Decoded notation
185 mm / 65% / R / 15 in
Popular Tire Sizes
185/65R15 Tire Size — Dimensions & Revs
Decode 185/65R15 and calculate nominal width, sidewall, overall diameter, circumference and revolutions.
Calculated dimensions are nominal values based on tire-size notation; actual measured dimensions vary.
Width185 mm
Sidewall height120.3 mm
Rim diameter15 in
Overall diameter621.5 mm
Overall diameter24.47 in
Circumference1952.5 mm
Revolutions per mile824.2
Revolutions per km512.2