Hi guys, 
Need some advice will the mk3/4 19" SKODA OCTAVIA VRS ALLOYS XTREME WHEELS 5X112
fit onto my 2011 mk 2? Nut spacing and the hub centre the same but I’m just thinking wheel arches? Offsets? 
Rear should be fine but it the front I’m worried about? 
Advice please.

The Octavia MK3 uses XTREME 7.5Jx19 ET51 5/112 57.1 alloy rims.

 

The Octavia MK4 doesn't use EXTREME alloy rims because the offset is not correct. The Octavia MK4 uses 7.5Jx19 ET48 5/112 57.1 rims. Also note that the Octavia MK4 uses bigger outside diameter 225/40R19 rather than the 225/35R19 on the Octavia MK3.

 

The Octavia MK2 uses 18" rims with a specification of 7.5Jx18 ET51 5/112 57.1, so you could use the 7.5Jx19 ET51 5/112 57.1 EXTREME rims on the Octavia MK2.

 

Bear in mind, that the very low sidewall height of the 235/35R19 tyre size makes the tyres and rims very susceptible to pothole damage.

 

Perhaps look at non-standard 235/40R18 tyres fitted to 7.5Jx18 ET51 5/112 57.1 alloy rims from the Octavia MK3. Compared to the 225/35R19 tyre size, the 235/40R18 doesn't just add 10mm to the tyre width but a massive 20% to the sidewall height. So when you hit a pothole, the tyre will provide a lot more cushioning and resistance to pothole damage.

 

Another thing to bear in mind is protection from kerbing damage. The sidewalls on a 235/40R18 fitted to a 7.5J rim will bulge out a similar amount to a 225/45R17 fitted to a 7J rim, and will therefore provide a similar level of protection from kerbing damage.

 

7.5Jx18 ET51 5/112 57.1 alloy rim

https://eshop.skoda-auto.cz/cs_CZ/alu-kolo-gemini-18-octavia-iii/p/5E0071498G+FL8

 

ETRTO recommended rim widths

225/35 7.5-8.0-9.0
235/40 x.x-x.x-x.x (7.5-8.0-9.0 would be logical but ETRTO's 8.0-8.5-9.5 recommendation is not logical)
245/45 7.5-8.0-9.0

 

As you can see in the chart below, these two tyre sizes have a similar outside diameter. When the 235/40R18 tyre size has just 2.55mm of tread wear, it will have exactly the same outside diameter as a new 225/35R19.

 

Outside diameter of tyres

225/35R19 640.1mm

235/40R18 645.2mm (+0.8% larger compared to 225/35R19)

 

Continental AllSeasonContact 235/40R18 95V XL

https://www.camskill.co.uk/m141b0s10013p152848/Continental_Tyres_All_Season_Car_Continental_ContiAllSeasonContact_Continental_Conti_All_Season_Contact_235_40_R18_95V_XL_FR_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_B_NoiseClass%3A_B_Noise%3A_72dB

 

Edited 30 July, 20232 yr by Carlston

Thank you 

Should be fine, I have 8j ET37 on my vrs and they sit quite nicely under the fender

Edited 3 August, 20232 yr by siiiim