[rotten77]

Can I run 235/45/18 size tires on my 07ss stock rims without any problems?

 

[AlfredoSmith]

Tire Size Calculator - tire & wheel plus sizing

Im going to guess YES, but run your specs thru this to make sure... it tells you the %difference in wheel height vs. Stock, and tells you if its safe or not. it also tells you how many MPH your speedometer will be off (if at all).

EDIT: according to the calc, your tires are going to be too short. Your speedo will read 62 when you are really going 60.

In terms of fitment, you should be fine, but I dont know why you would want to go lower profile... youll lose a little comfort and sidewall height. If your getting them used for a great deal, they should fit fine.

 

[rotten77]

Yea I can get them as take offs with rims that I can easily sell and maybe even come up on top

 

[ImpSS07]

Yes they'll be fine. I'm running 245/45's on a stock sized rim with no issues other than the speedo being off by 2mph(gps'd it to make sure).