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Old 12-18-2020, 04:46 PM   #1
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Correct Tire Pressure

Can the RV Gods help me out??

I weighed the coach today. Full fuel, full def, full fresh water, fully loaded as used with driver and passenger. Honestly I was shocked we were so close to axel maximums....

What tire pressure for the following:

Front axle
Michelin XZA 365/70R 22.5 LRL
Drive & Tag axle
Michelin X Line Energy Z 315/80R 22.5 LRL
Axle weight
Front axle 19220 lbs
Drive axle 19500 lbs
Tag axle 13,000 lbs
Total 51,720lbs
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Old 12-18-2020, 04:56 PM   #2
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Quote:
Originally Posted by aguyintx View Post
Can the RV Gods help me out??

I weighed the coach today. Full fuel, full def, full fresh water, fully loaded as used with driver and passenger. Honestly I was shocked we were so close to axel maximums....

What tire pressure for the following:

Front axle
Michelin XZA 365/70R 22.5 LRL
Drive & Tag axle
Michelin X Line Energy Z 315/80R 22.5 LRL
Axle weight
Front axle 19220 lbs
Drive axle 19500 lbs
Tag axle 13,000 lbs
Total 51,720lbs
call your tire mfg with all of your info, they will give you that info.
good luck, d johnson
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Old 12-18-2020, 05:59 PM   #3
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F 115, good for 19,640 lbs.
D 85 ( lowest pressure listed...good for 23,360) I would probably run 80 psi.
T 80 (lowest pressure listed...good for 14,700 lbs). Since you have a steering tag I’d run 75 psi.
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Old 12-18-2020, 06:12 PM   #4
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https://www.rvsafety.com/images/pdf/...ionrvtruck.pdf
This is a link to Michelin RV tire pressure.
IVYLOG listed the correct pressures, but + 5% overages is a good safety factor.
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Old 12-19-2020, 07:26 AM   #5
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The Drive and Tag lowest psi are already 10+% over... would not go even higher. The front axle at 115 psi is 2% over so going to 118 is a good idea, especially without individual tire weights.
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