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Old 07-27-2015, 02:58 PM   #1
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Brand: Thor Motor Coach
Model: 29.3
State: Massachusetts
Posts: 61
THOR #2125
Thor Ace 29.3 tire pressure

Can any one explain how critical air pressure is on my tires
Tires say 110 psi cold. Rear two tires right side one tire 100 other 110
Rear two tires left side one tire 100 other 105
Front tire right 100 Front tire Left 105

FrankO
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Old 07-27-2015, 03:31 PM   #2
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Brand: Thor Motor Coach
Model: Tuscany 38SQ
State: North Carolina
Posts: 104
THOR #799
Very critical. Over inflation will cause premature tire wear not to mention a rough ride. Under inflation will create excessive heat and potentially cause a blowout. You need to have your rig weighed. Ideally a four corner weigh but if that isn't an option have each axle weighed. Go to your tire manufacturers guide for tire pressure and adjust the air pressure accordingly.
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Old 07-27-2015, 06:10 PM   #3
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Brand: Thor Motor Coach
Model: Tuscany 38SQ
State: North Carolina
Posts: 104
THOR #799
See Attached for Goodyear Load Inflation Tables
Attached Files
File Type: pdf rv_inflation.pdf (86.7 KB, 178 views)
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Old 07-27-2015, 06:22 PM   #4
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Brand: Keystone
Model: Cougar 30 RLS 5th wheel
State: Colorado
Posts: 287
THOR #2204
Yes tire pressure is critical. I check and adjust tire pressure each time I bring
the MH to the house before a trip.

If you do not own a air compressor invest in one. Even a pancake air compressor
that will go to at least 120 lbs. is sufficient for your needs.

Harbor Freight sells a decent selection of air compressors, I bought my Craftsman
air compressor off craigslist, it is a 26 gallon upright .
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Old 07-27-2015, 06:29 PM   #5
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Brand: Thor Motor Coach
Model: Tuscany 38SQ
State: North Carolina
Posts: 104
THOR #799
More info on tire pressure.

The Inflation Loading - Goodyear RV
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Old 08-04-2018, 01:30 AM   #6
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Brand: Thor Motor Coach
State: Alberta
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THOR #11913
Check your panels on the drivers seat left side --it will tell you My 2014 Ace 29.3 says 82 psi mine ae set to 81 psi
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Old 08-14-2018, 07:49 PM   #7
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Brand: Thor Motor Coach
Model: A.C.E. 29.2
State: Tennessee
Posts: 68
THOR #10300
Yep - I second what Milton says above -- my 29.2 calls for 82 psi for all six tires - that is standard for this size MH on the F53 chassis and should be what the placard adjacent to the driver's station designates. Pressure values on tire sidewalls are not necessarily what the various vehicles they are put on require. IMHO, your psi of >100 is much too much for the size and weight of MH.
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Old 08-14-2018, 08:11 PM   #8
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Brand: Thor Motor Coach
Model: ACE29.3
State: Pennsylvania
Posts: 129
THOR #4359
Quote:
Originally Posted by jwcorry View Post
Yep - I second what Milton says above -- my 29.2 calls for 82 psi for all six tires - that is standard for this size MH on the F53 chassis and should be what the placard adjacent to the driver's station designates. Pressure values on tire sidewalls are not necessarily what the various vehicles they are put on require. IMHO, your psi of >100 is much too much for the size and weight of MH.
same here 82
when I had it at 80 handling was not good
anything above 82 handle was also not good.

also depends on the gauge.... two different gauges two different readings.
I run the Milton at 82 the Jaco at 84
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