I placed an order at the tire rack last week for Sumitomo HTR Z II 275/40/18 (for the rear) and 255/45/18 (for the front) tires. A guy from the tire rack called me with an issue about the tires. He said that with the fronts, they would be about an inch higher than the rears. Is this correct? Is there a drastic issue about that appearance wise? Does anyone have the same set up with pics? Anyone know what I should do?Any help would be greatly appreciated because I want to get this issue cleared up ASAP. Thanks.

My car is a 2006 Ford Mustang V6 Coupe and has 18X10 bullitts in the back and 18X9 bullitts in the front.

EDIT: Would it be better to run 245/40/18's in the front than 255/45/18? The middle number means the height of the tire right? What would everyone recommend to me here?And I don't want tires that make my car look like a rice burner that has no rubber at all and is all rim. Thanks guys. I appreciate it.

 

Well the number is set up like this. The 245 is the width of the tire (metric), and the 45 or the 40 is the sidewall, it is that percentage of the width. And from what i gather, they include what tucks in behind the wheel also. But anyway, This explains why you run a 245/45 on the front and a 275/40 on the back. (thats on a 17 inch wheel).

 

http://www.americanracing.com/techce...Calculator.htm

this is a conversion calculator for tire sizes. hope this helps