Originally Posted by BruceH

Discount tire direct is the only place I've found that has them. About the same price for those or the 555r's. My experience with 555r's is that they spin. At least the 275's did when I was at 436rwhp. However, I was also thinking that maybe with a 305/40/18 the taller tire and added width might help to hook. That's why I'm looking for informed opinions because right now it's a crapshoot. I could also go with 305/45/18's but I think a 29" tall tire would be detrimental. It would make my 3.55 gears perform like 3.27's compared to the 27" tires I'm running now.