 Tire Pressure in Rain/Wet |
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| D1A3 |
 May 15 2010, 08:41 AM
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#1
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Gruppe Neun Vierzehn Südosten  Group: Members Posts: 362 Joined: 3-June 04 From: Atlanta, GA Member No.: 2,152 Region Association: South East States  |
I'm doing the local PCA AutoX this weekend and they are calling for intermittent thundershowers. I'm running a stock 914 with street tires. Usually I run my pressures around 34-35 psi. I'm wondering how I should adjust them if it is raining or just wet? I've got a solid deep tread on these and they are 205/60/15's. Is there a general rule to follow?
THANKS! |
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| PlaysWithCars |
May 19 2010, 10:27 PM
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#2
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Senior Member Group: Members Posts: 524 Joined: 9-November 03 From: Southeast of Seattle Member No.: 1,323 Region Association: Pacific Northwest 
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General rule is to use more pressure in the rain, but generally refers to tires w/ little to no tread so the profile of the tire is more rounded to push water out to the side. For street tires w/ good tread, its not so critical. Depending on sidewall stiffness, I'd say your playing in the right ballpark with your pressures.
Good luck and have fun at the autocross. |
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| Joe Ricard |
May 20 2010, 05:17 AM
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#3
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
After your 1st run @ 36 PSI make a radical jump to 40 and see if it's better. Heavy rain with puddles = more pressure, just a wet or damp surface you can run them normal.
225/50-15 with 1900 pound car Hankook RS2 likes 36-38 PSI. |
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