"LT" tire pressures on Expedition

Rustycamperpants wrote:

Ductape wrote:
What is the pressure rating for your wheels?

Thats a good question , I dont know. I have the stock 20" wheels on my truck. I used a air pressure guide for a tire installer and it looks like if I use 50 - 55# of pressure I should get all the capacity I need. (in the neighborhood of 2,335-2,360# per tire).

I also read that if I go above 60# I may blow out my valve stems. I think I will run at 50, maybe 55#. The stiffer sidewalls should make a nice difference.

I think you are figuring right to run tires at 50-55 psi. Since you can compare how the trailer towed before, to how it tows now, you can adjust accordingly. Yes, the wheels will have a load rating, and tires/wheels designed for 80 psi, normally have higher rated valve stems. IMO, if you need more psi, due to handling, wanting stiffer sidewalls, you should be good to 65 psi, with no worries.

Jerry

Rustycamperpants wrote:

Ductape wrote:
What is the pressure rating for your wheels?

Thats a good question , I dont know. I have the stock 20" wheels on my truck. I used a air pressure guide for a tire installer and it looks like if I use 50 - 55# of pressure I should get all the capacity I need. (in the neighborhood of 2,335-2,360# per tire).

I also read that if I go above 60# I may blow out my valve stems. I think I will run at 50, maybe 55#. The stiffer sidewalls should make a nice difference.

Be careful what you read on forums, especially RV ones. You're not going to blow out a valve stem by airing up to 60 lbs, or even 120 lbs, nor will your factory OEM wheel grenade. The pressure rating of your OEM wheel, if it even has one, will be more than the pressure any tire requires that will physically fit on it along with a substantial margin for safety/ error. Don't inflict yourself with a case of Rv board OCD.

Ductape wrote:
What is the pressure rating for your wheels?

Thats a good question , I dont know. I have the stock 20" wheels on my truck. I used a air pressure guide for a tire installer and it looks like if I use 50 - 55# of pressure I should get all the capacity I need. (in the neighborhood of 2,335-2,360# per tire).

I also read that if I go above 60# I may blow out my valve stems. I think I will run at 50, maybe 55#. The stiffer sidewalls should make a nice difference.

What is the pressure rating for your wheels?

My door sticker says 70 front and 65 rear on the dually's. When I hook up my toy hauler I have 3500 pounds on the 5th wheel hitch and I don't change my tire air pressures. The tire inflation tables say I'm carrying the proper amount air pressure for the weight I'm carrying. The max air pressure rating on your tire is for the maximum weight that tire will be carrying. If your not carrying the maximum weight then there is no need for maximum air pressure.

Get your Expedition weighed and then check the weight against a tire inflation table or go by the door sticker.