Hey everyone I'm gonna get 18 inch iroc Tim's for my Camaro and I was looking at tires and found some 275 40 18s. My question is would that fit in the front with the standard iroc width being 8.5 I believe...any help is appreciated thanks

 

The stock diameter is "about" 25.75" tall. A 275/40/18 is about 26.75". I might recommend going with a 275/35 instead of a 275/40.
As for width, a 275 will be really close to fitting with no issues (assuming you keep the overall diameter stock). You might need a .25" spacer to clear the tie rod. Some need it, some don't, but running a 275 is pretty common.

What is the wheel width you're buying? I though most the 18's were only 8" wide, which wouldn't be ideal for a 275 tire. Maybe there are more options out there these days.

 

I wish it wasn't 25$ for those tires haha 275 35s are more expensive then 275. 40s

 

It may fit.....but my guess is that it won't, at least not up front. Some guys get some tire rubbing....some run into the tie-rod. That may not be an issue with an 18" though. It's hard to say. Thus the fun of fitting different sizes.

 

Whole reason is I'll be doing a big brake kit upgrade and I need bigger rims...also fatter tires haha