LS4 Performance - tire.

Any experience with Cooper xeon/zeon x2s tires. How about 275/40/18 on stock gxp front wheels

No experience with the Coopers, but I'll vouch for the 275/40R18 Firestone Firehawk Wide Oval Indy 500s on stock wheels. They are pretty cheap and have really good traction. I cut a couple tenths off of my 60' with them compared to Goodyear Eagle F1s.

Thanks. They are used about 5/32. They want 90 bucks for the pair. If they will fit that's half the battle