^^^ Chris am confused as always thought the larger the wheel the harsher the ride (since you'd have less rubber to act as a cushion)?
Coupled with the facts that:
1) Tyre choice is at least halved when you move up to 19's and furthr halved at 20, so there's a lot more choice at 18
2) Larger alloys are invariably heavier increasing unsprung weight which robs you of power*
Is the reason I'll not go larger than 18
* e.g a Oz Ultraleggera in 18" weighs 4kg less than the lightest Ronal meaning an extra 16kg of unsprung weight, I had read somewhere that each additional 2kg robs of 1 x BHP so you'd be at running less power. I had (albeit on a lightweight sportscar) Volk TE37's in 15" these weighed....wait for it...10lbs a corner!!
By comparison of a like wheel size...say 18" a Konsei K1 weighs 7kg/16lbs whereas an 18" Ronal weighs 18kgs, so we're talking an extra 44kg. I even looked at rubber and found a difference of 3kg's on some rubber compounds with Eagle GS-D3's being around the lightest.
Admittedly we're not driving sportscars and such light alloys probs wouldn't take the weight of an A6
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