You stand to pick up a little time in your 60. Try airing up to around 18 PSI. Also the 555R's are not the best tire in the world for higher horse power cars. If you can afford them pick up a set of M/T DR's i think you will be pleasantly surprizzed with the improvement. Also try not to launch so hard at 4K your just spining and not going any where.

 

i hope you realize this thread is two years old right???

 

^^^ hahaha