60-65 psi sounds right, but maybe you can get a chalk test in before the snow falls (plow ready of course).

 

Chalk test?

 

 

A 5th wheel won’t add much weight to the front end. I typically leave front tires 50-55psi and only adjust the rear for towing. 60-65pai towing. 45-50psi when empty.

If you have others service your truck watch the tire pressures. Likely over inflated to 80psi because the so called mechanic thinks the door sticker still applies and can’t read the sidewall 🤦

 

Me, every time i leave a tire shop.

 

I would use the recommended tire pressure on sidewall of tire,especially if your doing alot of 5th wheel towing.The tire manufacturers put that there too prevent tire failure, I know I changed my tire size and they still recommended a 80 psi at max load,I always adjust to what I am towing. But for plowing Def use lower pressure so you get better traction.

 

The PSI listed on the sidewall is max tire pressure of that tire and has nothing to do with what you should air your tires to.

 

It has everything to do with it, if he is at max load on rear on truck towing 5th wheels and tires are not at what a manufacture states, he is at risk of blowing a tire, what the hell do you think there for.

 

You didn’t get it.

 

Obviously you don't either

 

ok