Tires

[Michael Rush]

Is it ok to put 245/45r17s in front and 285/40r18s in the back.
It's a 94 cobra, on sportline lowering springs. I had 245/45r17s all the way around before with no rubbing whatsoever.

 

[jozsefsz]

That depends on your wheels (width / offset), whether or not you're running the quad shocks, and to a small degree even the tire brand (some bulge more than others). I had 245/45/17's up front for many years on the stock wheels with no issues. I've never run 18's in the back, but 315/35/17's fit just fine on a 17x10.5" wheel.

 

[Michael Rush]

That depends on your wheels (width / offset), whether or not you're running the quad shocks, and to a small degree even the tire brand (some bulge more than others). I had 245/45/17's up front for many years on the stock wheels with no issues. I've never run 18's in the back, but 315/35/17's fit just fine on a 17x10.5" wheel.

So I have 18x9s in the back. I am not sure of the offset, they fit fine with the 245s on there, but those tires are stretched. I have 17x9s in front with 245/45r17, and I figured I go with 285/40r18s in the back because they will be tall enough, cause right now they skinny compared to the front. No of any issues with running 17shoes in front and 18s in back.