Dually tow vehicle tire pressure
Ok. Dually Truck door jamp sticker says rear pressure 65 pounds and front 70. My 5th wheel is 12995 dry and 15000 loaded. I run 80 pounds in rear tires when towing which is maximum rating. I run 70 in...
Forum Discussion
Impulse24 wrote:
What some people don't understand is there are two different standards at play with tire pressures.
1. The Sticker in the door is a DOT standard of maximum pressure for the ORIGINAL TIREs that came with the vehicle, which in turn were used in accordance with the design and manufacture of the vehicle and its specifications.
2. The max pressure on the tire is the max the amount of air the tire was designed to safely be used at. That pressure is also calculated to allow for expansion when the tire gets hot.
Therefore in realty if you are using original tires then the DoT sticker should be your Maximum Pressure.
And if you are buying after Market the maximum on the tire should be used. Regardless of weight in no way should those pressures be exceeded.
My Dually states 65 all round on the sticker, and that is the pressure Discount Tires also recommends,
My 5th wheel tires are also 65 psi max and I run on 65 psi all round and have no problems.
Sorry but that is not true. The door sticker is what air pressure is required to support the axle weight that the truck is rated for. My FAWR is 6,000# and 80psi front tires is what is need to properly support that load. My RAWR is 9,750# and 65psi is required to support that weight. Your part about " The Sticker in the door is a DOT standard of maximum pressure for the ORIGINAL TIREs" is not correct.
Discount tire recommends what the door sticker says. That is what they fill to. They would NOT fill my rears to 35psi as that is all that is needed to safely run solo with my dually truck. It's called CYA!!!
