NT-01 track pressure suggestions

[longdaddy]

Stock wheels, 275 front, 315 rears. What kind of pressures (cold) should I start off with and where should I try to keep them (hot) throughout the day? Looking not to use the tires up too fast but still have nice turn-in and good rear traction.

[DHois]

With stock tires/wheels and alignment, I've used 40 psi front and rear (hot) and measured temps after hard runs at Thunderhill that showed proper temperature differentials across the tire. The temp readings did show that the stock alignment could be improved wih more negative camber, as the outside edges were the hottest. I've seen other guys run around 30 psi at autocross, but I can't speak to that.

If you are running a DE track day, you'll be fine, but if you have a means of measuring the tire temp after a run, you can tell if you are too light or too heavy on the pressure. You'll want the center of the tread to be between the inner and outer tread temperatures. The closer the temps across the tread, the better, but with stock setup, it won't happen.

[DHois]

Check out the DJWorm reply to this same qusestion in the C5 Z06 Pit Road forum on 9-5-06. Very good advice and information there.

[Tourmgr1]

I can confirm the 40 psi hot numbers given above.
I have 1.9 deg neg front and 1.3 neg rear camber.

[ra455ta]

How are they as far as lasting?

[longdaddy]

they took a heavy beating during my first session, but my alignment needs to be changed (heavy front outside wear). on the rears where the wear is even, it looks like they can easily do another 7+ days.

[Electron Blue]

I was at Pacific Raceways today with the Toyo RA-1's. I started off with 32psi cold and they built up to 40psi after the first session. Halfway through the second they started getting slick so I got off the track. They were at 42psi so I let some air out. Big difference. At 32psi the grip is unbelieveable. At 40psi it was very good. At 42psi, no way. I had the rear wanting to come around on me in turns 2 and 8 at 80mph. Summary, I agree with the 40psi hot numbers but want to try 38 and 36psi hot next time for comparison.