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Old 02-27-2016, 06:13 PM   #41
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well you are right,, just use the tables,,,, they work!
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Old 02-27-2016, 06:33 PM   #42
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Settng tire pressure to load is a matter of getting the proper tire to road contact patch. The reason those who have used the tire manufacturer's tables feel a more stable ride is a tire overinflated for load has less contact with the road surface, actually overheating at the contact area, causing higher center tread wear and less side to side grip.


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Old 02-27-2016, 06:57 PM   #43
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Quote:
Originally Posted by TwiceTheIce View Post
I have weighed the coach, done the math and checked the Michelin pressure chart, but it doesn't seem right. Please confirm that I am correct or point out my error. Thanks.

Michelin 275/80R22.5 H XZA3 tires.

150 Gallons of Fuel
Fresh Water Full
Fridge Full
Liquor cabinet Full

Steer axle: 12800#
Drive Axle: 15020#
Tag Axle: 7380#
Total 35200#

When I check the Michelin chart, I get:
110 psi on Steer
75 psi on Drive
75 psi on Tag.

I know it is a big difference on load per tire from the front to the back, but it just seems like a big difference in pressure on front and rear.

PLEASE NO GUESSING. PLEASE NO OPINIONS. JUST PURE KNOWLEDGE.
Just increase PIS on rear tires by 5 PSI and you should be good per info from Michelin manuals. See attached. What about it guys?
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Old 02-27-2016, 08:58 PM   #44
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Another site team cleanup has been done. This is the last warning before this thread gets closed. Keep it civil.
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Old 02-27-2016, 10:16 PM   #45
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Silver, this is exactly what I did (except for adding the 5psi to the 75psi). In my op, I just wanted confirmation, because 75 psi sounded low. To all of you with knowledge and the willingness to share it--Thank you.

For those who don't know and don't care that they don't know--there are none so blind as those who refuse to see.

Revised solution: 110 for steer and 85 for everything else. I just can't bring myself to go to 75 or 80 (at least until the Michelin man calls on Monday).
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Old 02-27-2016, 10:17 PM   #46
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Ron that sounds like the best. Hope you are enjoying that new Berk extra long.
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Old 02-27-2016, 11:19 PM   #47
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Another good thread closed because some members are unable to follow the rules and stay civil and on topic. I do hope the OP has enough info to answer the question.
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