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Old 12-16-2020, 03:45 PM   #1
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Tire Pressure Recommendations

have new Bridgestones on all six tires
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Old 12-16-2020, 03:50 PM   #2
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Just weigh your coach and use those weights in the Bridgestone tire pressure tables.
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Old 12-16-2020, 03:53 PM   #3
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You need to provide more info. What size tires?? What does each axle weigh?? Until you have the weights, what does the tire placard recommend?
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Old 12-16-2020, 04:48 PM   #4
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As F4Gary said, the only way to do it right is to take it to a local truck stop and have it weighed. It's best to weigh the four corners individually, but if the truck stop can't do that then just weigh the front and rear axles individually.

Once you have that info, go to the Bridgestone website and find the inflation charts for your tires. I always add 5 PSI to what the chart recommends!
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Old 12-16-2020, 04:58 PM   #5
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Originally Posted by MSHappyCampers View Post
As F4Gary said, the only way to do it right is to take it to a local truck stop and have it weighed. It's best to weigh the four corners individually, but if the truck stop can't do that then just weigh the front and rear axles individually.

Once you have that info, go to the Bridgestone website and find the inflation charts for your tires. I always add 5 PSI to what the chart recommends!
Roger Marble, aka Tireman9, an IRV2 member and retired tire engineer recommends adding 10% psi. In addition, even if you weigh all four corners, all tires on an axle need to be inflated to the same psi, based on the heaviest corner. Here's the link to Roger's blog which has all the info you need and more:

https://www.rvtiresafety.net/2011/03...and-roger.html

In the meantime, assuming your tires are the same size and load range as those on the door sticker, just inflate to the pressures on your door sticker until you can get your rig weighed. The psi embossed on the tires themselves is the maximum for the tires and, although OK, is more than you need and will result in a hard ride.

Note that all pressures are "cold pressures" which means the tires should be at the ambient air temperature (not driven for two hours or so).
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Old 12-16-2020, 05:20 PM   #6
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What pressure were you using for the last 4 years? My educated guess for your Beaver is 100 psi in all 6. Weighing is the only way to know for sure.
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Old 12-17-2020, 02:27 PM   #7
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I have three axles with different capacities all carrying different weights, therefore, all have different TPs. I'm with Tireman9, but rather than adding 10%, I add 10 PSI, which is easier to remember, and almost the same.
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