KR Kodi

iTrader: (1)

Yes - that is correct.


Goodyear says my ST tires can run up to 75 mph if inflated 10 psi above the cold max pressure, but that pressure increase does not increase the load carrying capacity.


My trailer TPMS display shows temp and pressure of the 4 trailer tires, and I pay a lot of attention to the hot pressures when towing.


But you and 11screw50 are absolutely correct that the max pressure on the sidewall, or the recommended pressure the trailer manufacturer has on the tire sticker on the trailer, are cold pressures.
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DieselDawg

Actually running too low psi causes overheating because it lengthens the tread that is in contact with the ground...causing more heat build up. Safe to run 95% of max psi as long as you are not overloaded.

meaz93

:agree:

BassAckwards

Trailer tires are meant to run at max cold sidewall air pressure.

This^

tony montana

Wow now you guys have me wondering, my TT when I checked only had 25 psi in all 4 tires.

meaz93

^It's good to check them out periodically.....don't want the belts to separate because of low air pressure and sitting 3-4 months . :frown:

DieselDawg

The increase in heat generated by low pressures is due to more tire tread on the ground...hence more friction. Yes the sidewalls become less stiff and will cause "wiggle"...but the heat comes from ground contact

SkiSmuggs

And don't worry about wearing the center of the tire. Trailer tires almost always age out before they wear out. I believe 5-7 years is the guideline and I would never go beyond 5 years myself, but the tread has always looked almost new.

tomb1269

Make sure to cover your tires when in storage (not in use) will decrease UV break down, as will parking on solid material such as pavement or patio stone, as it will decrease the decay factor as well.

BassAckwards

Not easy or possible for everyone, including me, but if you can put the trailer on jack stands with wheels off the ground and air them down to half the max psi this will also keep the belts from slipping or bunching up from sitting.

Dirt/sand is the worst thing you can park them on, soaks out the oil.