tire pressure

Rich&Mar wrote:
do you run the max pressure in your tires as written on the sidewall? I have the Endurance, and it states 80# psi. Seems to me you need to take the outside temperature into consideration. I an reluctant to inflate to 80 psi and go on the road when it's 90% out. Then it becomes a guessing game, what psi at 90, at 75, at 45 degrees. 8200lb 5er. The sidewall does read, max pressure, so should you put less due to the temp? Or let the pressure go well over the 80 because of the heat?

Rich....best pressure for long service life/mileage for tires on a trailer depends on OEM axle capacity along with actual scaled axle weights.

However if no scaled axle weights then use the trailers OEM axle size numbers with maybe 10-15 percent max reserve capacity mostly to help eliminate side stress internal issues when tire on a multiaxle trailer side scrubs going around corners or tight backing maneuvers.
If the Endurance are the OEM size and load range then use max sidewall pressures.
If the trailer is over tired (D to E) then use Goodyears minimum tire pressure/load charts and add 10-15 psi to that number at a minimum.

I've found tires with lots of service life/old tires can rupture from over pressure vs a new tire. Tires like that has lots of bruises = weak spots....and lots of stories to tell.

I have run my trailers tires at max sidewall pressure for over 30 years with no blowouts or even a flat tire. If I were still towing today I would continue that practice. Most trailers are loading the tires to very near their maximum load and the tires need all the help they can get. I also upgraded my tires and rims from stock "C's" to "E's" as the tires wore or aged out.
Barney

MikeRP wrote:

fj12ryder wrote:

TxGearhead wrote:
Always run trailer tires at max pressure no matter how many axles.
...

Maybe if you're running ST tires, but I run my Sailun "G" rated tires at 95 psi rather than the 110 psi that is the max pressure. Makes for a much smoother ride. And with 2000-2500 lbs. per wheel I don't need to run the max pressure.

I was just wondering if you only have 2500 lbs per tire, why did the manufacturer put g rated tires on your rig? I agree you probably don’t need to run that weight at max pressure. I’m probably at 3000 lbs per tire loaded.

It's a triple axle toyhauler that came with "E" rated ST tires from the factory. They were the notorious "China bombs" and I had two blow out within 2 years. I wasn't about to go back with another set of ST tires, and LT tires would have been okay, but not great. So I went with the Sailun "G" rated tires. When I bought them, they were labeled "LT" tires, but stated on the sidewall: "For Trailer Use Only", and now they're labeled "ST" tires.

MFL wrote:

CapriRacer wrote:
Just so everyone knows: The burst pressure of a tire is many times the max pressure. Unless a tire is on fire, there is no risk of the tire bursting on its own without it being damaged by some object - even in Death Valley!

Interesting...I know it would vary, all ST tires not being equal, in quality and design, but what would you consider a possible psi bursting point of the OPs GY Endurance E-rated tire, if air is continuously added? I know you can not give an exact psi, but maybe a range of psi guess?

Jerry

Over 200 psi!

The reason, why maximum pressure of tire is given as advice, is tocover misjudged weights on tires, and inacurate reading of pressure ( wich is often worstcase scerario to high read) .

Also in this topic you estimate the loads on tire, weighing most likely prooves you wrong and to low yudged.
And then when axles weighed, unequall weightdivision R/L wich makes one tire even more weight on it.

But if you weighed best per axle-end, with still a reserve added, a lower pressure probably is yust as safe, and no screws or rivets trembling loose.

fj12ryder wrote:

TxGearhead wrote:
Always run trailer tires at max pressure no matter how many axles.
...

Maybe if you're running ST tires, but I run my Sailun "G" rated tires at 95 psi rather than the 110 psi that is the max pressure. Makes for a much smoother ride. And with 2000-2500 lbs. per wheel I don't need to run the max pressure.

I was just wondering if you only have 2500 lbs per tire, why did the manufacturer put g rated tires on your rig? I agree you probably don’t need to run that weight at max pressure. I’m probably at 3000 lbs per tire loaded.

I’m running G rated Westlakes on my Cedar Creek about 5500 miles now. At 110 psi, in very hot weather, my tire pressure goes up to around 125 psi and 100 degrees temp. At a rest stop the tires heat up to around 125 degrees w very little pressure gain and then cool back down to 100 degrees when I’m back on the road.

For a short recent trip my tires were at 105 psi cold. It was hot outside like 88 degrees but not as bad as the above numbers which the outside temp was over 90 degrees. I got to around 118 psi but the temperatures were around 104 psi rolling. Still good numbers but I’d rather have the psi be greater and the temperature cooler. So I’m gonna air back up to the max pressure before my next trip.

The Westlakes have a bad rep I understand for E rated tires but these g rates tires seem to be holding up very well talking to other Creek owners.

So my advice is to run max pressure on your trailer, there is less sidewall flex and cooler temps which seems to me to be a positive thing to prevent blow outs.

TxGearhead wrote:
Always run trailer tires at max pressure no matter how many axles.
...

Maybe if you're running ST tires, but I run my Sailun "G" rated tires at 95 psi rather than the 110 psi that is the max pressure. Makes for a much smoother ride. And with 2000-2500 lbs. per wheel I don't need to run the max pressure.

Trailer tires get the max. Fill when cold. Best in the morning before you roll and before the sun is on them. Trailer tires are generally maxed out on load and need full pressure. This goes no matter the number of axles.

Always run trailer tires at max pressure no matter how many axles.
Don't chase the pressure depending on weather.
Trailer and truck tires can easily have 10%+ pressure increase while driving.