997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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20" wheels air pressure

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Old Jan 10, 2012 | 08:42 PM
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What PSI did you end up running?
 
Old Jan 10, 2012 | 08:46 PM
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how many psi did you end up running Fand R
 
Old Jan 19, 2012 | 12:45 PM
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So I have a similar question on my 07 TT. I'm running 245-30 and 325-25 on 20" wheels. Based on your recommendation I should be at 38 and 46 psi? Seems high.

Hopefully tirerack crew can chime in.
 
Old Jan 19, 2012 | 01:02 PM
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i use 38 -40 on mine
 
Old Jan 20, 2012 | 03:58 PM
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I have been running partial load, summer tire inflation pressure 33/39.

It's worked well for my 20" Rinspeeds.
 
Old Jan 27, 2012 | 04:06 AM
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What about semi slick tires ??? I have Pirelli Pzero corsa II system (the new one ) I think 3+ psi for rear wheels is WAY too high...
I use 2.2 cold for front and 2.7 cold for rear... Too low ??? If i see more than 3.0 back when is hot the car is not so stable...
 
Old Jan 27, 2012 | 11:52 AM
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Guys so I still have some questions on this topic. Porsche recommends 36 and 44 psi at cold, so on average I see a 2-3 PSI shift from cold to hot. Factoring in this shift and running the recommend +2 psi for 20" wheels would put my hot temp PSI at 41 front and 49 rear, with a max PSI of 50 for the tire this does not seem right. Keep in mind all of my measurements are coming from TPMS. Thanks.
 
Old Jan 27, 2012 | 02:00 PM
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I just keep mine at the pressure listed on the door and it's fine (I have 20" PS2s)
 
Old Jan 27, 2012 | 02:14 PM
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Originally Posted by raclaims
I just keep mine at the pressure listed on the door and it's fine (I have 20" PS2s)
Thanks for the input.
 
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