Cummins12V98 wrote:
burningman wrote:
I tend to run 80 psi in all my tires not only because that's what the tires want for max load capacity but also because there's a lot less rolling resistance, therefor better mileage.
Try lowering your air pressure and pushing your truck across a smooth floor, then try it with them at max pressure and you'll see a "yuge" difference.
I don't mean to say everyone else should do that, if a softer ride is more important then by all means run less pressure. That's just why I run mine at max.
You can do as you please but proper inflation will give LONGER tire life and BETTER stopping power.
I easily made 120K with Michelins on my 98 RAM 4x4 diesel. BFG's easily 100K. 72 front and 45 rear unloaded.
Oh yea ride quality!!! I run 35psi rear of my Dually solo and 65 with 10K load, 80 front ALL the time.
Ron, we see this come up all the time. Max load at 80 psi, inflate to 80 psi! :S
This is most likely the reason many with dually's complain about poor traction in wet and snow.
One of these days they might all understand MAX, is not the best!
It is best to inflate for the load and adjust the pressure according. You should not put 80 psi in rear dual tires when running empty, consider if your empty rear axle weight is around 3,000# to 3,500# usually one of the tires at 80 psi is rated to carry that load.
Inflating a tire to Max air pressure when it is only carrying 1/4 of it's max capacity is over inflating the tire, plain and simple.
Do the math, tire capacity at Max pressure, is likely 2,000# to 3,000# more than the rear axle is rated for.
