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Unread 05-21-2010, 03:12 PM   #1
Thunderstrike
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Need to re-pressurize winter tire air pressure to summer

I had been driving 79 mph for eight hours, on my vacation trip to San Antonio from Montgomery, when tire pressure warning light came on. My immediate thought was a tire going flat.

I exited interstate and checked tire pressue. All four tires read 39 lbs. Then I realized the warning light may be warning me of high pressure, so I aired it down to 35 hot pressure.

The only thing I can think was winter cold tire pressure reads much higher at summer temperature, thus the need to repressurize winter/summer time.

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Unread 05-21-2010, 03:15 PM   #2
WhiteMtnJeep
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Correct. A temperature change of about 8-10 degrees can equal about 1lb or so change in tire pressure.
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Unread 05-21-2010, 03:24 PM   #3
Colockum
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Yeah it happend to me last month (except i did not have a fancy warning system). I was at 43ish psi, hope I did not do too much damage.
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Unread 05-21-2010, 03:40 PM   #4
JeffinWesternWA
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per xysler owners manual 12'F = 1lb on the stock Jeep tires, so check pressures (cold) MORE often in the fall but, at LEAST 2x a month is good practice
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Unread 05-22-2010, 06:53 AM   #5
Ron Burgundy
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Good advice gents. Obama would be proud, haha.
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