What is the biggest tire i can put on a 17x8 wheel? Thanks.

 

245/45/17 is what would be recommneded, but Im sure a 255 can squeeze on there

 

He is exactly right - but there really isn't any sense in squeezing a little bit wider tire on there just for the sake of having it. It's gonna go outside the limits of the tire and wheel manufacturer recommendation probably, and isn't enough difference to really matter from a 245.

Although, my buddy bought a 17x8 wheel set from AFS and they came with 255's...

 

*gets flame suit on*

i have 275/40/17s on 17x8's

 

He isn't all there in the head either...