Originally Posted by elp_jc
A blanket statement like that is simply not true. Furthermore, performance has MANY aspects, so depends what you're talking about. And finally, a HUGE factor is surface, where some might benefit 18s and others 19s. Too many factors to throw a blanket statement like that
For starters, the stock 18" setup is HEAVIER than the 220 setup, but lighter than ZCP. However, ZCP wheels are wider, with suspension slightly stiffer, BUT same tire sizes; which setup is better?
Forged 18s lighter than 220s would be a better argument, but they still wouldn't be as good as 19s in every surface. Just look at every modern supercar, and none I remember has 18s
; there must be a reason.
Bottom line is for the OPs problem, he'd benefit the best with a forged set of 18s IMO. Good day gang.
I full agree here.... I saw significant performance increase at road atlanta with 19's over 18's. Same rubber, same day - back to back runs with 19's with slightly wider rubber. less sidewall means less tire squirm - simliar to having stiffer springs - less time wasted in transition.
Originally Posted by immiketoo
The reason is that premium race/performance rubber is cheaper in 18 that 19. Thats about it.