Decoded notation
185 mm / 70% / R / 15 in
Popular Tire Sizes
185/70R15 Tire Size — Dimensions & Revs
Decode 185/70R15 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 height129.5 mm
Rim diameter15 in
Overall diameter640.0 mm
Overall diameter25.20 in
Circumference2010.6 mm
Revolutions per mile800.4
Revolutions per km497.4