rhagfo wrote:dbbls wrote:
Look on the door post and air up accordingly.Cummins12V98 wrote:
Weigh your combo loaded and TV seperately. Use tire weight/inflation chart.
My Ram 2500 4x4 Cummins empty 72 front 45 rear rotate about 15k. Michelins or BFG's I easily get over 100k on a set. I would guess for you 65 front.
I go with Cummins12V98 on this subject! The door post is for MAXIMUM load not daily driving. Running the rears at 70 empty, will;
shorten tire life
result in reduced traction in wet weather
result in harsher ride when empty
I also run about 45# empty, loaded about 70# (80# max pressure), loaded for bear my rear axle is about 5,200# tires rated at 6,830#.
lightfoot wrote:
x2 on the door post. can't go wrong with the OEM's numbers.
spoon059 wrote:lightfoot wrote:
x2 on the door post. can't go wrong with the OEM's numbers.
Ask a 90's Ford Explorer owner with Firestone tires...
Cummins12V98 wrote:
Your front tires will be worn out in no time with that low of pressure on the front with the heavy Cummins up front.
You have the 45 rear part right now air up to 72 in the front. The ride won't be much different and your tires will last.
If a 150 ride is more important than disregard the above.
jus2shy wrote:Cummins12V98 wrote:
Your front tires will be worn out in no time with that low of pressure on the front with the heavy Cummins up front.
You have the 45 rear part right now air up to 72 in the front. The ride won't be much different and your tires will last.
If a 150 ride is more important than disregard the above.
That's what I initially thought as well, 60psi is recommended up front. Running at 60psi unloaded, I wasn't getting the full foot-print on the road. I was getting like 3.5 ribs out of 5 ribs contacting the front patch. I think it might be due to RAM using a wider tire now a days. Stock tire size is now 265/70r18. Far wider than the 245's used on duallies and older trucks. So I had to air down to ensure that the shoulders were bearing some of the load versus center tread.
