Losing Rear Tire Pressure on Tow Vehicle

[pmlevine]

Hi All,
I am towing a Winnebago Micro Minnie travel trailer, dry weight plus load is about 4300 lbs. The tow vehicle is a 2016 Nissan Frontier, crew cab, GVWR 5815 lbs, GVWR FR 3296 lbs, GVWR RR 3331 lbs. Tire inflation for the Nissan Frontier is recommended 35 psi for both front and back tires. I have noticed after a towing trip, both rear tires seem to have lost 2 psi, and I measure 33 psi, the front tires remain unchanged at 35 psi. Is this normal for the tow vehicle rear tires to lose a couple of psi because of towing a travel trailer?

[Skip426]

Welcome to iRV2.

No, some tire pressure loss due to change in altitude or ambient temperature , but not due to towing.
Could there be another reason that the front pressure was slightly up ?
Front of truck in the sun; while the rear tires were in the shade ?
Has this happened more than once?

[timetogo]

If they are E rated tires, they are under inflated at 35. 75psi in the rear would give them a chance to do their job and run cooler, therefore lasting longer.

[tmm2good]

Originally Posted by timetogo

If they are E rated tires, they are under inflated at 35. 75psi in the rear would give them a chance to do their job and run cooler, therefore lasting longer.

I really doubt his Frontier has E rated tires.

Agree with Skip, towing will have no impact on the tire pressure.