Quote:
Originally Posted by Fast Guy
I think it's probably due to change in gearing with the 20" wheels. I'd imagine they'll be a fair bit bigger than the 14"s in diammeter, so your engine should be doing lower revs for the same road speed. The higher psi may contribute slightly due to the reduced friction.
(sorry for the late reply)
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why do people think bigger rims = bigger tires? this isn't a sliding scale where 185/60R14 is equal to 265/60R20. The goal is same tire/rim overall dimensions. The 14" overall is 23 inches. To match that on a 20" rim you'd need a seriously small sidewall, like 15. hmm, I could run a 195/20R20. 205/15R20 puts me a hair slower...ah! 235/15R20 is the perfect fit. Now, if only I could make a 235 fit in the wheelwell where a 205 rubs....
thank you for the entertainment, I'm now going to try and find a 20" rim that's 6.5" wide instead of 9-10". should be a challenge worthy of my time.