Tire Pressure
05-05-2009, 05:06 PM
#1
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Tire Pressure
I just took delivery of an 09 Boxster S.
The car came with 36 PSI in the front and 40 in the rear. How lo can I go without killign the tread? I dropped it 3 all around so far, and so far the compromise is a bit better on the big bumps.
I thought forsure i had runflat tires, until likemystoppie pointed out i was incorrect and I had regular tires.
Any advice? I had a slight rattle, but it seems takign soem pressure out relieved the little squeek i had with the cup holders.
The car came with 36 PSI in the front and 40 in the rear. How lo can I go without killign the tread? I dropped it 3 all around so far, and so far the compromise is a bit better on the big bumps.
I thought forsure i had runflat tires, until likemystoppie pointed out i was incorrect and I had regular tires.
Any advice? I had a slight rattle, but it seems takign soem pressure out relieved the little squeek i had with the cup holders.
05-05-2009, 05:40 PM
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Look in the glovebox. You will find a book there called the owner's manual. The recommended pressures are listed there. If you don't have one then try 29psi front and 36psi rear.
05-05-2009, 05:59 PM
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05-05-2009, 10:11 PM
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Open the door and look down and you'll see the tire pressure suggestions by Porsche. I found in my 2009 C2S that TPMS was exactly correct. 33/39 by my high-end calibrated Longacre shows as 33/39 on TPMS.
05-06-2009, 05:36 PM
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'06 - 987S with 18's - previously with Contis (OEM) and now Goodyear F1 Assymetrics - for street, I use the 30 / 37 (F / R) cold pressure rec's on the door jam. For track, I keep it more balanced and generally keep hot pressure around 35 / 39 but am still playing with it.
Last edited by acadian_dad; 05-12-2009 at 06:43 PM.
05-11-2009, 08:03 PM
#7
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My 09 S (got it friday) states 32/34 on the door label. Mine were quite a bit higher and really bumpy so I like the little softer ride at 32/34. PS just love the PDK!
