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Old 10-14-2012, 06:34 PM   #1
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Tire Pressure

We have a 2013 340xl. Inside the cab the sticker says 90psi for the front and rear, inside and out. The tires them selves say 110psi cold. I check the tire preside today, cold, and they read just over 100psi. What is the correct pressure to go by?
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Old 10-14-2012, 06:36 PM   #2
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Sticker.

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Old 10-14-2012, 06:37 PM   #3
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Quote:
Originally Posted by SemperFi3088 View Post
We have a 2013 340xl. Inside the cab the sticker says 90psi for the front and rear, inside and out. The tires themselves say 110psi cold. I check the tire preside today, cold, and they read just over 100psi. What is the correct pressure to go by?
What is the load on the tires?

The correct tire pressure depends on the actual load on the tires; but never lower than the cab sticker and never higher than the tire sidewall.

FOR EXAMPLE:
Attached Files
File Type: pdf Trailer_Tire_load_and_pressures.pdf (142.2 KB, 69 views)
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Old 10-14-2012, 06:56 PM   #4
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Hey Herk, the load is minimal. In total, under cab storage. may have a total of 500lbs of cargo if that. LPGAS is 3/4, black and grey empty, fresh 3/4 ( just filed up it up), fuel is 1/4. We won't be towing.
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Old 10-14-2012, 07:01 PM   #5
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Originally Posted by SemperFi3088 View Post
Hey Herk, the load is minimal. In total, under cab storage. may have a total of 500lbs of cargo if that. LPGAS is 3/4, black and grey empty, fresh 3/4 ( just filed up it up), fuel is 1/4. We won't be towing.
I think you missed my point. Have you weighed your rig?
Get the gross weight and divide by the number of tires.
Look up that weight in the table and see what the recommended tire pressure for that load is.

If less than the sticker; use the sticker.
If more that the sticker; use the table pressure. You MAY BE overloaded.
If more than the sidewall pressure; YOU ARE OVERLOADED.
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Old 10-14-2012, 07:18 PM   #6
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Table? I have yet to see a chart or table showing weight weights and receded tire pressure. Above the driver on the left wall it has a stick showing tire pressure for the front and back tires only, no chart it table? ???!
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Old 10-14-2012, 07:20 PM   #7
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I attached a sample to my original post as a PDF.
The manufacturer of your tires has one just like it.
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Old 10-15-2012, 12:54 PM   #8
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SemperFi3088
I think your MH was Michelin Tires.
Go to the Michelin Web Site and reference the RV Tires Load &
Inflation Guide.
You should find your tire size.
Gary
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Old 10-15-2012, 01:32 PM   #9
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Quote:
Originally Posted by SemperFi3088 View Post
We have a 2013 340xl. Inside the cab the sticker says 90psi for the front and rear, inside and out. The tires them selves say 110psi cold. I check the tire preside today, cold, and they read just over 100psi. What is the correct pressure to go by?

I have 235/80R 22.5" XRV and here is my chart

If you can't read it download the RV Tire Guide here
http://www.michelinrvtires.com/michelinrv/toolbox/reference-material.jsp
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Old 10-15-2012, 02:43 PM   #10
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Over 90 good under 90 bad.
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