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Old 11-02-2012, 09:52 AM   #1
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Question Tire Pressure

This question may seem elementary to some but here goes. If I am checking my tire pressure before leaving a campground, will I get a different reading if I still have my leveling jacks down since some of the coach weight is off the tires? Thanks to all who respond.
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Old 11-02-2012, 10:41 AM   #2
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Probably.
Tire dealers inflate the tire on the rim in the cage then do a final check on the vehicle with weight on the ground
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Old 11-02-2012, 11:09 AM   #3
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Great question?

However check them after your jacks are down before you drive regardless.

I have checked them both ways before and never gave much thought to your hypothesis nor have I noticed much difference and evidently not enough to make a difference. Except one time when I checked with jacks down my inside right dually was flat. Had I dropped the MH and then checked I may have damaged the tires.

Checking them in the manner in which you are going to use the vehicle seems the right thing to do no matter whether you have checked them on the jacks or not.

Anyway it is a good question and we need an "air engineer" for some definition. It would seem logical that if you apply weight you increase the forces (pressure) in the tire. A balloon will break if you keep applying weight to it, is that a question of psi or volume?

Otherwise "why is there air"? (Bill Cosby sometime in the seventies).
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Old 11-02-2012, 11:13 AM   #4
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the answer to the OP's question is no.
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Old 11-02-2012, 11:15 AM   #5
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Quote:
Originally Posted by WeatherTodd View Post
the answer to the OP's question is no.

Why? How?
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Old 11-02-2012, 11:21 AM   #6
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Quote:
Originally Posted by njs42 View Post
Why? How?
if the OP takes a reading of the tire cold... it wont matter how much load is on/off it.
Now rolling down the highway close to max carrying capacity is a different story.
Either way... barring leaks or other factor the pressure should stay the same.
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