Quick Trailer Tire pressure question...

[Jgorm]

I've had two different aftermarket tpms on my rv after two blowouts. I spent more time messing with them to get them to connect, replacing batteries, etc than pumping up the tires before every trip. I swapped over to the little valve caps that indicate green at the correct pressure. I like them way better. The better solution is to use decent tires, metal valve stems, and fill up before each trip.

 

[rsg1963]

I run within 5 psi of max and I ONLY run LT tires, never trailer tires. Too many fun days ruined due to trailer tire limitations and problems. I also rarely go 55 mph. Average of 65. Average. So the LT's are even More important for my usage. Go much below the full psi and heat becomes an issue for either type of tire.

 

[veedubtek]

It is really starting to amaze me how many people are virtually swearing you have to run max psi. I highly encourage you to contact your tire manufacturers and see what they have to say.

I played around a little. Using a 242 as an example (4869 base weight on trailer) and assuming 6000 total with gear/fuel. So, ~1500 per tire.

Maxxis recommends 35psi using a 205/75/15 for highway use. (I guessed on the tire size, I can't remember offhand).
Goodyear Marathons also come in at 35 in the same size.
Carlisle is at 40 with their 15" bias ply.

That's just the first 3 that came to mind. It appears all of these charts for all manufacturers are easily found in google (and most don't seem much different). It seems, to get to a manufacture recommended 50psi, you'd have to run a 185/85/13.

As I stated earlier in the thread, I've always just kinda went with the flow and went max. Just something I never took the time to put much thought into. But, I know just how dumb that is on passenger vehicles, and honestly, it doesn't make a lick of sense on a trailer either so I went digging and basically confirmed my thoughts. You're obviously more than welcome to do whatever you want, but a little research yourself and you might just make yourself (and your tires life expectancy) a little happier.