I didn't mention nascar.
taller sidewall tires will be better for road inputs like potholes than a smaller sidewall. The width could provide some additional cushion as well.
Sidewall geometry has little effect on wear. Wear can be accounted for with a 95% confidence interval using a math model involving only tread pattern geometry, tread compound stress*strain @ break, unloaded tire tread shape geometry, load, lnflation, & alignment.
I went to the Tire & Rim Association. They dictate what bridgestone and every other US market tire roughly looks like. According to their calculation, a 245/45R17 is acceptable on a 7.5J wheel. a 245/40R17 requires an 8J wheel.
It seems like this question is all the hang up.
Quote:
Whats the widest tire you can put on the stock 7.5" wide wheel and be safe?
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According to T&RA its 245/45R17, but I'm asking for some experienced input from peers.
Also according to T&RA 255/50R17 is the minimum aspect ratio for 255mm section width on a 7.5J wheel.