I bought these wheels and tires to go on a frame I am building with c-4 suspension to go under my car after completion. The other day I decided to see how they would look on the car. The back ones are 335/30/18's on an 18x12 rim with 6" backspacing and the fronts are 275/35/18's on an 18x10 rim with 5" backspacing. The front one actually bolted on and sits in the fender really nice. The valve core just kisses the tie rod end with the cap on but clears with the cap off. To get the back ones to fit I had to take the parking bracket off and it still hits the trailing arm just before it tightens up on the hub. It sits too high on the back but I cant roll it back and forth to get the rear suspension to settle back down so the rear looks a little goofy still. If I put my old tires up against the new ones the height is real close to the same height. I was worried that the 18's might be too short but I think they will be acceptable. The wheels are Boyd Coddington F-22's.