Select both tyre sizes and click Compare to see a visual comparison with measurements.
Not sure of your size?Every tyre has a size printed on the sidewall in the format Width/Profile R Rim. For example, 225/45R17 means: 225mm wide, 45% aspect ratio, fits a 17-inch rim.
Enter your current tyre size (Size 1) and the new size (Size 2), then click Compare. The calculator shows the difference in diameter, width, sidewall, circumference, and revolutions per kilometre. If unsure, contact our team at Carter's Tyres Pukekohe.