2019 coleman 264RL tire pressure?

I would think that you have duel 3500 lb. axles on your trailer. That being said I would hope that you have at least 20575/15 C load range tires on the unit. I had that size tire when I purchased my Trail Blazer and Coachmen called for the tires to be inflated to 50 psi. My Trail Blazer had a GVWR of 7900 lbs. which is just a little more than your Coleman.

I would try to find a tire mfg. pressure guide and go from there. It would alshelp to have the rig weighed in order to cut down on the confusion.

Most RV trailers come with OEM tires that are just barely adequate to cover the axle ratings when inflated to sidewall pressure indicated.

Unless someone replaced the originals, with a way over rated tire, use the likely 65 psi max. You should have stated the tire size, load rating, and tire max pressure, for best answers.

Even a C-load range tire would be 50 psi, so yes 40 psi is likely low.

Jerry

Take whatever it weighs (gvw if you don’t know actual) divide it by 4, look up the pressure for that weight on a chart.
Or go max pressure for the tires on it assuming they’re the proper ones for the trailer, if you’re not willing to look it up.

Go with the max cold tire pressure that's on the tire.

Then you should start from the basic data.
That is GAWR's and GVWR.but better is to weigh fully loaded(also the persons), per axle, better even per axle-end.

Then I can make a customised pressure/loadcapacity list for your tires, with build in reserves and per axle single or dual or per tire given,so you dont need to do precalculations before looking back in officiall lists.

The recomended pressure you cant read now, is calculated for GAWR with no reserve.

Need from tires next.
1. maximum load or LOADINDEX.
2. kind of tire to determine the maxloadpressure, but if AT xxx psi is given on sidewall, thats what I need. Loadrange is a system to give AT pressure.
3, speedcode, less important.
4. If ST

There is no reason to follow what is on the tire. The internet has all you need to have. I can't understand why people even read or are concerned about the manufacturers instructions when there are so many experts out there that know better. Today's reality. Scary!

Thanks for the replies. I got some more information off the tires:

- ST205/75/R15
- LH-001 (Maybe a Model# ?)
- 8PR 107/102L Load Range D
- Max Load Dual 850kg (1870lbs) at 450KPa (65PSI) COLD


It is a dual axle travel trailer, 6150lbs dry weight.

I'll probably try 65psi.

That size trailer, size tires, they will absolutely run coolest, trailer handle best at 65 psi.

With the scrub/flex of ST special trailer tires, especially on tandem axles, the sidewalls get their strength from air pressure, to keep sway at a minimum.

I'm sure your placard, if visible, would indicate 65 psi.

Jerry

ncladfw3 wrote:
Thanks for the replies. I got some more information off the tires:

- ST205/75/R15
- LH-001 (Maybe a Model# ?)
- 8PR 107/102L Load Range D
- Max Load Dual 850kg (1870lbs) at 450KPa (65PSI) COLD


It is a dual axle travel trailer, 6150lbs dry weight.

I'll probably try 65psi.

Do you mean by dual axle, 1 axle with 4 tire on it(verry unusuall, but they exist) , or tandem axle so 2 axles with each 2 tires on them.

And can you still read the GVWR and GAWR('s)
( Gross Axle/Vehicle Weight Rating)

- ST205/75/R15
- LH-001 (Maybe a Model# ?)
- 8PR 107/102L Load Range D
- Max Load Dual 850kg (1870lbs) at 450KPa (65PSI) COLD


It is a dual axle travel trailer, 6150lbs dry weight.

I'll probably try 65psi.

65 psi is the best idea for a cooler longer lasting tire.
Those minimum pressures for the load charts work best for cars/trucks/suvs with tires at the front and rear corners.
Your tandem axle trailer tires are set close spaced and towards the center of the vehicle. They side scrub on every turn. Higher pressures helps hold the tires carcass and tread belts together as the tire side scrub on turns.

JFY...the "max load dual" indicates the tire capacity when used in a dual position as in dual on a truck (side by side).

Your trailer is a tandem axle and uses the higher 2040 lb tire capacity at the same 65 psi.

check out Tireman9 https://www.rvtiresafety.net/2018/02/tire-inflation-not-same-for-all-trailers.html
As a actual tire engineer he has the knowledge and experience to explain why different tire pressures are used our trucks vs our trailers. Day of reading on tires for our different rv type vehicles.