TIre pressure during towing vs not towing

wilber1 wrote:
I drop the rears to 45-50 if we are going to be running empty for a few weeks. I carry a Viair 400P 12v compressor that only takes about 3 minutes to get a tire back up to 80.

Compressors are great for other things like blowing out the interior of the TV.

I drop the rears to 45-50 if we are going to be running empty for a few weeks. I carry a Viair 400P 12v compressor that only takes about 3 minutes to get a tire back up to 80.

RinconVTR wrote:

Cummins12V98 wrote:
Most of you are perfect examples of why you never see more than 50-60K on a set of tires. Too much air for the actual load on the rear loaded or solo. Too little air on the front.

But if you want to blindly go by what the mfg says that tries to cover all scenarios by all means do so.

Wow. This might be the most worthless post in the thread.

HMMMM musta hit too close to home!

Cummins12V98 wrote:
Most of you are perfect examples of why you never see more than 50-60K on a set of tires. Too much air for the actual load on the rear loaded or solo. Too little air on the front.

But if you want to blindly go by what the mfg says that tries to cover all scenarios by all means do so.

Wow. This might be the most worthless post in the thread.

In the winter. I reduce the tire pressure to 60 on all four wheels. When the temp drops below 36 the tires do don't flex and truck ride likes a log wagon without the TPS reduction. In addition when there is 6 plus inches of snow on the roads I can get around. However when I tow and the rest of the year I set mine tires at 65 front and 80 rear.

I do run lower air in the rear if I'm going to be staying in one place a week or two. RAM has, at least on the 2011 2500, a 45 lb empty and a 70 lb loaded (rear SRW) recommendation in their manual, and IIRC, on the door jamb, and the TPMS is adjustable by pressing a "Light Load" switch on the dash. With the switch active, it will set 45 lbs as the "set" figure; deactivate the switch and it sets the figure to 70 lbs. And yes, it does make a heck of a difference in the ride when we go sightseeing. As for filling them back up? I carry a 120v twin tank aluminum air compressor in the front compartment with coiled air hoses (2x25') that will reach every tire on the truck and trailer. Takes about 10 minutes to air back up and well worth it for the ride improvement on the rough roads we tend to like to explore on.

My truck sez to maintain one psi when loaded another psi when unloaded... that was with 2006 air mind you... not modern air.

I don't even pay any attention to what my manual says, or the sticker on the door, since I have a slightly different tire on than came on the truck OEM. I go by what the tire manufacturer says.

Being full time about 80% or more of my miles are towing. Front stays between 68 and 70 and rear stays at 78 to 80. Try to get tires rotated every other oil change. I always adjust my own pressure after rotation just to make sure it is right.

Just remember when you check your tires for "cold pressure", like after the vehicle has been sitting, the actual outside temperature makes a huge difference in your readings also.

I have TPMS on my fiver tires and the cold pressure in my G614's in the morning in Illinois two weeks ago (outside temp in the 30's) was around 90 per tire. Right now in northern Florida with warmer morning temps they are showing 93 or 94 when hooking up.

Me Again wrote:
Pipeman, 50 in the front seems low! What size are your tires?

Chris

I totally agree. To me 65-70 would be a good psi on a DMAX Dually.

On my new Dually I will be running 40 solo rear 60 loaded. 80 front all the time.

Pipeman, 50 in the front seems low! What size are your tires?

Chris