Forum Discussion

crcr's avatar
crcr
Explorer
May 04, 2013

Need recommendation for tire pressure for TT tires

Hi,

We have a 21.5' Travel Trailer, with a GVWR of 4769. We are getting ready for our first camping trip of the season, and I'm looking for a recommendation of how many pounds of pressure to carry in the 5 tires, 4 on the ground plus a spare.

Here are some stats on the tires: Brand is Karrier, "for Trailer service only", Tubeless radials, Size is 205/75R14, Load range C, Max pressure, 50 psi cold, and yes, made in China. The TT is only a year old now, and these are the OEM tires. I understand the principle that more pressure in the tires means cooler running temps for the tires, but the trade-off is a rougher ride for the TT and its contents. We travel only 120 miles each way throughout the summer to our camping spots where we stay 3 or 4 days, then return. The roads are pretty much all paved and of good quality. However, we live in Phoenix, AZ, and tow to the high country, so at the lower elevations in summer, temps can be 100 degrees or more, though we leave early enough going or coming to avoid towing in over 100 degree temps.

The tires are all currently sitting at 37 psi cold. I'd be interested in any recommendations as to what pressure to carry in them throughout the summer. Thanks much for any input.
  • Have same tires on bigger trailer. I always have them at 50 psi and they are still good after many thousands of miles.
  • I all my vehicles I put the max tire pressure that is on the tire's sidewall when towing. I air up the tires in the morning before the sun heats them up.
  • All of the ST tire manufacturers websites that I have checked call for max pressure indicated on the tire sidewall.
  • mbopp wrote:
    50 PSI

    Correct. Don't worry about a "rough ride." You are not in the trailer and your stuff won't mind if you have packed correctly.
  • enblethen wrote:
    What is actual weight of trailer loaded for the road?
    I would guess around 45 pounds+.


    I have never weighed it ready to camp, but I would agree -- my best guess would be 4500 lbs or a bit more.
  • What is actual weight of trailer loaded for the road?
    I would guess around 45 pounds+.