Rad Carsten shows it

Felgenquerschnitt Rim width

Applicable for the used tires are diameter and width of the rim. The rim diameter is calculated between the shoulders of the rim. He equates to the inside radius of the used tire and is declared in inch.
Radialreifen
 Buildup of the radial tire

The cap of tire makes contact with the lane. The tread contains the profile design and the fins who are unequal by summer and winter tires.