Originally Posted by rv7
Just out of curiousity, if you are concerned about all out performance, why don't you consider going wider than 225's? How wide are your wheels? I would think that you would be able to fit 235's at the very least. 245's would be even better. I think there are quite a few people running 245's without rubbing and without rolling their fenders.
Ok let me rephrase.
I'm interested in all out performance while staying as close to stock as possible. That's why I wasn't considering other sizes. The new wheels are 18 x 8.
There are the following differences from stock tires size according to this tire size calculator (
http://www.1010tires.com/TireSizeCalculator.asp):
225/40/18
Diameter Difference: 0.44%
Speedometer Difference: 0.434% too slow
Actual speedometer reading instead of 60mph: 59.7
235/40/18
Diameter Difference: 1.7%
Speedometer Difference: 1.722% too slow
Actual speedometer reading instead of 60mph: 58.9
245/40/18
Diameter Difference: 2.88%
Speedometer Difference: 2.954% too slow
Actual speedometer reading instead of 60mph: 58.2