Conversions

Checkout Dimensional Conversions tables

 

Sizes are expressed differently according to the various standards or uses.

MTB and City tire sizes are given in inches. In this example: 26 x 1 1/8 x 1 1/2, the first number (26) is the overall tire diameter. The second number (1 1/8) is the height of the tire in inches and fractions of an inch. The third number (1 1/2) is the tire width in inches and fractions of an inch.

French sizes are used for Road tires. In this example: 650 x 32A, the first number (650) is the overall diameter of the tire in millimeters. The second number (32) is the tire width in millimeters. The letter A indicates that the rim is 590 mm.

ETRTO (European Tire and Rim Technical Organization) sizes are given for all tires. In this example: 32 x 590, the first number (32) is the tire width in millimeters. The second number (590) is the tire diameter in millimeters. This chart shows the conversions for all the sizes.

michelin conversion tables uk 1

michelin conversion tables uk 1

michelin conversion tables uk 2

michelin conversion tables uk 2