Re: Classic wheel fitment
Comparing to my wheels/tyres which are 8x18 and 225/35x18 ET51 Toyo T1-R, the rough calculations work out to be as follows :
8x18 ET51 will protrude 50.6mm from hub face.
7.5x18 ET42 will protrude 53.25mm from hub face. Therefore your wheels stick out 2.65mm further despite being 7.5 inch rather then 8 inch
If you then take into account the tyre tread width of 225 vs 215.
An 8 inch rim is 203mm wide, so the 225 overhangs front/back by 11mm (approx, as it actually marginally wraps around).
A 7.5 inch rim is 190mm wide, so the 215 overhangs front/back by 12.5mm
This all roughly equates to :
8x18 ET51 225/35x18 protruding 61.5mm from hub
7.5x18 ET42 215/35x18 protruding 65.5mm from hub
My wheel/tyre combination does rub/buzz very slightly over large compressions.
Car is a UK spec running eibach springs.
It does still have the rubber lip on the rear arch which, if removed, could give me the little extra clearance required. but only about 1mm ceratinly not 4mm.
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