How do I know what size tire I have?

Federal law requires tire manufacturers to place standardized information on the sidewall of all tires. This information:
  1. Identifies and describes fundamental tire characteristics.
  2. Provides a tire identification number for safety standard certification and in case of a recall.

The tire size is listed on the sidewall where the red arrow is.

Trailer Tire Information:

  • Trailer tires are designated as “ST” tires (Special Tire).
  • Your tire size will start with "ST."

Example: A tire size might be listed as ST205/75R14.