So I'm running 225/45ZR17 (BFG G-Force T/A KD) on 17x7 rims. The shop that installed the tires had them inflated to 40psi (max is 44psi for these tires). The ride was quite rough, but similar to the ride I was getting with the stock rims/rubber. I did however see a great improvement in smoothness on the highway.

I searched the UBB for "tire pressure" and found many recommendations, so I ended up deflating the front to 32psi and rear to 30psi. I was amazed, to say the least! Wheel spin/hop on launch is hardly an issue anymore, torque steer is down, cornering feels tighter and the car goes where I steer it rather than where the road slants to.

Is anyone running with a similar setup? Is this a good setup to run at the track (1/4 mile) - what do you guys run with? And what about treadwear - the higher pressure I assume would have caused the tread to wear quicker and less even, correct?

Those Pressure are probably much better for the Road. They are probably going to be too low if you ever do some Road Race/Lapping. Probably more like 42 up front and 39 at the Back.

1/4 miles Runs will require other Tire Pressures. Paul S has those Gumballs and have done some of Both. Might have some numbers for you.

At last; I shows that most Tire Shop don't have a clue on how to inflate Tires. They look at the the Max Pressure and sometime Max the Tire Pressure. Their is a Tire Inflation Chart into the Driver Side Door Frame. That is a better way to start and to adjust as required.

Hope this helps.

Ghislain.

Rob, I have the same tires and I use 44psi each corner for lapping and 30 psi for drag racing. Although they are very sticky I can still spin them with out a problem.