Tip - How to Measure a Bicycle Tire | LIVESTRONG.COM

Bicycle tire measurements have two components. The larger number is the tire diameter in inches, and the smaller number is the tire width in inches. Tire diameter usually ranges from 12 to 26 inches, and tire width normally ranges from 1.75 to 2.215 inches. The International Organization for Standardization (ISO) has developed another bicycle tire...