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Tire pressure #14538460 11/17/22 03:46 PM
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Richard G Offline OP
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I had to replace a tire on my dual axel trailer. When I got the wheel back from Discount Tire they have the tire pressure at the manufacturer max pressure of 65 psi. I've been running tire pressure at 50 psi. Should I run all my tires at max psi or drop the new tire down to 50 psi?

Thanks....Richard


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Re: Tire pressure [Re: Richard G] #14539006 11/17/22 10:00 PM
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Run the tires at the manufacturers recommendation. If you have different tires, run them at what each tire says.

Re: Tire pressure [Re: Richard G] #14539057 11/17/22 10:35 PM
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The tire manufacturer's recommendation, raised on the sidewall, is the max pressure for which the tire is rated. Not the same as the recommended tire pressure.

On a vehicle, the vehicle's recommended tire pressure is usually on a sticker on the door jamb. On a trailer, I'm not sure. Look it up. But definitely not the max pressure on the sidewall.


"Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming "Wow! What a Ride!" ― Hunter S. Thompson
Re: Tire pressure [Re: diggerwolf] #14539327 11/18/22 03:05 AM
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Run your trailer tires 5 pounds under the max psi for your particular tire. Reason being is as the tire heats up when rolling down the road, it actually increases the air pressure in the tire, usually 2-3 pounds. I run Carlisle radial trailer tires on my boat trailer, never an issue. I would advise not running your air pressures 15 pounds under the max PSI of the tire, your asking for problems and prematurely wearing out your tires

Re: Tire pressure [Re: n_fish] #14539433 11/18/22 11:51 AM
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Originally Posted by n_fish
Run your trailer tires 5 pounds under the max psi for your particular tire. Reason being is as the tire heats up when rolling down the road, it actually increases the air pressure in the tire, usually 2-3 pounds. I run Carlisle radial trailer tires on my boat trailer, never an issue. I would advise not running your air pressures 15 pounds under the max PSI of the tire, your asking for problems and prematurely wearing out your tires


False, tire manufacturers know this and the max pressure is for cold readings.

Re: Tire pressure [Re: tmd11111] #14540179 11/19/22 12:37 AM
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Originally Posted by tmd11111
Originally Posted by n_fish
Run your trailer tires 5 pounds under the max psi for your particular tire. Reason being is as the tire heats up when rolling down the road, it actually increases the air pressure in the tire, usually 2-3 pounds. I run Carlisle radial trailer tires on my boat trailer, never an issue. I would advise not running your air pressures 15 pounds under the max PSI of the tire, your asking for problems and prematurely wearing out your tires


False, tire manufacturers know this and the max pressure is for cold readings.

+1. My skeeter trailer states a specific load range E tire. A 225/75-15 ST load range “E” tire has a max cold inflation of 80psi. My trailer sticker says “80psi cold” as well. It’s not a coincidence.


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Re: Tire pressure [Re: Richard G] #14540423 11/19/22 11:46 AM
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I run load range E 33" on my f150, rated to 80 psi and I run them at 40 psi, the ride is much better and the tires will make it to their 55,000 mi. claim.

my trailer tires are rated to 65 psi and I run them at 35 or 40 max. the boat does not get beat to hell on rough roads due to no flex in the sidewalls.

the max. pressure is for a max. load when you need the support, light loads and high pressure and you will get uneven wear a lot of the time due to the contact patch being center of tread.

run em how ya want, I have never had a problem with wear or longevity running les psi.


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Re: Tire pressure [Re: Richard G] #14540473 11/19/22 01:14 PM
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Always max pressure as suggested on the tire.

Re: Tire pressure [Re: hopalong] #14541064 11/20/22 12:47 AM
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Originally Posted by hopalong
I run load range E 33" on my f150, rated to 80 psi and I run them at 40 psi, the ride is much better and the tires will make it to their 55,000 mi. claim.

my trailer tires are rated to 65 psi and I run them at 35 or 40 max. the boat does not get beat to hell on rough roads due to no flex in the sidewalls.

the max. pressure is for a max. load when you need the support, light loads and high pressure and you will get uneven wear a lot of the time due to the contact patch being center of tread.

run em how ya want, I have never had a problem with wear or longevity running les psi.


What bolt pattern do you have on your boat trailer. I’ll try to carry one of my old spares for when I see ya on the side of the road with a blow out.
roflmao

Just messin with ya.


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Re: Tire pressure [Re: Richard G] #14541655 11/20/22 06:28 PM
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been running trailer tires like that for decades, only blowout I have ever had was when I bought the 184 and it had car tires on the trailer.

when you fully inflate one to max. pressure and run a light load like a boat it will ride a lot rougher since the sidewall can't flex near as much, 40-45 psi is all I have ever run. the champion has a tandem so 2 tires rated at 1500# gives me 3000# per side and with shocks on the trailer it rides nice at 40 current trailer tires are rated at 65 psi.

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Last edited by hopalong; 11/20/22 06:29 PM.

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