How To Measure A Bike Tire For A New Tube

Inspect the side of the tire that needs a replacement inner tube. So a 29 inch mtb tube will have the same diameter as a 700c road wheel while a 27 5 inch tube will be the same diameter as a 650b road wheel. The tire size is printed on the side wall of the tire.

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Next multiple the radius by 2 to get the diameter.

How to measure a bike tire for a new tube. The sidewall is the area of the tire next to the rim on either side that does not touch the ground when the bike is in motion. In this guide daniel lloyd takes you through the differences between schrader and presta valves how to work out which tube size your bike requires and how to decide on the material. While you can find a variety of bikes with wheel sizes ranging from 16 to 27 5 inches the most common sizes include 26 inches 27 5 inches 29 inches and 700c. Inspect the sidewall of the bicycle tire that needs a new tube.

Bike tube sizing essentially mirrors bike tire sizing with one exception. Mountain bike tyre sizes are usually stated in inches. In this video katie shows you how to tell which size inner tube is right for your tire. For example 26 x 1 87 indicates that the wheel is 26 inches in diameter and 1 87 inches in width.

To measure a bicycle wheel start by standing the bike upright by leaning it against a wall or using the kickstand. 27 5 x 1 9 2 3 for example. Tubes because they can stretch will list a range of widths. The tire size will be printed there in raised numbers along with the recommended tire pressure and possibly other information.

How to get the right bike tube and valve size. Check it out and to learn about how much pressure your tire needs watch that video here. If your tires are dirty or worn it may be difficult to locate the print. Then use a tape measure to measure the distance from the ground underneath the tire to the center of the wheel to get the radius.

Finding the right inner tube depends on the size of the tires on your bike. Thus you need to be sure any new bike tube has sizing that has a width range that aligns with the sizing on your bike tires.