? On Tire Pressures

[Shatterz]

Hey All,

 

I've only had my HD a few days now and really loving it. For the time being I won't be hauling a heavy load for a while. Tire pressure on door calls for 60 Front and 72 rear.

 

I decided to set them at 60 front and 57 rear for now, what would you recommend when not hauling?

 

Also, even though the rears are 15 psi lower than what is recommended, I'm not getting a low tire pressure warning on the DIC? How low do they have to be a get a warning?

 

And if it makes any difference I have the LT265/70 R17 tire wheel combo.

 

Any input would be appreciated.

[Roofer]

You could go down to 50 front and rear and see how that does. I wouldn't know why you would need 60 psi in the front with a gas engine. My diesel says 60 psi and it's quite a bit heavier than the 6.0.

[REV353]

The tire company's put it on there so you get the best wear and handling out of you tires. The auto company's will tend to put lower psi to get a better ride. I have talked with nearly every tire manufacture, they say, we build tires and they build cars and trucks. The same goes for the motorcycle industry.

[pennzoil29]

The suggested pressure on my truck was 80# in the rear, and 50# in the front. I assume it was due to the fact that I have a utility bed. However, I didn't even get 40K out of a set of new tires, and yes I rotated them. I'm now running 60# all the way around. Yep, she rides like a truck. Oh wait, it is a truck, it's not supposed to ride like Caddy.

[73LeMans]

The tire company's put it on there so you get the best wear and handling out of you tires. The auto company's will tend to put lower psi to get a better ride. I have talked with nearly every tire manufacture, they say, we build tires and they build cars and trucks. The same goes for the motorcycle industry.

 

Ive always agreed with this philosophy. That said, does that mean we should pay closer attention to the PSI recommendation on the sidewall of the tire rather than the sticker on the truck? I imagine the tire sidewall would be more accurate, but trusted mechanic friends of mine always go to the door to set the tire pressure on their trucks.

 

On all my cars, Ive always used the tire sidewall recommendations - and have gotten incredible life out of them, but Im not towing or hauling heavy stuff with those either. For these HD trucks, which do you think is the best way to go?

[DBVille]

Tire pressure on the sidewalls is the maximum recommended cold pressure. At this pressure (measured cold) the tire is designed to handle its rated load. Using this pressure, in many cases, will cause the center of the tread to wear, and a much rougher ride.

 

The tire pressure by the vehicle manufacturer is recommended for normal loads and ride comfort and equal tire wear. It may have a higher pressure stated for increased loads. If not, then the pressure is adequate for the vehicle's rated load.

 

This is only for the tires that came on the truck. Other tires may need more or less pressure than the manual lists!!

 

If the wear is ok, and the tires don't feel like they are going to roll under, then the lower pressures you are running should be fine. I would probably run a little less pressure, buts that just me. I am running 45 psi on my 2500 Suburban with the same size tires.