Quote:
Originally Posted by StraightOuttaCanadaEh
I run 225/40/18 size wheels on my car. My rims weigh 21 lb according to Enkei and I am very tempted by the reduced weight of a wheel like RPF1 for example. Almost 5 lb, IIRC. However, wheels are highly individual and subjective, and I would still want to fill out the wheelarch. I really don't like the tiny wheel look. Having said that, I checked out tire rack for tire weights and used a Michelin Pilot Sport 4S for this comparison. I specced it in 225/40/18 and got 21 lb. Then changed it to 245/45/17 (sufficiently meaty?) and got 24 lb. That would almost negate the weight savings. Are people aware of this? Are these weights provided by tire rack correct? Cause that would take a 5 lb per corner advantage and cut it down to 2 lb...
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Are you comparing a 225/18 setup to a 245/17 setup based only on weight? The reason for a wider wheel and tire is to provide more mechanical grip (all else being equal) for cornering. If you don't care about cornering and you only care about looks, then why would you care about weight in the first place? I think this one just comes down to whatever you care about the most, but if we're talking performance around a track, 17's are generally known to have the advantage.