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Z-man Z-man is offline
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Join Date: Feb 2001
Location: NJ, USA
Posts: 8,561
Like they said, 36-38 is a good starting point.

While a tire pyrometer can tell you exactly how well dialed in your alignment and tire temps are, a good seat of the pants way to check is to pay attention to the outer edges of the tires: you want the scuffing to end near the edge of the tread. If the scuffing is over the tread, then you're under-pressured. Not all the way to the edge of the tread, and then you have too much pressure.

Whenever you make adjustments in pressure, only go up or down 2 psi max.

Also: stay with a constant pressure all around for now. Later, when you begin to understand the dynamics of your car, you can vary the front to rear to help balance the car.

Tire pressures vary greatly from car to car and driver to driver: some people like to run the tires at higher temps, others lower. After some experience you'll get a feeling for what works for you. Log your temps in your track log book (everyone should have one of these!!) and pay careful attention to what feels best for you.

Oh, one more thing: a warning: this stuff is pretty addictive, so be prepared!!

Have fun!
1989 944S2 - June, 2001 - January, 2014

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Old 09-30-2003, 05:29 AM
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