Tire Size Calculator!

Compare tire and wheel specs conveniently and get recommendations for tire and wheel upgrades. Support both Imperial and Metric units. Calculate approximate equivalent car chassis (sprung) weight differences after change to the replacement/upgrade tire+wheel, in either Imperial or Metric units, using the following data: Car Weight (with old tire+wheel) Engine Max Torque Car 0-60 mph/0-96.6 km/h time (with old tire+wheel) Old Tire/Wheel Sizes New Tire/Wheel Sizes Old Tire/Wheel Weights New Tire/Wheel weightsColors of the specs table cells indicate the compatibility of the new tire in that spec: No color: compatible Green: improved Yellow: tolerable Red: not compatible