18x9.5 gramlights with a 255 35 tire for autocross/canyon runs??

 

Offset? and are your fenders rolled?

 

I believe +38 and yes they are rolled a bit

 

You should be fine with -3 camber all around

 

Or is 245 35 too much of a stretch

 

What does rolled a bit mean? They need to be flat. 245 is fine on a 9.5 inch wide wheel.

 

You will have to go 245 up front and pull your fenders with at least -2.5 camber to get those to clear, and -3 camber in the rear to have a chance at getting a 255 to work, but it will be tight. If you have to exceed -3 in the rear to get the tire to clear then your better off with a 245 and less camber. After -3 in the rear there is progressively diminishing returns on grip and handling and that's on the track where the tire is being pushed to get the tires up to even temp, on the street even less camber is more beneficial.

 

It'll be a little more tight than you're looking for with "just a roll," based off my experience running the same width/offset/tire setup.

It's a little bit more work than what it sounds like. The fronts would need to be pulled quite a bit and running probably -3.5. The rears would need to be pulled several mm, and you'd have to do a lot of smoothing / cleaning up around the rear bumper lip and attachment point. I'd also be willing to bet you'd still have to run more than -3 in the rear without some professional pulling with a 255. There are a few guys out there running 9.5jj +38 with 255s all around, but any one of them will tell you that it takes professional body work for everything to clear sufficiently for a canyon setup...despite the fact that it looks OEM from the outside.

My suggestion is to run a 245 personally (unless you're prepared for the body work aspect), and it'd still be a good setup overall. I don't mean to deter you from 255's if that's what you want to do, just be prepared to spend some more money than just wheels/tires.