Structure And Identification

Identification 

Run-flat tires are identified with the following abbreviations: DSST, Euforia, RFT, ROF, RSC, SSR or ZP. These abbreviations are located on the tire flank behind tire designation of the respective tire manufacturer.

Fig 1: Identifying Run Flat Tires Abbreviation Mark

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Structure 

Fig 2: Identifying Tire Structure

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1 - Bead with bead bundle.

2 - Sidewall

3 - Sidewall reinforcement.

4 - Rim with extended hump (EH2) on both sides - required when using run-flat tires.