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Old 02-04-2017, 02:29 AM   #1
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Tire inflation question

Today I got the RV on a scale after loading everything into it. I have the individual weights, however the PSI table of the TOYO tire shows MUCH lower PSI than the label from Monaco or Goodyear (old original tires)

As an example, my tag axle at 11160 Lbs total shows 75 PSI from TOYO vs 90 PSI.

Steer came at 14720 total and based on TOYO is 102 PSI vs 115.

Should I go with TOYO's table??
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Old 02-04-2017, 05:58 AM   #2
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I would use Toyo table plus 5 psi.
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Old 02-04-2017, 02:15 PM   #3
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Be sure that you are comparing the same ply rating between Toyo and Goodyear. I have found different brands of the same ply rating to be very close to one another.
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Old 02-04-2017, 03:32 PM   #4
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Quote:
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Be sure that you are comparing the same ply rating between Toyo and Goodyear. I have found different brands of the same ply rating to be very close to one another.
Sounds right to me.
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Old 02-04-2017, 04:34 PM   #5
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The numbers on the coach are what the pressure would be if your coach was loaded to capacity. There is no way they're going to know how light or heavy you're going to load the coach. That's why weighing the coach always gives you more precise numbers.

Do as "George Z" suggested and add 5psi. Watch the outer edges for excessive wear (under inflated). If they look good after 5K, lower them down some more. I like mine as soft as possible, without wearing, to make for a better ride.
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Old 02-05-2017, 10:12 AM   #6
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While you are at it, have your tire gauge checked at a tire place. My ride seemed to be a little rough lately. Bought a new gauge and it was reading 10lbs more than the old gauge. Sure enough, the old gauge was reading 10lbs low so I was over inflated. I am sure it could go the other way also, which would be alot worse.

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Old 02-05-2017, 10:33 AM   #7
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Use the tables for the tires on your rig. Use the same pressure on both sides, based on weight of the heavier side. No need to overinflated bur more is better than less. Check pressure changes due to outside air temp, your big rig tires can easily drop 5 psi + on a cold morning, e.g., was 70 degrees when you arrived yesterday, and it is 35 this morning for departure. Fill for the cold morning temperature. Previous advice about checking your tire gauge is good advice.
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Old 02-05-2017, 12:54 PM   #8
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Quote:
Originally Posted by George Z View Post
I would use Toyo table plus 5 psi.
Same here
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Old 02-05-2017, 12:59 PM   #9
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Toyo want's you to use the pressures listed on the label from Monaco !
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