WEBOur tire calculators and charts allow you to convert sizes, quickly compare specs like diameter, width, sidewall and circumference, or even check your speedometer error and effective differential gearing changes.
WEBCalculate metric or inch tire specs and compare to alternate tire sizes. View size results with our tire visualizer and side by side comparison including speedometer error using the comparison tab.
WEBCompare metric or inch tire specs side by side and view with our tire visualizer. Also find vehicle speedometer error and available alternate tire sizes.
WEBThere are two ways that tire manufacturers display tire size, inches and metric. How to read tire size in inches is very straight forward. Example A : 33X12.50R15 The first number is …