PSI when using higher load range tires.
My trailer had 4, D load range tires. From advice of many friends I've up graded to E load range. Just got a set of Good Year Endurance with max PSI of 80. Previous tires and trailer sticker says PSI ...
Forum Discussion
javatoto wrote:
Hi hey you did great getting load range E. Ill tell you what I found to be true. If your bit over weight drop tire pressure 8-12 LBS also if hot outside drop pressure 8-12 LBS from stated psi 80 in your trailer. I run 68-72 all the time. Before les Schwab guys would tell me 80 but kept blowing tires 5-6 per year Yeck. Someone finally said to drop pressure and now I almost forgot how to change tires! Yeah. Also get you a ramp when you have a blow out you'll just put behind the back wheel if front wheel blown and back up on to ramp instead of trims Jack leave busted wheel hanging. Be sure to loosen lugs before backing onto ramp. Fast easy safe
Imma go 50/50 on this one.
I could justify dropping pressure a bit for big temperature swings since 10deg = 1-2psi of static pressure change if volume remains the same. But it's not necessary, save for overtly extreme temperature and altitude changes. Frankly, if you had 70-75psi cold, you'll be at 75-80psi by the time the tires get warmed up just from traveling at highway speeds. If you start at 80 cold, the tires will handle 85, 90psi also. It's what they're designed to do.
Too much minutia worried about with tire pressures.
But the drop pressure if overweight is approximately 100% bad information. If anything, raise your pressure above max sidewall. (I'll qualify, I've never done this with 80psi tires, but I do it often with lighter rated truck tires, when the back of the ole 1/2 ton on factory rubber needs to play big truck for the day!)
