Originally Posted by longodj
If I could make one recommendation, it would be to disable the JB3 on track. Until you get to the higher run groups, the best way to drop time is to tighten the screw behind the wheel. I have a completely stock engine and have blown by Corvettes, M3s, etc. in the same run group. Switch out those tires for something like 245/40/17 all around on non-RFT like Bridgestone Potenza RE01R or Dunlop Direzza Z1 SS. Good job on getting it on track though, keep it up!
I agree. My JB2 is off. 245/17 all around. The Z1's are a huge step up. The only thing passing me was the odd S5 and M3's.