How to Determine Bicycle Tire Size


As one of the most popular forms of exercise and sports on the plant, bike riding not only offers a great way to get in shape, but it is also an eco-friendly mode of transportation. Today's bike enthusiast will tell you that not all bikes are created equal. Similarly, not all bike tires are the same. Not only are there several types of bike tires, but they come in a wide variety of sizes. With this in mind, if you require a new tire for your bicycle, it is important to understand how to determine your tire's size.

Things You'll Need

  • Paperwork accompanying bike Bike manufacturer's web address Wrench
  • Examine the paperwork that came with your bike. Find the information specific to bike tire size.

  • Visit the manufacturer's website. Typically if you provide the model number for your bike, the site will have information on the standard tire sizes.

  • Look at the sidewall of the bicycle tire. Many tires contain an imprint of a number pairing, such as 700 x 26. The first number is the approximate diameter of your tire in millimeters, while the second number corresponds to the tire width in millimeters. Additionally, determining the type of tire on your bike will help you better understand the numbers.

  • If you cannot find numbers on the wheel, you will need to measure the rim yourself. The best way to do this is to measure the tire from rim to rim or axle to rim. Take the number and double it. This will give you the approximate circumference measurement.

  • Using a wrench, loosen the bike tire from the wheel housing. Take the wheel to a bike shop in your area. Employees at a reputable bike shop will be able to tell you the wheel size just by looking at the tire.

Tips & Warnings

  • Mountain bike tires traditionally come in either 26- or 27-inch sizes. This represents the diameter of the wheel's rim. Touring and road racing bikes are generally sized as 650 or 700 mm, while BMX bikes normally have a 20-inch wheel. If you are not satisfied with the tires that are on your bike, a bike professional will be able to tell you the best tire for your biking needs.

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