ram 3500 firestone tires

At 60 lbs inflation the LT275/70R18E is rated at 3020 or 6040 for the front axle. My front axle on our 2015 RAM 3500 SRW 4x4 CC SB has weighed between 5100 to 5250 depending on loading. So it would appear that 60 is fine in the front. I put 80 in the rear for towing and 48 or so bobtail.

Front axle weight varies very little between towing and non towing.

Chris

I would run what the Tires say on the sidewall when loaded, if empty and going back and forth to work I would go down a little.

I think you'll find that with that much weight on the front, your truck will handle better with 70 PSI or more in the fronts.
Either way, I would weigh the front of the truck with the fiver attached because I suspect you are overloading the fronts with only 60 psi in them and a big trailer in tow. Then use the tire manufacturers specs to select the correct pressure.

bbaker2001 wrote:
2015 Ram 3500 has Firestone tires. LT 275/70/R18
on door
front 60psi
rear 80 psi

when pulling 5er, 11,200 lbs could you let me know what pressure.
I would think 80 rear but not sure of front. says 60, but that doesn't seem eneough

60 front, is good as the front axle weight doesn't change much with a 5th wheel.

11,200# 5er, that doesn't matter so much as what your rear axle weight is when loaded for towing and the capacity of your tires at 80 psi.

I pull an 11,200# 5er with my 2001 Ram 2500, I run the rears at 65 to 70 psi, loaded. I carry 5,500# on my rear axle, tires (camper package) 265/75-16E 3,414# ea, or 6,830# total capacity, I am 1,300# under the tires capacity at 80 psi. So running at 80 psi my rears would be over inflated for the load, reducing TRACTION!

I also drop the rears to 45 psi empty.

I always run 80 PSI when towing.