pressures seems better 35/33 over 40/38, F/R. Then again, the lower temperature day was about 35 degrees cooler in temperature. Tomorrow is Laguna in the high 50s and I'm starting at 36/34.

Your opinion?

Lastly, why's your car parked in your sig?


Mike S

"pressures seems better 35/33 over 40/38, F/R"

Hot or cold? I'm going to be picking up a set of the RT-615s for this season's events and daily driving.

FWIW, I always go a bit higher with my rear pressures in my AWD Mitsubishi, street and track. Starting at 34.5F/36R cold and making minor adjustments to about 41 all around when hot has been working for me at the track.

<center><img src="http://pictureposter.audiworld.com/63138/track_tires_006.jpg"></center><p>But if temps are not extreme in either direction, I usually end up keeping them right there.

My RT 615's are 245x45x17.

be predictable but sensitive to pressure. In 80 degrees they became slick after a half session. Then I tried lower and they were fine. In fairness, I had them on the high side at 40 because I had to run my PS2s at a high pressure to keep from destroying the sidewall. Nothing else to compare them to at this time.

As for the sig...uhh, really high speed film?

that races in ITB had these on his R32 and found the lower pressure better, just like deeno20 states. I like to run a softer rear pressure to make sure the back end stays planted in case I run out of talent. That and a little softer setting on the rear dampers helps make for a predictable ride.

I try to run them at 38/40 and adjust according after each session.

In the morning the next day, IIRC, the 215s were sometimes down in the upper 20s -- usually on which ever front I leaned on the most. I usually rotate that tire to the opposite back that is often the highest. and, adjust pressures accordingly.