I bought some Saleen 18 inch chrome rims and I need to buy some new tires for them. I would like to run Nitto 555r's on the back because I think they are probably the longest lasting drag radial? I was also thinking of running Nitto 555's in the front. Now I was just wondering what size tires I can run. I was thinking 245's in the front, and I was wondering if I could fit 315's on the back? Does anyone know if they will fit? Also if someone can show me a site where I could buy some for a decent price. Also if anyone knows of other drag radials that will last a long time or some better street tires for the front for a decent price.