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Old 08-05-2015, 07:04 PM   #1
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Brand: Thor Motor Coach
Model: Challenger 35HT
State: Maryland
Posts: 64
THOR #1875
Tires

My Challenger has Michelin 235/80R 22.5 XRV tires, all set at 90psi. I just installed a TPMS system on the RV and as part of the setup it is asking for Minimum and Maximum tire pressure. Anyone have any idea what these should be set at? I searched the Michelin site which wasn't much help. Until I have a better idea, I set the minimum at 80 to allow for the decrease of tire pressure in cold weather. I set the maximum at 115 to allow for the increase in pressure while driving. If anyone has any recommendations as to what the minimum and maximum settings should be, it would be appreciated.

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USMC (Ret)
Odenton, MD
2015 Thor Challenger 35HT
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Old 08-05-2015, 08:14 PM   #2
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Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,726
THOR #1469
Randy,

The tire pressure should be set based on the weight of the coach. A four corner weight is preferable but axle weight will work if that is what you have.

Normally the min and max is a percentage of the recommended based on weight. I have seen others set the min and max at between 5 and 10 percent of the recommended.
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2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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