[strictlypersonl]

Originally Posted by vatdevil

Your are missing the point. Choices for high performance COMPETITIVE DOT street legal radials are almost nill for 15s. Yea, there are the ungodly priced Avons, but the new generation tires will easily outperform them too. There are some decent drags radials, but have fun with them on high speed cornering. Tires choices are driving the larger wheel size. Sure, unsprung weight matters some, but keeping all four wheels planted trumps unsprung weight in my opinion. My lap and autox times greatly improved when switching to 18s...not because of wheel diameter....but because I could run better tire compounds and much wider (285/335) tire widths.

Looking through the choices in 335-35-17 tires, the prices are quite comparable to the Avon 15-inchers. Maybe they're both "ungodly".