Operating Pressure and Temperature for Travel Trailer Tires

Updated 10/12/2025 | Published 09/13/2017

Question:

What is the max temperature for travel trailer tires? Trailer tire max pressure?

asked by: John P

Expert Reply:

Trailer tires always indicate their rated psi-pressure on the sidewall. Trailer tires should ALWAYS be inflated to this COLD psi rating under all conditions. It is never appropriate to under- or over-inflate a trailer tire for any reason, such as to compensate for extremes of temperature. Any inflation pressure other than the rated maximum will tend to lead to the tire overheating, and overheating is the single most-common cause for trailer tire failure.

The tire you referenced, part # TTWTRTM2257515D, is to be inflated to 65-psi cold pressure.

The actual operating temperature of a trailer tire will vary quite a bit based on weather, (inflation, as noted), driving speed and the actual weight load on it. For every 10 degrees of ambient temperature change a trailer tire's inflation pressure will vary by about one pound. So if you started out in the morning with cold tires inflated to the correct pressure and stopped midday when the temperature was 30-degrees warmer than it was in the morning, then your tires would show about 3-psi more pressure.

expert reply by: Adam R

John D.

8/12/2024

I have Goodyear Endurance ST 205/75R15 tire on my 7000lb max trailer, after 3 hr travel time my TPMS shows an increase of 8-10 PSI an temps up to 131-133 I have talked to Goodyear and they say their is no temperature waiting on these tires. I am slightly concerned with the high temp on these tires does all this sound ok?

Jesse M.

8/13/2024

@JohnD It is completely normal for the PSI and temperature of tires to increase while driving. Generally you will see an increase of 1 PSI for every 10 degrees. 133 degrees sounds pretty normal for tires during the summer. We generally tell folks that anything over 165 or 170 degrees is starting to get into the danger zone. So everything you are saying sounds fine and safe.

John

8/13/2024

@JesseM Thanks for the assurance

Gary N.

7/1/2025

Shouldn’t I use the sticker psi from the rv company for the correct tire pressure?

Jerred H.

7/2/2025

@GaryN No, you'll want to go off of the specifications of the tire. If they're the original tires the information may be the same.

David M.

9/6/2025

My camper trailer tire is 225/75/R15. Max Sidewall tire pressure is 80PSI. Camper trailer tag “Tire & Loading Informations” recommends 80PSI cold. I have read that tire pressure should not be lower than what the trailer tag states. If I start off with 80 PSI and temperature rises and tire PSI increases accordingly, will that be an issue?

Gwendolyn Y.

9/8/2025

@DavidM You would want to use the PSI rating that is on the tire itself. If you're still using the original tires your camper came with then your trailer tag will show the PSI of those tires. However, If you got new tires or are getting new tires and the PSI rating is different, use the rating that tire is meant to be inflated to, not the trailer tag.

David M.

9/8/2025

@GwendolynY Really appreciate the feedback. Will follow your advice.

Gwendolyn Y.

9/9/2025

@DavidM Anytime! Always happy help so let me know if you ever have any other questions.

Derek G.

10/12/2025

I have a TPMS. When traveling in my 5th wheel the trailer tires good pressure is 80 psi. You state that for every 10 degree increase you should see a 1 psi increase. When monitoring my tires I might see a 20 degree increase in the tires but my PSI increase is 12 psi. By your calculations the increase should only be 2 psi. Should I be concerned with the tires?