General rule for tire pressure?

Cummins12V98 wrote:

coolbreeze01 wrote:

Cummins12V98 wrote:
I will try to be polite here. Anyone that runs MAX inflation on their tires just because the tires say Max inflation are not properly informed. At least run what the vehicle states to run. If you run 80psi on a unloaded pickup you are greatly reducing the stopping ability of the tires and causing the center of the tires to wear out prematurely.. There are weigh stations along every freeway stop and ask them to weigh each axle then use the charts to determine proper inflation for your tires.

Or just blindly run MAX inflation if you want.

Thank-you, thank-you very much......Max inflation has worked for me on several trailers, for over 40 years.

I was NOT talking trailers "If you run 80psi on a unloaded pickup".

If you are running ST's run max for sure but LT trailer tires can be inflated per weight and inflation chart.

Your choice of course.

wandering1 wrote:
Inflate each tire to the manufacturers maximum as listed on the tire sidewall. NOT the trailer or truck door sticker. Follow the tire manufacturers instructions for tires. Real simple.

Once again You can lead a horse to water, but you can't make them drink! :S

My 5er LT's are rated 3,084# ea., I carry 9,000# to 9,500# on the 5er axles, so they are run at 70 psi. Still a little high.

So once again class, the tire on the right is an example of a "E" rated tire without a load in the TV inflated to MAX 80 psi. If you carry less than 3,000 on your rear axle, you are only at HALF MAX pressure. You can run between 40 psi and 50 psi, and get great wear, and traction.



To those of you that complain about needing extra weight in the bed for winter, try running 40 psi in winter, you will be pleasantly surprised!

coolbreeze01 wrote:

Cummins12V98 wrote:
I will try to be polite here. Anyone that runs MAX inflation on their tires just because the tires say Max inflation are not properly informed. At least run what the vehicle states to run. If you run 80psi on a unloaded pickup you are greatly reducing the stopping ability of the tires and causing the center of the tires to wear out prematurely.. There are weigh stations along every freeway stop and ask them to weigh each axle then use the charts to determine proper inflation for your tires.

Or just blindly run MAX inflation if you want.

Thank-you, thank-you very much......Max inflation has worked for me on several trailers, for over 40 years.

I was NOT talking trailers "If you run 80psi on a unloaded pickup".

If you are running ST's run max for sure but LT trailer tires can be inflated per weight and inflation chart.

Your choice of course.

Cummins12V98 wrote:
I will try to be polite here. Anyone that runs MAX inflation on their tires just because the tires say Max inflation are not properly informed. At least run what the vehicle states to run. If you run 80psi on a unloaded pickup you are greatly reducing the stopping ability of the tires and causing the center of the tires to wear out prematurely.. There are weigh stations along every freeway stop and ask them to weigh each axle then use the charts to determine proper inflation for your tires.

Or just blindly run MAX inflation if you want.

Thank-you, thank-you very much......Max inflation has worked for me on several trailers, for over 40 years.

I will try to be polite here. Anyone that runs MAX inflation on their tires just because the tires say Max inflation are not properly informed. At least run what the vehicle states to run. If you run 80psi on a unloaded pickup you are greatly reducing the stopping ability of the tires and causing the center of the tires to wear out prematurely.. There are weigh stations along every freeway stop and ask them to weigh each axle then use the charts to determine proper inflation for your tires.

Or just blindly run MAX inflation if you want.

Run more pressure than you think you need until you can find a scale, then start running the proper pressure. If your camping load is similar you only have to do it once. More is better than too little, but only to a point.

Overinflated tires decrease ride, traction, handling, tire life, and increase your chance of road hazard failures. There isn't a single tire manufacturer that would tell you to run max cold pressure all the time. The people that do that are just too lazy to do it right. Towing TT's changes pressure requirements a lot, 45-80 was my normal pressure change before I got 19.5's but I was going from 3500 to 6000 on the rear axle when loaded for camping.

The easiest way to calculate a good pressure is to use the sidewall railings. 3195 lbs at 80 psi is 39.93 lbs/psi. If my rear axle had 5500 lbs on it that would be 2750 per tire. 2750/39.93 = 68.9 psi. I would set them at 70 for running at speeds of 65+. You will find this method give you a few psi over an inflation chart. A couple psi is fine, especially if you are traveling fast or on a hot day. If I only needed 50 psi for the weight, 70 or 80 would be too much.

rhagfo wrote:


You missed Cummins winking eye, I think he runs his rear DRW's at about 40 to 45 psi.

Sure did... The resolution on my phone screen is so good, it looked like a speck of dirt without my glasses on... we really need a sarcasm font... :)

gijoecam wrote:

Cummins12V98 wrote:

rhagfo wrote:
X2 to BenK's post!!

Those that always run the MAX, are looking for fast center wear, and very low traction when wet, or dry for that matter.

The tires on my TV have a capacity of 13,660#, the TV has a GVWR of 8,800#, I do tow over the GVWR, but nowhere near 13,660#. I adjust the pressure according.

I NEVER tow with more than 70 psi in the rear tires, most times right at 65 psi. I am carrying 5,500# on tires with an 80 psi, rating of 6,830#

Aw you just don't understand!!!

It says 80 PSI on the tires that is what they should be ran at.;)

Before you start hurling insults, you should go read what it actually says on your tires. Generally, they say something along the lines of, 'Max load XXXX lbs at YY PSI.' The only tires I own that list a specific inflation pressure are on my wheelbarrow and bicycle.

There is a reason the entire industry used load versus inflation pressure tables to determine proper inflation pressures...

You missed Cummins winking eye, I think he runs his rear DRW's at about 40 to 45 psi.

Inflate each tire to the manufacturers maximum as listed on the tire sidewall. NOT the trailer or truck door sticker. Follow the tire manufacturers instructions for tires. Real simple.

Cummins12V98 wrote:

rhagfo wrote:
X2 to BenK's post!!

Those that always run the MAX, are looking for fast center wear, and very low traction when wet, or dry for that matter.

The tires on my TV have a capacity of 13,660#, the TV has a GVWR of 8,800#, I do tow over the GVWR, but nowhere near 13,660#. I adjust the pressure according.

I NEVER tow with more than 70 psi in the rear tires, most times right at 65 psi. I am carrying 5,500# on tires with an 80 psi, rating of 6,830#

Aw you just don't understand!!!

It says 80 PSI on the tires that is what they should be ran at.;)

Before you start hurling insults, you should go read what it actually says on your tires. Generally, they say something along the lines of, 'Max load XXXX lbs at YY PSI.' The only tires I own that list a specific inflation pressure are on my wheelbarrow and bicycle.

There is a reason the entire industry used load versus inflation pressure tables to determine proper inflation pressures...

rhagfo wrote:
X2 to BenK's post!!

Those that always run the MAX, are looking for fast center wear, and very low traction when wet, or dry for that matter.

The tires on my TV have a capacity of 13,660#, the TV has a GVWR of 8,800#, I do tow over the GVWR, but nowhere near 13,660#. I adjust the pressure according.

I NEVER tow with more than 70 psi in the rear tires, most times right at 65 psi. I am carrying 5,500# on tires with an 80 psi, rating of 6,830#

Aw you just don't understand!!!

It says 80 PSI on the tires that is what they should be ran at.;)