lt vs pmetric

[gmyeah]

so i get the difference between the two, but where should you run the psi at normally. say you don't have a load and you have lt tires...is there a recommend pressure...like 50psi? i'm assuming if you only had 35psi in the tires like with p-metric you would where out the lt's?

[Big Whiskey]

Well, there are a lot of variables when it comes to air pressure in tires. LT tires have different max pressures, depending on the load range (or 'ply' number, as some people call it) An LT-rated tire with a C load range (6 ply) has a max pressure of 50 psi. Load range D tires (8 ply) have a max of 65 psi, and load range E (10 ply) have a max of 80 psi.

 

That being said, if you have LT tires (regardless of load range) on a 1500 truck, you can run somewhere around 40 psi when you're not towing or hauling anything. That seems to be a good compromise between ride comfort and even tire wear. I wouldn't go any less than 35 psi with LT's...and wouldn't go over 60, because it would ride terrible. All of this applies to a 1500 truck.....as a 2500 HD with a diesel is a whole different ball game.

 

I've got load range E tires on my truck, and I run 38-40 psi when empty, and bump them up to around 50-52 for towing and hauling.

[Ryan00TJ]

Well, there are a lot of variables when it comes to air pressure in tires. LT tires have different max pressures, depending on the load range (or 'ply' number, as some people call it) An LT-rated tire with a C load range (6 ply) has a max pressure of 50 psi. Load range D tires (8 ply) have a max of 65 psi, and load range E (10 ply) have a max of 80 psi.

 

That being said, if you have LT tires (regardless of load range) on a 1500 truck, you can run somewhere around 40 psi when you're not towing or hauling anything. That seems to be a good compromise between ride comfort and even tire wear. I wouldn't go any less than 35 psi with LT's...and wouldn't go over 60, because it would ride terrible. All of this applies to a 1500 truck.....as a 2500 HD with a diesel is a whole different ball game.

 

I've got load range E tires on my truck, and I run 38-40 psi when empty, and bump them up to around 50-52 for towing and hauling.

 

 

I agree. I started off running 45psi in my C range LT tires and noticed the center tread slightly more worn than the outers. I have since adjusted to 40psi unloaded and treadware is perfect across the tread. 40psi in a C range LT tire on a 1500 rides very comfortably. 45psi was firm and too stiff when empty.

 

Your best bet is to do the old chalk the tread method and see at what pressure there is even wear across the tread.

[wurgs]

Well, there are a lot of variables when it comes to air pressure in tires. LT tires have different max pressures, depending on the load range (or 'ply' number, as some people call it) An LT-rated tire with a C load range (6 ply) has a max pressure of 50 psi. Load range D tires (8 ply) have a max of 65 psi, and load range E (10 ply) have a max of 80 psi.

 

That being said, if you have LT tires (regardless of load range) on a 1500 truck, you can run somewhere around 40 psi when you're not towing or hauling anything. That seems to be a good compromise between ride comfort and even tire wear. I wouldn't go any less than 35 psi with LT's...and wouldn't go over 60, because it would ride terrible. All of this applies to a 1500 truck.....as a 2500 HD with a diesel is a whole different ball game.

 

I've got load range E tires on my truck, and I run 38-40 psi when empty, and bump them up to around 50-52 for towing and hauling.

 

 

Same here. BFG Ats running at 40lbs day to day driving and 50-55lbs hauling. After 15000 miles they are wearing very evenly.