Inflation guidelines for towing? (RAM 3500)

Not sure if you were asking a question or not?

Always run 80psi front tires! Rears solo 40psi. Loaded heavy as I am 65psi rears but if your pin is lower use inflation/weight chart for your tires and add 5psi to what the actual load requires.

Bedlam wrote:
There is something called a load based inflation index. Based on actual weights, it will suggest tire pressure. Remember that overinflated tires not only give you a rougher ride than needed but may not grip the road as well at over pressure.

Agree, BUT, once the placard is placed on your door pr jamb, the manufacturer won't budge off that, nor the tire manufacturer disagree with the vehicle manufacturer..BUT, the tables are there to be used and they're the owners tires..I've had best luck with dually tires for wear over the last 11 years by running at manufacturers recommended air pressure, but that's based on my own personal experience.

Having worked in the auto tire industry as an engineer for a short time....the tire is NOT considered "over inflated" if it is inflated to sidewall max pressure..The front tires are filled to max sidewall pressure,(80 psi), but rears are only filled to 65 psi..(max sidewall psi, again, 80 psi

Sometimes when working more with trailers, the load tables are more proficient with tires and air presses as opposed to one's pick up truck...but..not my truck, nor my tires.

There is something called a load based inflation index. Based on actual weights, it will suggest tire pressure. Remember that overinflated tires not only give you a rougher ride than needed but may not grip the road as well at over pressure.

scrubjaysnest wrote:
Check the RAM and/or tire manufacturer web site.

The tire manufacturer will recommend what truck manufacturer's door placard states.. The truck manufacturer will ask what your door placard reads..That's what they'll go with. I know, I've had conversations with tire both tire manufacturer about it, General and Nexen.

Jim

Check the RAM and/or tire manufacturer web site.

Same as mine..Ram show this air pressure rating to make sure that those who are too lazy to air up when towing, or don't bother to read their owners manual will be at towing pressure when they tow...80 psi for the front's work well and I personally fill 4 rear tires to 65 because it works for me...tires wear great and my empty weight driving is fine..some who think ride is a little rough will air their rear tires to 45 50 psi...then when towing go back up to 65 psi..you can't go wrong following the recommendations.,,If you think no load riding is a little rough, air down rears, but I'd leave fronts aired to 80 psi.

2016 Dually has same psi recommendation..80 front, 65 rears


Jim