Im running 33x12.5r15 right now, but hopefully will be stepping up to 35s soon. And I tinted my lights using this stuff called nite shades. It comes in a spray paint can, and you just spray it on like spray paint. Really easy to use. you can pick it up at advanced auto parts for sure and possibly another auto parts store... plus I like the fact that you control how dark you want it by how many/how thick of coats you put on the lights.