Tire Air Pressure
#1
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I noticed yesterday that the manual calls for air pressures of 33 PSI front and 39 PSI rear for 19" tires. The sticker on the driver's side door jamb on my 997S calls for 34 PSI front and 40 PSI rear. These are both for 2 people in the car and no luggage. I wonder what changed.
#5
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Originally Posted by MJones
The product info guide lists the tire pressures more precisely as
33.36 F
39.16 R
33.36 F
39.16 R
Front: 2.3 bars x 14.503775 = 33.35868 psi
Rear: 2.7 bars x 14.503774 = 39.160187
So, whether you follow the manual or the door jamb sticker, you shouldn't feel any difference.
#6
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I keep my pressures around 35-36 psi in the front and 43-44psi in the rear. I do carry passenger(s) often. Mine are 19" rims, classic style, 997S. Check your tire pressure often at least every 2 weeks (weekly is better). A good air compressor in the garage is not a bad investment and can be used for many other things besides adding air to a low tire (the one that comes with the car is ok to add a couple of pounds occasionally, but I wouldn't use the thing on a regular basis as its really designed for emergency use. Be sure to bring a book if your tire is completely flat).
Last edited by gradyex; 03-10-2005 at 10:34 PM. Reason: forgot model description