What psi do you guys run your m/t and such on road for normal daily driving? I have heard 25-30 or the 35 max pressure in some tires? What is optimal for longer treadwear?

 

i run 35 psi in my tires

 

this is a very subjective question, there is no set psi for anyone to run every tire at.... no 2 situations or vehicles or conditions are ever the same.... industry standard on a truck/suv is between 30-35 psi with 32 being the general rule of thumb

i currently have 31s on my truck and i am running them @ 50 psi which is the max for the bfgs i have, for best fuel economy, eventually this will wear down the center part of the tread, but i have mroe tires in the backyard i can switch to when that happens..... tires vary in max pressures so check the tire itself for max inflation... some max out at only 35 psi, otehrs 50, others more

 

32psi

 

I run 32 to 35 Highway and Air down to about 25 off road. Depending on the terrain of course.

 

with my 36" swampers, I run about 28 for normal conditions. I tried 35 on the highway and it was too stiff and rode bad.

 

On my AT's, I run 38 but they're brand new and I wanted to try out a couple of different psi's before I stuck to one. 34 is next and according to Jason B, moving from 32 to 34 for him gained him 2 extra mpg.

 

285 MT/Ts 35 psi on road

 

My Kumho MT's have a max load rateing at 50psi. When hauling in my pickup i run 45-50psi. fronts are 35-40

trail pressures in the 18-25psi range depending on how much ground clearance i need

 

so for better mpg, run the tires closer to max pressure?

 

35 Psi.

 

that will get better mpg, but at the sacrifice possibly of ride quality and tires going bald in the middle mroe than the edges

 

The only thing that comes to mind with 50 P.S.I. in your tires is an increased change of a blow out. You don't drive to save gas.

 

what is my increased chance of a blow out? the tires are rated to have 50 psi cold in them.... i actually run 44 psi cold... but used 50 as a general number... i don't drive t osave gas, however, i do a lot of hiway driving and at the pressure i run at my truck is awesome on the highway.... the 3.07 gears and the around 31" tall of my 31" tires helps out on gas mileage and top speed

 

i run mine at 20 psi

 

Because you run them at their max, you have less margin for the tire holding up to the inevitable stresses of driving. Cornering, braking, going over railroad tracks, etc. 50 is usually for carrying heavy loads.

 

Lessee, I have 15.5 in one, 21 in another, those are the rears. Then 18.5 in the right front and 37 in the left front. After I get the 'steering' and 'alignment' and 'rear diff whine' problems fixed, I'm adjust that air pressure...Might even buy some new tires, get all 4 of them the same size this time...

 

thats why I said the closer you are to the max pressure, obviously its not smart to run them at max psi. the rest is just personal prefference of ride credability...

 

thatnks for helping me process...

 

From this site I found out about the "chalk test" and tried it out on my BFG A/T's. I found that around 45 psi was the optimal for my tires. Too much and the center will wear quickly and give a rough ride. Too little the outside tires wear faster and loses gas mileage.