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Old 06-16-2015, 07:24 AM   #11
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Go with tire sidewall pressure.

TURBS
08 duramax tuned n modded
2011 32bhok Sabre
2015 camping "9 nights"
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Old 06-16-2015, 09:29 AM   #12
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It seems pretty clear that there are three camps when it comes to motorhome tire pressures. The first camp looks at the recommended pressure (in the manual or on the door jam) and uses that. The second camp looks at the maximum pressure rating of the tire and uses that. The third camp tries to determine the actual load on the axles, calculates the appropriate pressures from the tire manufacturers tables, and uses those.

Each approach has it's good and bad points and each will result in pressures which are not totally unreasonable. Most of us prefer one approach or another and few of us are likely to change.

Dave
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Old 06-16-2015, 10:26 PM   #13
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Quote:
Originally Posted by ericlakin View Post
Hmm. My dealer said to follow the Mercedes guidelines which are different from what the tires say I think.
Two things to consider:

1 mercedes does not guarantee the tires, the manufacturer does. So if you have a failure and you did not follow the mfg. rules, guess who's going to pay?

2 the mercedes spec probably applies to the chassis only, i.e as delivered to the RV manufacturer. Not fully built up and loaded.
Just like the mileage spec: 24 mpg is true for the chassis only.
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Old 06-28-2015, 08:44 PM   #14
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sprinter-source.com has a number of discussions on tire pressure as it relates to the sprinter chassis. here's a good one. pay particular attention to page 2 as it points you to a tire pressure chart that can be used after you weigh your coach fully loaded to determine the correct tire pressure to use. note that while manufacturers may vary the tire sizes are standard so the gooyear charts still apply.

Tire Pressure Question: 225/70 R15 Vancos - Page 2 - Sprinter-Forum
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