cloud9
Gary
What HOT pressures do you find work best? What COLD pressure did you start at to hit the desired HOT pressure? I am taking a set of takeoff PZeros and a new set of R7s to BIR next weekend.
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Will do Adam. Another friend of mine said he likes 38 HOT and airs down if he gets over 40. He starts at LF 31.5 RF 32.5 Rears 29.5.Flyboygsxr said:I'll be at NCM this weekend and I'm going to start at 32 cold and air down from there as the tires warm up and the weather heats up throughout the day. Gary, let me know what you find works best for you.
06mach1 said:24 psi cold start for 305/660's. Hot I believe I was 34 to 35 lbs.
Did you get those temps in the hot pits or paddock? I'm usually only able to get them in the paddock and by then the inside fronts are heating up more relative to the middle/outside due to camber.Wingrider said:Found my Sonoma master sheet from last May with tire temps and corrections I use as my reference where the car was flying and felt awesome. This was 2p after the car has been out on track and all up to temps. Started the day cold with 27 fronts 26 rears @ 7:30a
LF
167 170 177
Pressure- 36.2 Correction to make - none
RF
181 172 159
Pressure- 34.4 Correction to make- none
LR
168 174 169
Pressure- 35.3 Correction to make -1
RR
171 173 163
Pressure- 35.2 Correction to make -1
cloud9 said:Did you get those temps in the hot pits or paddock? I'm usually only able to get them in the paddock and by then the inside fronts are heating up more relative to the middle/outside due to camber.
ThanksWingrider said:Paddock rolling directly into the garage. Distance wise at Sonoma it wouldn't make much difference but about 50 feet and about 20-30 seconds.
I'll add that I was running about -3.2 camber at the time.
Good deal thanks. So is that higher than you ran the R6s? I typically start around 31-32 COLD on R6s to end up in the low 40s.ArizonaBOSS said:Yes, basically take those numbers from Pirelli and reverse them, since those are Porsche guidelines.
I don't know what I was coming in at Hot on the P-Zeros but you will want to start 24-26 psi cold depending on tire location. Tires always felt great that way and typically never fell off towards the end of a session.
R7s you are going to want to be in the 33-35 range COLD. Maybe even a pound or so higher due to the greater weight of your car vs. mine.
Any idea what kind of HOT pressures you end up with Logan?roadhouse said:I always start 27 cold all around for my Pirellis. Set them first thing in the morning before the sun is up and then I don't touch them the rest of the day.