How Much Tire Air Pressure When Carring More Weight ?

Nuts, forgot about the difference with duels. Won't make that mistake twice. Need to stop posting after only two cups of morning coffee.

The weight scale hitch is pretty cool. Will make finding a happy weight and repeating it easy.

Thanks for the link Dale, as you said about the psi vs weight on the AH11 that was for the single, duals have a lesser limit, my tires now say 240lbs less weight per tire with a dual setup so that puts 87 psi at my axel weight now, and 90 psi would be a better choice and that's where I am now, at least I am not under inflated.

I also noted in the link I can run even less psi in my front tires, I am at 75 psi now and was afraid to go below that, link says I can go down to 65 psi but 70 psi would be best for my front axel weight, now I can have even a softer ride in front.

Thanks

Hancook Product Info PDF Includes pressure to weight table but the table does not appear to make a distinction between load range types.

Based on the available info for an A11 245/70R19.5 80 psi or maybe even 85 psi will keep the tires well above 14,500 lbs. 80 psi puts the limit at 14,540 lbs which might be a bit to close and easy to go past when you're running close to that limit while 87 puts you up into 15,580 lbs which is well past what is needed. Maybe 85 psi will be a good middle ground. Not too high but will allow for variation as the season air temps start to drop. Plus an easy to remember number.

rgatijnet1 wrote:
Be careful shifting too much trailer weight as you may start inducing wag affect that may be difficult to control on the highway.
Also I would weigh your front axle and shift as much weight up there as possible. Most rigs ride better and steer better if the front axle is close to the maximum axle weight, when fully loaded for travel.

Yep I am lite in front so I can add more weight, need to move the heavy stuff forward and the lighter stuff to the rear, also I bought a new hitch that has gauge built in to check my tonged weight, I feel its to heavy now, this way I can see how far I can move the Jeep back but still keep my tonged weight around 12 percent of trailer weight.

Roadpilot wrote:
Here's the Michelin chart for tire pressure versus weight carried for one type of Micheline tire.

Michelin chart

Michelin has charts for all the tires they make. I'm pretty sure all tire manufacturers have similar charts.

We ne er go by the max. side wall pressure on the tire. We weight the MH and go by these weight charts.

Thanks for info in link does give me a idea, it also shows I might want to have my rear duals set at 95 psi for extra safety while towing with my setup.

Be careful shifting too much trailer weight as you may start inducing wag affect that may be difficult to control on the highway.
Also I would weigh your front axle and shift as much weight up there as possible. Most rigs ride better and steer better if the front axle is close to the maximum axle weight, when fully loaded for travel.

Sorry for the delay on response been busy, yes I have 245/70 19.5 Hankook AH11 tires, when replacing tires I upgraded to G rate {14ply} to handle more weight in the rear for my setup in pic above, the reason for asking was just wondering how to determine at what pressure for what weight, could not find a chart for Hankook but the link posted about Michelin on other page does help, I have checked my temps while on the road and my temps all run around 125 to 130 degrees on back tires, I hate to increase the pressure because it rides to ruff, I keep my fronts at 75 lbs for a softer ride.

My rear axel as to spec sheet is 13,500 lbs but as I found out its the same axel as 14,500 lbs, I guess that's do to the 22.5 tires on the 14,500 axel, since I upgraded my tire weight and added air bags I am safe for my weight of 14,400 lbs, however I am moving stuff around in rear compartment and putting Jeep 2 inches more back on trailer to bring that rear weight down to 14,000 lbs.

At 90 psi your F rated tires were within their capabilities.

Timmac said in another post: " I have 19.5 tires and can do my own flat change if needed, that's why I went with a motorhome that has 19.5 so I can carry a spare in my compartment and can change without much help.

Not sure I'd have that as the reason for being borderline on what I'm doing.

usersmanual wrote:
rgatijnet1
so absolutely sorry my man and my bad for sure had u pegged as the wrong guy and I did a edit. have to watch what I say as sometimes the fingers get ahead of the thoughts sorry

No harm done. :)

rgatijnet1
so absolutely sorry my man and my bad for sure had u pegged as the wrong guy and I did a edit. have to watch what I say as sometimes the fingers get ahead of the thoughts sorry