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Old 07-03-2015, 09:32 AM   #1
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Yep, tires again

Found the following chart on the wanderlodge site for my Hankook tires.....
Hankook Inflation table for 12R22.5
(From 2012 Catalog, copy in downloads)

80 psi 100 120
Dual 5190 5390 5675(F) 5785 5895 6005(G) 6265(H) 6525 6780(H)
Single 5450 5690 6005 6205 6405 6610 6870 7130 7390(H)

Compare to Michelin load rating:

75 psi 100 120
SINGLE 5200 5450 5690 6005 6205 6405 6610 6870 7130 7390
DUAL 9980 10380 10780 11350 11570 11790 12010 12530 13050 13560

Weighed the coach and trailer yesterday, steer =11,020, drive=20,640, trailer=2,860 total 34,520

What pressures would you run?


2008 Thor Mandalay Presidio, 400 ISL
RVing since 1974!
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Old 07-03-2015, 09:51 AM   #2
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What kind of tires, make and sizes, you have?

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Old 07-03-2015, 10:06 AM   #3
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On my Hankooks I'm running 112 on the fronts, which means about 120 once they heat up.
2010 Fleetwood Discovery 40X
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Old 07-03-2015, 10:33 AM   #4
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I couldn't figure out information from your unformatted, unlabeled list of numbers.

Since Hancock no longer offers specific tire pressures per load tables, I'd use the ones at Michelin's website. Hancock and Michelin are owned by the same tire conglomerate, I believe. Seems to be the common recommendation of most folks.

Load & Inflation Tables | Michelin Truck

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 07-03-2015, 09:21 PM   #5
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Run what your MH placard recommends. That's what the RMA=Rubber Manufacturers Association states on pg 55, ch 4 of their pdf. It also states load/inflation charts should only be used when the inflation pressure exceeds the mfgrs placard stated air pressure.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"
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Old 07-04-2015, 04:49 AM   #6
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Sorry just realized the chart didn't paste well.

I think Thor took the easy way out, placard says 120 lbs in all. That seems like no thought went into it.

The chart when formatted correctly says 110 front, 80 rear. Based on my scale weights.

I am thinking run 120 front, 90 rear.


2008 Thor Mandalay Presidio, 400 ISL
RVing since 1974!
Lots of Motorcycles
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