How do you think a 255/40/18 would look on a 18x9.5? i want a nice stretch but not too much

 

umm...its barely if any...really depends on the type of tire. some tires have a naturally angled sidewall to begin with, some are very straight and square.

I'm running 245 on a 10"...I think it's a mild stretch using Falken Fk452's.

 

235/40/19 10 inch wide nice stretch careful they dont mess up your tires or rims i run 56 psi cold on my stretchies

 

yeah with no prolbems