Question for those on here with the HD payload package: what tire pressure are you running unloaded? So far I have not changed mine - it is around 55-60psi as it came when I got it, which is pretty much in line with what it says on the sticker for max load, I believe.
Should be able to go lower when empty - and improve tire wear & possibly the ride a little, but I have been unable to find a load / pressure table for the Rugged Trails on BFG's website.
So has anybody seen a table like that, and what pressure are you running them empty?

 

I'm running mine at 55 front and 60 rear. This Monday on the way to work (3 days old then) I had a low tire pressure warning light come on. I had to add air to get rid of the warning light. I don't think the dealer filled them up all the way and that is why I received the warning light. Running anything lower might cause warning lights and I'm not sure what the minimum is to keep the TPMS happy. I would like to run lower any may try to lower it by 5 lbs and see what happens.

 

I run mine about 5 psi under the max listed on the tire. Can't remember what that is and my wife is using the truck right now so I can't check. I did this on my F250 and always got good wear on the tires.

 

Wow, msalyer, that would be 75 psi (80 psi max is printed on sidewall). That may be a bit much for our trucks, no? I think my door sticker says 55 front / 60 rear, and I was actually thinking about lowering that when empty - now you gave it a different direction.

 

at work when we replace tires we always get 10-ply rated tires for puncture resistance. We generally run them at what the door says which is usually in teh 32-35psi range.

we don't haul heavy loads, so the lower pressures work out fine for us, even at pressures low enough for normal tires. the tires will ride MUCH better in the 30psi range. couldn't tell you a thing about tire wear as the roads we drive on generally chew them up and spit them out no matter what you do.

i've run those 10-ply's as low as 20psi in the winter to get a little better bite in the snow and ice. don't put a load on them with that low pressure, though.

i'll bet your TPMS will keep you from lowering them too far beyond what the sticker says.

bottom line, you can pert-near do what every you like when not loaded, as far as the tire is concerned

 

I think it might be 80 psi max. That's what it was on my F 250. I ran 75 psi on that with no issues at all. I did air my F 150 up to 5 under the max before I left for Fla. Feb. 1st and have been running that way since. It might ride a smidge rougher ???? but I'm not sure. I don't know of any problems this would cause except if it rounded the tires and wore them in the center. They still appear to have good full contact. This is just what I do YMMV.

 

Write down the size and manufacturer of the tires, then contact the manufacturer for a chart on how much pressure is needed for that tire, depending on the weight on the tire. Take the truck loaded with a full tank and whatever it will normally carry, including passengers, to a scale and get a weight for each corner (not just the entire axle). Use the higher weight of each axle to determine air pressure for both tires on the axle, using the chart.

Both tires on an axle should carry the same weight however, usually one will carry a bit more than the other. As long as the difference isn't too much, such as the weigh of the driver, just run the recommended pressure for the higher of the two weights. All tires on an axle must use the same tire pressure.

 

Overpressure is as bad as underpressure - overpressure will give you bad wear, bad ride, and poor traction in inclement weather. E-rated tires also don't like being run too low.

Chalk the tire and see how it's wearing. Equalize the tire wear inside to outside and that's the proper pressure to run.

 

I have always had good experiences running the door jamb pressure, however, heavy duty pickups already seem to take into account the fact that you will be hauling a load. I know on my f150 it says 35 all around but my light duty 250 said 50 in front and 60 in rear

 

Thanks everybody.
I think I will try 45 all around sometime when I know I won't be loading her up for a few weeks. Not worth it if I have to go forth and back twice a week.