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Old 09-23-2012, 01:49 AM   #1
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A Question about tire pressure

Have a 30 foot TT. Weighs in at 7500 to 7800 LB loaded. I am running 225 / 75 / 15 ST tires. What PSI are you running your tires at for this scenario?
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Old 09-23-2012, 06:35 AM   #2
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Always go with the recommended tire pressure on the tire. If the weight is too much you can always step up to a higher rated tire
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Old 09-23-2012, 08:27 AM   #3
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Your mfg will have a suggested weight in your manual or posted on the placard on your rv....
but that's with the original stock tires only...

Also, the sidewall of any tires made in the last decade will have the max load and max psi stamped on the side of the tire...

The tire stamped psi is what I normally run my rv's tires at... gives
max load carrying capacity and
max mpg (because it gives minimum drag) and
harshest ride (but no ones every riding in the rv to notice )
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Old 09-23-2012, 10:21 AM   #4
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Got my answer

65 LB is the suggested PSI for my tires. Thanks for your help.
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Old 09-23-2012, 06:37 PM   #5
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There isn't a "suggested PSI" on the tire sidewall. It's a maximum PSI at cool temp. So usually, I will just air tires to max for a trailer. Max load as stated.
Tow vehicle tires PSI is a different story.
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