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Old 10-18-2015, 06:46 PM   #1
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another dumb tire pressure question

Should you keep increasing the "cold tire" pressure as temperatures drop. I know 85 psi at 70 degrees is different when the air temperature is 50 degrees but after a few minutes of driving the psi begins to climb. I had a blow out a few years ago so correct air pressure is always a concern for me. I appreciate any advice.
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Old 10-18-2015, 06:54 PM   #2
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Good question. I'm interested in replies. I always bring to psi before any trip without considering ambient temp. And check frequently during trips.
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Old 10-18-2015, 07:44 PM   #3
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Each morning before driving, you should check pressures and air up as appropriate. You're right that your 85psi tire at 70 degrees may be 80 psi at 50 degrees.
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Old 10-19-2015, 07:58 PM   #4
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This how we import (smuggle) cold northern air into Florida. We fill up with 94 psi in the cold north and have to vent the air as we arrive in Florida....
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Old 10-20-2015, 01:06 PM   #5
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Quote:
Originally Posted by ependydad View Post
Each morning before driving, you should check pressures and air up as appropriate. You're right that your 85psi tire at 70 degrees may be 80 psi at 50 degrees.
X2
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Old 10-20-2015, 03:20 PM   #6
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I add PSI as the temp drops to keep my tires above 80 PSI. They do go higher as we travel but never too high.

Bill
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Old 10-20-2015, 07:19 PM   #7
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I also have always filled tires to tire manufacturers recommendation on the tire it will state a psi cold fill it to that and enjoy your vacation. I have never had a blowout towing boats or travel trailers.
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Old 10-20-2015, 08:18 PM   #8
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Check pressure in morning. Be sure to fill to max psi. Just remember that "ST" tires are rated at a max of 65mph at max psi. Most 15 in. Trailer wheels are rated to 50 psi. Three brands of 16" tires are rated at 75 mph with 10 psi of added air pressure. Heat build up is quickly built up at speeds over 65mph and psi below max. This is what causes most blow outs.
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Old 10-20-2015, 08:46 PM   #9
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tire pressure

Over inflation does not blow out tires; underflation always will if driven that way very long.
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Old 10-21-2015, 03:19 PM   #10
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I have blown out many, many riding lawn mower tires due to not having a gauge and the tire having a slow leak. My guys almost make them rock hard to try to get the day out of them. But after cutting a acre or two they heat up and I get the call "a blown tire".
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