Typical tire symbols

1 Tire size
2 DOT and Tire Identification Number (TIN)
3 Uniform tire quality grading
For details, see “Uniform tire quality grading” that follows. 4 Location of treadwear indicators
5 Run-flat tire (RFT) or standard tire This vehicle can be equipped with either run-flat tires (RFT) or standard tires. A “RFT” or “DSST” mark is molded on the sidewall of the run-flat tire. 6 Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands which form the plies in a tire. 7 Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire. 8 TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly filled in the tire. A tube type tire has a tube inside the tire and the tube maintains the air pressure. 9 Load limit at maximum cold tire inflation pressure
10Maximum cold tire inflation pressure This means the pressure to which a tire may be inflated. 11 Summer tire or all season tire
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer tire.

• Typical DOT and tire identification number (TIN)
• Tire size
• Tire section names
• Uniform Tire Quality Grading
• Glossary of tire terminology