Hello, come February-ish I will have my 2012 GT Hellion twin turbo'd(around 600rwhp to the tires) and I have been going back and forth with just getting new tires for my 18x10 rims or trying to snag new rims also. Currently I had decided on the nt555r on 305/40/18, the car is my daily in the good months and I drive 70 mile round trip for school most days of the week so the nt555r seems like best for me. I know the tire would be better suited on a bit bigger of a rim but if i stay 18in I will stay with these rims. My other ideas have been to drop rim sizes and try for a wider rim but going to 17's and the nt555rs throws the speedo off by 5 and is 315s, or I am willing to drop to a 15in rim but for the nitto is a 325 which seems too big to me. So I am just looking for idea/suggestions aside from the shop doing the work(he is fine with me staying on 18x10 with the nt555 305 but I havent asked him about changing from those as I feel I need to know my best options before presenting to him). Thanks!