Air Pressure in Tires When Towing - Ford Powerstroke Diesel Forum
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Old 07-23-2008, 02:02 PM
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Air Pressure in Tires When Towing

I have Michelins on my truck and I tow a 5th wheel (10K+) from time to time. They'll go up to 80 psi and I usually run with 75 psi all the way around when I AM towing but now I'm rethinking that. Should I go right up to 80 psi and have something a bit less in the fronts - say like 60 psi or so?
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Old 07-23-2008, 03:23 PM
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Safest thing to do would be to set your tires to max PSI when cold. So if your sidewall says 80psi max.... then set them to 80 psi cold.
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Old 07-23-2008, 03:36 PM
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I always run less in my front than my rear. Think about it, the rear supports all the weight when towing. I usually run 70 in the rear and 55 in the front towing. Not towing I run 55 all around. All tires and trucks are different though, just play with it.
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Old 07-23-2008, 04:00 PM
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safest thing would be to set it to manuf tire pressure. Usually thats about 80% of the max on the sidewall.
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Old 07-23-2008, 04:37 PM
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I run 60psi all around all the time. Gives me the best ride and best tire wear. I never have had a problem with it even when towing heavy loads.
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Old 07-23-2008, 04:58 PM
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with u pulling a 5th it would be a good idea to have your tires right on... they will wear correctly as long as u check them every couple of weeks and u rotate them when u should. i bought a digital tire pressure gauge, its worth it to keep your tires in check
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Old 07-23-2008, 05:00 PM
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and it sounds like u have load range E tires with them going up to 80 psi so u have good tires for ur rig. perfect for towing like u do.
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