Semi Tires

Anonymous-0 · May 6, 2013

Just curious,What is tire PSI in dual wheels and in SINGLE wheels semi truck/trailors.Thank you GP

Hoofer B · May 6, 2013

We run 105 -110 psi in the steer tires , and 100 psi in the drives and trailers ( lo pro 22.5, dual, not singles )

CCer · May 6, 2013

Pressure spec. is shown on the sidewall of the tire, near the rim. Given for single and dual use.

VicS · May 6, 2013

ditto

old · May 6, 2013

Go with what is one the tire it self never 2nd guess them.

sixtyninegmc · May 6, 2013

What is on the tire is rated max. pressure for carrying max. rated weight, and usually way too much. Most folks round here run 80PSI in all positions except for overweight loads. You run into a lot less flats on gravel, and no abnormal tire wear.

T in NE · May 6, 2013

All the big companies run whatever the steers say, then 80 on all others. Gives about the best compromise between ride quality and weight carrying ability. Have been going around at work about this, boss wants 110 PSI in all 8 drives at all times, even just pulling a gooseneck. He's not driving down some of our lovely paved roads here in it, either, and traction on gravel is completely non-existent!

ericlb · May 6, 2013

we run 100 to 110 at all positions, but we gross out weight wise on every load 80 psi around here will get the dot to red tag you during random roadside inspection for under inflated tires, ive seen that myself, fortunately it wasnt me

D beatty · May 6, 2013

I drove for a commercial carrier and they ran 100 to 110 lbs. If we were loaded and took trailer to garage with a tire with 80 lbs. they pulled it and put a tire on with correct pressure and held the 80 lb. and checked for leak. An 80lb. tire on a loaded trailer looks flat.

sixtyninegmc · May 7, 2013

(quoted from post at 21:32:24 05/06/13) I drove for a commercial carrier and they ran 100 to 110 lbs. If we were loaded and took trailer to garage with a tire with 80 lbs. they pulled it and put a tire on with correct pressure and held the 80 lb. and checked for leak. An 80lb. tire on a loaded trailer looks flat.

Holy cow, what kind of loads are you putting on a trailer to make 80PSI look flat? We can gross 88k with a tandem trailer up here, and a 11r22.5 looks just right with 80psi. Only time I`ve run over 80 is on lowboys and dropdecks. Radials are SUPPOSED to have a bulge in the sidewall, sounds to me like some folks are still stuck in the days of bias-plys. No heat out of 80psi, which is the biggest tell-tale of underinflation. Up here the folks that run 100psi or higher always say how bad the roads are all winter, and how many hills they have to throw iron on.

D beatty · May 7, 2013

We hauled general freight which just about covered everything we could get in a inclosed trailer. I have pulled loads with 2,000lbs to the foot. The heaviest load I ever pulled with a single axle was 46,000 lbs. in a 30 foot container trailer. I run 70 lbs. in my personal pickup and 80lbs. in my trailer tires.

sixtyninegmc · May 7, 2013

So, like I said, unless you are running illegal, 80psi should be fine :roll:

showcrop · May 7, 2013

It was 120 in the tires on my Triaxle dump, but then it was always loaded heavy. I always had good even wear.

Texasmark1 · May 7, 2013

100 psi on 20-22". Under inflation will just get you noticed by the local or state "weights and measures" guys. They see the sidewalls bulging on a loaded truck and immediately think it's overloaded.

Then when they get you pulled over they bring out these little scales that are about 12" square and want you to set your tandem on them like you are some sort of ballerina dancer. Have any problems with that then they start making smartxxx'd remarks about your brakes being bad and all that crap. I know they have a job to do but they put everybody in the same category and that's just plain flat WRONG!

Besides on heavily loaded trucks, underinflation is just asking for a blow out. I had one blow on a loaded rock bucket rear tandem. The boom was immense. Had anyone been along side the truck when it went off, they'd probably have wound up in the ditch from fright.

Mark

hd6gtom · May 7, 2013

Green p run 100 psi in trailer and tandem drivers, anything less will get you in trouble. I've put on hundreds of semi and dump truck tires. I've never heard of running 80 lbs of air in a semi tire, that is just not enough psi. Heck most farmers run that much in their pickup tires.

Semi Tires

Anonymous-0

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Hoofer B

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CCer

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VicS

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old

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sixtyninegmc

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T in NE

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ericlb

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D beatty

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sixtyninegmc

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D beatty

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sixtyninegmc

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showcrop

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Texasmark1

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hd6gtom

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