Tire pressure

37chief

Well-known Member
Location
California
My load range E tires are rated for 80 lbs, will they last longer if I keep them inflated to 80 lbs? I use the pickup mostly for hauling my mowing tractors. Should I drop the pressure when I am not pulling my trailer, and tractor, or leave them at 80 lbs? Stan
 
I couldn't tell you if it helps increase tire life by reducing air pressure. I keep mine at 80 lbs.all the time but they may get down to 70 or 75 lbs. after setting over winter. I have 10ply tires on my truck that have been on for 10 years (40,000 miles) and kept at 75 lbs. all year round and have yet to show signs of weather checking.
One thing that will help tire life is try to keep direct sunlight off of them as much as you can the UV rays are hard on tires.
 
Stan.......hows yer kidneys??? I drive a 3/4-T Dodge Cummins Diesel automatic and I vary my tire pressure depending upon the load. Runnin' around town to the ranch, its 55psi FRONT and 40psi REAR. When haulin' a 7000-lb trailer, its 60psi FRONT and 60psi REAR. Trailer's checked to 55psi. I gitt 100K miles to a set of tires. I check the tire pressure in the morning while the tires are cool with my personal gauge. I don't trust the fillin' station gauges. Some tire places are "boastin" nitrogen fill'em-up. Ain't worth the extra cost, 'cuz it juss' leaks out too. Its biggest advantage is stable pressure when HOT. Moisture in regular air is what causes most pressure increase when HOT. 'course, iff'n yer lazy, leave'm at 80psi. NEVER BLEED a HOT tire 'cuz it registers over-pressure. Thats juss water in the tire air. ........the tired Dell
 
I don't run mine that hard unless I am loaded heavy. And I get good life. Over inflated tires will wear in the center. Under inflated will wear on the edges. And of course, grossly under inflated tires will run hot and fail. Watch your tires. They will tell you.
 
Better check your rims. Some rims with 10 ply tires on them are only rated for 60 lbs of air. Not sure if it'd hurt anything, but something to check.
AaronSEIA
 
I run 78# front, 50# in rear duals with 10 ply tires on a 93 D350 Dodge loaded at 9,400# most of the time. These pressures give me even temperatures with an infrared temp gun across each tire after 30+ minutes of running at highway speeds. Lower pressures will give even temps across each tire in a pickup with a lighter load on each tire. It is my hope that even temps across each tire will provide the longest tire life. Mel
 
Depends on the truck and the load. My 90 Cummins every time I have tires put on it I tell them 40 psi rear they put 80 in them trying to kill me. Why try to kill your customer I don't know. Doesn't seem like a good practice. Get over 50 psi and the rear wants to,step out on you when,empty.

When you are empty do a short burnout on pavement. When the black mark is even from side to side you are at or near ideal pressure for the weight. If the middle of the mark is darker you are overinflated. If the edges are darker you are under inflated.
 
The best tire pressure is the one recommended on the sticker that is on your truck. Sometimes it is on the inside of the glove box, sometimes on one of the door jambs.
The factory recommendation is based on testing at various loads and conditions when the vehicle was designed and built. Running overinflated or underinflated will only accelerate tire wear and possibly result in dangerous handling characteristics.

Also, the pressure stamped into the sidewall of the tire is the MAXIMUM PRESSURE for the MAXIMUM LOAD. it is NOT the "proper" inflation pressure.
 
Air pressure what's that? LOL

Air pressure should stay at recommended specks. cold and hot
if run to low it causes tire wear on the inside and outside edges of the tread,
if run to full it causes tire wear in the center of the tread.
Fat
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top