Am I reading/interpreting this correctly? Re:Tire Pressure

[sloman2001]

I have weighed my MH, it is actual 11,340 lbs front (12,350 maximum), and 19,040 (20,000 maximum) on the rear axle with dual tires.

I have the designated tires as shown below and got this chart from the Michelin website. I am dividing the actual front tire weight by 2 ( 11,340 / 2 = 5,670 lbs ). Using the chart, the front tires should be inflated to at least 100 lbs, while the rear tires ( 19,040 / 2 = 9,520 lbs ) should be 90 lbs psi.

Having said all that, is that what all of you would do, or would you add extra psi and slightly overinflate? Sorry, I am new at this.


275/80R22.5 LRG
75 80 85 90 95 100 105 110
Single 4725 4940 5155 5370 5510 5780 5980 6175
Dual 8600 9080 9380 9770 10140 10520 10880 11350

Thanks, Tom

PS. I hope this table posts OK, or it will be hard to read. There does not seem to be a preview option.

[J-Rooster]

Tom, IMHO, I would experiment with tire pressures each time you go on a trip to find the right pressure that suits your needs. My recommended tire pressures on my RV were 85 psi rear and 90 psi front. I was experiencing rear tire squirm at those recommended psi. I experimented each time out and discovered that 100 psi worked best for me.

[Mandalay_Parr]

Old-Biscuit wrote:

Mandalay Parr wrote:
I generally add about 10 lbs since they might loose that much over the course of a year.

You only check tire pressure once a year :H

Should have mentioned I have tire pressure sensors.

Jerry

[Old-Biscuit]

Mandalay Parr wrote:
I generally add about 10 lbs since they might loose that much over the course of a year.

You only check tire pressure once a year :H

[dan-nickie]

I guess this helps solve your problem of how to air them up to 110 🙂

I know it was a lot easier on me when I found out I didn't have to go to 110.

[sloman2001]

Thanks for the info, I understand. I thought the 90 lbs might have been too little, but at least I am reading it right. I will go with the extra 5 lbs psi safety factor.

Thanks so much to all of you!
Tom

[dan-nickie]

sloman2001 wrote:
I have weighed my MH, it is actual 11,340 lbs front (12,350 maximum), and 19,040 (20,000 maximum) on the rear axle with dual tires.

I have the designated tires as shown below and got this chart from the Michelin website. I am dividing the actual front tire weight by 2 ( 11,340 / 2 = 5,670 lbs ). Using the chart, the front tires should be inflated to at least 100 lbs, while the rear tires ( 19,040 / 2 = 9,520 lbs ) should be 90 lbs psi.

Having said all that, is that what all of you would do, or would you add extra psi and slightly overinflate? Sorry, I am new at this.


275/80R22.5 LRG
75 80 85 90 95 100 105 110
Single 4725 4940 5155 5370 5510 5780 5980 6175
Dual 8600 9080 9380 9770 10140 10520 10880 11350

Thanks, Tom

PS. I hope this table posts OK, or it will be hard to read. There does not seem to be a preview option.

Looks like you have a handle on it.
BTW, your pressures of 100 front, 90 rear seems to be a pretty common result after people get their weights.
Many of us add a little since we do not have 4 corner weights.
I went with 105 front and 95 rear after adding 5 lbs for safety.

[Mandalay_Parr]

I generally add about 10 lbs since they might loose that much over the course of a year.

[wolfe10]

Effy wrote:
Shouldn't you divide the rear weight by 4 since it's dual?

No, not on Michelin chart.

[Effy]

Shouldn't you divide the rear weight by 4 since it's dual?

[bluegypsy]

In a perfect world one should weigh each "corner" of the MH. Having said that, I haven't been able to find a place where I could do that, so I did my math same as you, and added 5 psi per tire to make up for possible side-to-side weight differences. Over 40,000 miles on our tires with no problems so far (fingers crossed).

[sloman2001]

Sorry, I don't know how to post the chart so it is easy to read.

[sloman2001]

This chart is a little more readable. Sorry, Tom

275/80R22.5 LRG
75 80 85 90 95 100 105 110
Single 4725 4940 5155 5370 5510 5780 5980 6175
Dual 8600 9080 9380 9770 10140 10520 10880 11350