Ok, so im really interested in some 18" chrome deep dish wheels for my 05 gt...Im looking at americanmuscle.com and I want 18X 10 in the back and 18X9 in the front...however, the rear tires are 275/40-18 and the front are 255-45-18. The sidewalls are a different size, but thats what they have.....is this ok? is it noticable? I know mixing tires isnt usually good, but theyre the same tire, just dif sidewall. I dont want it to look strange after spending that kind of money! Thanks for the help!