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Travelin2's avatar
Travelin2
Explorer
Oct 22, 2017

need opinions on tire pressures

We have a little 19 foot 2014 Bullet Premier I just put on a complete new set of the Goodyear Endurance 205/75R X 14 tires. They have a "D" load rating, putting their single max load single at just over 2000 lbs. at the max inflation of 65 psi. The original tires were the same size but with a "C" load rating. They had a max load single of just over 1700 lbs. at max pressure of 50 psi.

The trailer has an empty weight of 4200#. I figure by the time I get all our junk in it and all the fluids topped up, we will probably be in the neighborhood of 6000#. That is 1500# per tire.

I would like to hear what you guys think would be a good pressure to run in these new tires. Running at max pressure would, in my mind, make for a harsher ride for the rig and it's contents.
  • Inflate ST trailer tires to the max pressure on the side wall. One of the worst enemies of trailer tires is side wall flexing. This will cause the trailer tires to over heat. Overheating can lead to blowouts. Max inflation stiffens the sidewalls. A squishy tire sidewall will also allow a small amount of sway adding to tire flexing and the overall sway of the trailer.
  • Follow manufacturer’s recommendation...65 psi...unless you are a trailer tire manufacturer, engineer, expert etc.
  • I have always inflated trailer tires to the maximum shown on the sidewall.
  • First of all, some of the weight (about 12-15%) is tongue weight and goes onto your tow vehicle...

    I always pressure my trailer tires to their max rating....don't care if the ride is somewhat harsh. I'm not riding in it. We also have shocks on all for wheels.

    Max pressure lets them run cooler and thus less chance of failure. As far as the "wear" argument...They reach age replacement long before the tread wears out.
  • Travelin2 wrote:
    We have a little 19 foot 2014 Bullet Premier I just put on a complete new set of the Goodyear Endurance 205/75R X 14 tires.

    I would like to hear what you guys think would be a good pressure to run in these new tires. Running at max pressure would, in my mind, make for a harsher ride for the rig and it's contents.


    I installed a set of 205/75R14 Endurance a couple of months ago on my Coachmen Freedom Express 192RBS that averages ~ 4800 lbs loaded & ready to camp ... I run these tires with the recommended cold inflation of 65 p.s.i., no harsh ride at all. Can't imagine why you'd want to run any less.