Air pressure when not towing
I run my truck tires at max or close to max when towing (80psi). Was thinking about lowering them down when not towing. Anyone else do that ?
Forum Discussion
transamz9 wrote:
Cummins12V98 wrote:
transamz9 wrote:
I run 55 in the front all the time and 65 when towing and 45 when empty in the rear but I run 8 ply tires so 65 is my max.
Why would you run "D" rated tires when "E" are standard?
The tire I am running is not made in an "E" in the size I'm running. The "D" That I have on the truck has the same rating as the OE.;)
So you tow "18,000 lbs" with a 2500HD pickup truck with D rated tires at 65psi?:hCummins12V98 wrote:
transamz9 wrote:
I run 55 in the front all the time and 65 when towing and 45 when empty in the rear but I run 8 ply tires so 65 is my max.
Why would you run "D" rated tires when "E" are standard?
The tire I am running is not made in an "E" in the size I'm running. The "D" That I have on the truck has the same rating as the OE.;)transamz9 wrote:
I run 55 in the front all the time and 65 when towing and 45 when empty in the rear but I run 8 ply tires so 65 is my max.
Why would you run "D" rated tires when "E" are standard?- 65 unloaded and 75 towing.
larry barnhart wrote:
Cummins12V98 wrote:
I probably have more pin weight than anyone posting so far, 4,500#. Weigh your rig loaded and unloaded. Use the tire inflation chart associated with your tires.
I run 80 in the front all the time is is a bit high on the chart but it averages out for the edge wear fron turning.
On the rear I run 55 loaded and solo 45.
My truck is a 3500 RAM Dually.
If you are running 80 in the rear with a dually your rear tires will be bald in the center in no time and I would hate to ride in your rig!
27000 combined weight and 55 lbs of air pressure in the rear tires seems very low to me but if it works it works.
chevman
It is actually 28K now! Gained a few since joining!
Use the weight charts that is what they are for then add 5psi.Cummins12V98 wrote:
I probably have more pin weight than anyone posting so far, 4,500#. Weigh your rig loaded and unloaded. Use the tire inflation chart associated with your tires.
I run 80 in the front all the time is is a bit high on the chart but it averages out for the edge wear fron turning.
On the rear I run 55 loaded and solo 45.
My truck is a 3500 RAM Dually.
If you are running 80 in the rear with a dually your rear tires will be bald in the center in no time and I would hate to ride in your rig!
27000 combined weight and 55 lbs of air pressure in the rear tires seems very low to me but if it works it works.
chevman- I probably have more pin weight than anyone posting so far, 4,500#. Weigh your rig loaded and unloaded. Use the tire inflation chart associated with your tires.
I run 80 in the front all the time is is a bit high on the chart but it averages out for the edge wear fron turning.
On the rear I run 55 loaded and solo 45.
My truck is a 3500 RAM Dually.
If you are running 80 in the rear with a dually your rear tires will be bald in the center in no time and I would hate to ride in your rig! - x2, I have an 08 1500 MegaCab and follow just what wcjeep said. The no load/loaded switch on the dash is a nice feature
- The door jamb should say what the OE recommends when empty. My Mega is 2500 SRW. When empty with stock tires I run 55psi front, 48psi rear. There is also a chalk test to verify the correct pressure for your rig. When empty at max pressure the ride is not pleasant. Must keep wife happy.
- I certainly don't run max PSI in any of them since my weight would not need it. 65 front all the time, 40-45 rear empty and 65 PSI when towing.
I believe all the manufactures publish correct inflation charts if you know your weights.
Example
Another thing other than ride comfort is a over inflated tire will have less contact patch.
