hot tires - psi. increase after a couple track laps?
10-17-2010, 02:12 PM
#31
Addict
Rennlist Member
Rennlist Member
On a cold (+/- 50F) morning I will start out 4-5lb below my hot target and I usually have to bleed air out when I come in after a 20-30 minute session even then. If the day gets warmer I will be bleeding air out after the next two sessions and by afternoon will be set. If my tires are at a consistent (but low) pressure the next morning and the ambient temps will be the same I don't touch them and usually they are spot on by the second session.
10-17-2010, 10:34 PM
#32
Rennlist Member
To the OP, 911Jetta,
How was the DE? And what pressures did you run?
FWIW, I start the day at 32 all around (cold), and then bleed down to 36 hot after each run... This has been the recommendation of almost every instructor I have had, and seems to work well for me.
How was the DE? And what pressures did you run?
FWIW, I start the day at 32 all around (cold), and then bleed down to 36 hot after each run... This has been the recommendation of almost every instructor I have had, and seems to work well for me.
10-18-2010, 12:10 AM
#33
Rennlist Member
10-18-2010, 02:49 PM
#34
Rennlist Member
Thread Starter
Steve,
Thanks for asking. I had an incredible time, see this post:
https://rennlist.com/forums/showthre...ferrerid=19642
I ended up keeping it at 32 PSI front, and 33 PSI rear. I drove 4x30 minute sessions, so I had a couple opportunities to check the pressure but I forgot each time. Everything worked so well on the car...I just spent time focusing on my driving and then "mentally" recovering. Too much going on for this first-timer! Wow, what a day...
Thanks for asking. I had an incredible time, see this post:
https://rennlist.com/forums/showthre...ferrerid=19642
I ended up keeping it at 32 PSI front, and 33 PSI rear. I drove 4x30 minute sessions, so I had a couple opportunities to check the pressure but I forgot each time. Everything worked so well on the car...I just spent time focusing on my driving and then "mentally" recovering. Too much going on for this first-timer! Wow, what a day...
10-18-2010, 05:15 PM
#35
Nordschleife Master
10-19-2010, 08:39 AM
#36
Three Wheelin'
I'm running 32psi front and 38 rear cold on RE11a street tire. I checked my pressures after each 30 min run at Mid O and found an even 4 lb increase in pressure all around.
