Compare205/45 R16 vs 205/55 R16. Tire Size and Comparison Calculator calculate tire diameter from code and compare speedometer differences for tire sizes. The first (generally preceded by an "R") is Rim Diameter in inches. This is the diameter of the rims bead seat base, not the diameter of the outer rim edge. The rim edge, or lip, extends i7ihPA.

205 55 r16 rim size