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jmatta · 12-18-2008, 02:36 PM

265/40s have too high of an aspect ratio (sidewall to width). You would want 265/35s on an 18 inch wheel, so that you don't have a large bulging sidewall. Just be careful of holes in the road.

I'm presently running 235/40s up front and 265/35s on 18 inch wheels. Next time, I think I'll stuff some 275s or 285s on the rear.

12-18-2008, 02:36 PM	#2
jmatta Registered User Join Date: Nov 2007 Location: Chicago suburbs Posts: 1,675	265/40s have too high of an aspect ratio (sidewall to width). You would want 265/35s on an 18 inch wheel, so that you don't have a large bulging sidewall. Just be careful of holes in the road. I'm presently running 235/40s up front and 265/35s on 18 inch wheels. Next time, I think I'll stuff some 275s or 285s on the rear. __________________ JGM 2002 Boxster S 1973 911 Green FrankenMeanie PCA DE Instructor circa '95 Last edited by jmatta; 12-18-2008 at 02:38 PM.