PSI when using higher load range tires.

MFL wrote:
javatoto said: "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."

These statements make no sense! Overloaded ST tires will handle less load, with reduced air pressure.

ST trailer tires with 8-12 psi reduced pressure will run even hotter, in extreme heat.

Is this maybe just a troll first post?

Jerry

I just ASSUMED it was a troll post .... Who in their right mind would drop psi on heavier weight trailer?? That goes against ALL logic

javatoto said: "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."

These statements make no sense! Overloaded ST tires will handle less load, with reduced air pressure.

ST trailer tires with 8-12 psi reduced pressure will run even hotter, in extreme heat.

Is this maybe just a troll first post?

Jerry

javatoto wrote:
Before les Schwab guys would tell me 80 but kept blowing tires 5-6 per year

Assuming we are talking about an RV with 4 tires and the tires are rated for 80psi...something is seriously wrong if you are blowing 5-6 tires per year.

At best dropping the a few psi is masking the real issue...or there is more to the story.

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

TheOMB wrote:
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 65.

Should I run 65, 80 or other PSI?

Visually the Load Range E look better at 80 PSI without a slight bulge.

So none of the 3 pages of responders can even give you any sort of sound advice as you haven't even posted what the trailer axle loads are (approximately, at least).
Some responses off topic, others, a reflection of anecdotal experience, and others, well, I'm not sure....
I can't answer your question either, since I don't know even remotely what your axle loads are, but reasonably, if D load tries were sufficiently carrying the load as designed at 65psi, then you have zero need to raise pressure beyond what you were running before, regardless of whether the tires have a greater max psi rating.

Trailer tires do NOT necessarily need to be run at max sidewall pressure, if the tires are rated significantly higher than the load they're carrying.

The weekend warrior, less than informed responses, will tell you that even though it is 100% untrue.

Post your weights, or find them and use a load pressure chart and decide for yourself what is acceptable by design (the chart) and what feels good going down the road.

I'm too lazy, or don't care enough to look at the inflation charts.
You think you need the weight carrying capacity of the heavier tires? I would be surprised to learn you get added capacity without increasing the pressure.

MFL wrote:

ford truck guy wrote:
Make sure of your wheel’s pressure rating before pumping to 80 psi

If you remember my wheel rating thread earlier this year, I solved the problem by ordering new E-rated tires, already assembled on high quality Vesper wheels, with high rated stems too.

Cost more, but nice to have delivered to my door, and easy to switch myself, right at home.

I donated the other tires/wheels to a relative that was happy to come pick them up.

Jerry

I know your ok Jerry, I remember that thread.... I wanted to make sure the OP knew that not ALL wheels are created equal....

I have the Goodyear Endurance and run them at 80psi as they suggest.

TheOMB wrote:
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 65.

Should I run 65, 80 or other PSI?

Visually the Load Range E look better at 80 PSI without a slight bulge.

:) Hi, I just did the same thing. I had Carlisle D rated ST tires on my trailer. At 80 lbs. it would most likely destroy my trailer. At 65 lbs. my E rated Goodyear Endurance tires have the same load rating as D rated tires do at the same pressure, 65 lbs. I set mine at 65 lbs. and the stiffer tire shook things loose that never happened before. I lowered them again, this time to 55 lbs. and all is well again.

Note: my trailer has a GVWR of 6,300 lbs. My pressure setting would most likely be too low for a heavier trailer.

According to the Goodyear Endurance inflation table, My size tire at 55 lbs. inflation = 2,270 lbs. each, X 4 = 9,080 lbs. That's more than enough for my trailer.