What Size Tires Do I Need For My Keystone Premier 33' Travel Trailer?  

Question:

Expert Reply:

Hello Michael. I can certainly point you in the right direction, but there is no way to look up your trailer to know what tires size you will need. Trailer manufacturers just don't list this kind of info online.

If you take a look at your trailer, the tire size will be indicated on the sidewall of the tire. For example, it should say something like ST205/75R15. Each tires has its own PSI rating, and the ST205/75R15 tires such as the Karrier Radial Trailer Tire # AM10245 has a max PSI rating of 65 PSI. The PSI rating for a tire should also be listed on the sidewall.

The best way for you to determine what will be right for your trailer will be to just look at the tires. If you can let me know your tire size I am happy to make a recommendation for a new tire. Feel free to reach out if you need anything else.

expert reply by: Jesse M

0

Jesse M.

1/12/2026

Hey Michael, were you able to find the tire size and PSI listed on your trailer’s tires? Once you had that info, did the Karrier radial tire end up being a good match? Your update could make it easier for others checking their own trailer tires.