated width of tyres when fitted to 8J rim width (measured from the outside of one sidewall to the outside of the other sidewall, at the widest point) 225/45R19 231mm 245/40R19 242mm (11mm wider compared to 225/45R19)

The OP has 8Jx19 ET45 5/112 57.1 VEGA alloy rims https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-vega-19-karoq/p/57A071499B+FL8 Rather than 245/45R19, I suggest you use 245/40R19 because someone has already tried 245/40R19 on their Karoq 1.5TSI front wheel drive and they work very well on the standard Karoq rims. However, it's easy to get carried away with wide low-profile tyres when narrower higher profile tyres will not only give a better ride but better fuel consumption and less noise. The standard 17" rims on the Karoq have a specification of 7Jx17 ET45 5/112 57.1. For a personalised look, perhaps look at 6.5Jx17 ET38 5/112 57.1 from the Kodiaq instead together with the standard Karoq front wheel drive 215/55R17 or an oversized 215/60R17 tyre size. The ET38 offset of the Kodiaq rims will move the centre of each wheel 7mm further out in the wheelarch, which increases the front and rear track by 14mm...for that personalised look. The narrower 6.5J rim will slightly improved the ride comfort compared to fitting the 215 tyres to the standard 7J Karoq rims because narrower rims help the sidewalls to flex more easily. Notice in the two tyre examples below, that by specifying sensible tyre sizes you can avoid the massive over-specification of the speed rating...which won't help the weight or flexibility (ie. comfort) of the tyre. Also, most tyres in the 245/40R19 size are XL which again won't help the flexibility (ie. comfort) or the tyre. Another advantage of 17" rims instead of 19" rims is a large weight saving...perhaps 2.5kg/rim or 10kg for all four rims...or 12.5kg for all five rims if you carry a spare...and that applies to either steel or alloy rims because so called "lightweight" alloy rims tend to be just as heavy as steel rims. Continental AllSeasonContact 2 215/60R17 96H (Euro label B B 70dB) https://www.camskill.co.uk/m140b0s8016p221935/Continental_Tyres_All_Season_Car_Continental_Conti_All_Season_Contact_2_215_60_R17_96H_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_70dB Michelin Primacy 4+ 215/60R17 96H (Euro label C A 69dB) https://www.camskill.co.uk/m54b0s3735p209219/Michelin_Tyres_Car_Michelin_Primacy_4%2B_215_60_R17_96H_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_69dB Alcar 9021 6.5Jx17 ET38 5/112 57.1 steel rims (alloy rims from the Kodiaq also available) https://www.mytyres.co.uk/rims/rim-selector?type=steel&vehicle_ids=639488607098401904%3A%3A0001 Another oversize option for the Karoq could be 235/55R17 on the standard 7Jx17 ET45 5/112 57.1 alloy rims. Michelin CrossClimate 2 235/55R17 99V (Euro label B B 71dB) https://www.camskill.co.uk/m140b0s9294p208522/Michelin_Tyres_All_Season_Car_Michelin_Cross_Climate_2_235_55_R17_99V_TL_Fuel_Eff_%3A_B_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_71dB 7Jx17 ET45 5/112 57.1 alloy rims (from Karoq) https://eshop.skoda-auto.cz/cs_CZ/alu-kola/c/alloyWheels?sort=priceAsc&q=%3AscoreDesc%3ArimDiameter%3A17%3AcarType%3AKaroq%2B%282017%2B%29# Yeti owner who fitted oversize 235/55R17 to the standard Yeti 7Jx17 ET45 5/112 57.1 alloy rims

I'm no electronics expert, but if you were to just change the front brakes there wouldn't be another VAG model (current Polo MK6 generation) with the 312x25mm front and 230x9mm rear combination.