How To Measure A Bike Tire Tube
Next multiple the radius by 2 to get the diameter.
How to measure a bike tire tube. The basics of bike tire sizing duration. Tips regarding bicycle tire and rim sizes. 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. Learn what tubes will fit your tires if you can t find the exact right size.
For example 26 x 1 87 indicates that the wheel is 26 inches in diameter and 1 87 inches in width. 26 x 1 95 2 125 indicating that the tube is intended to fit a 26 inch tyre with a width of between 1 95 inches and 2 125 inches. Bicycle tire measurements have two different parts. Below we prepared a tabel with rim sizes of 4 different bicycle types and their equivalents in inch etrto and french standards.
23c 25c and 28c their width in mm. Inspect the side of the tire that needs a replacement inner tube. If your tires are dirty or worn it may be difficult to locate the print. 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.
Because the stated tire width is usually slightly larger than the actual tire and because the tube stretches tubes close in width serve just as well. 27 5 x 1 9 2 3 for example. The letter at the end of a tire size is a throwback to an old french system when the letters a b and c designated different inner tire diameters it does not stand for cm. Tubes because they can stretch will list a range of widths.
This video explains how to determine your tire size and rim width size so that you can select the right tannus tires. Before measuring it s good to know what the numbers indicate in the first place. Bike tube sizing essentially mirrors bike tire sizing with one exception. The tire size is printed on the side wall of the tire.
Bike tires 101. Road bike tires generally come in three widths. For example choose a tube for a mountain bike if the width is within inch of the tire s stated width. How to get the right bike tube and valve size.
Generally speaking the width of the tire should remain within the interval obtained by multiplying the inner width of the rim with 1 45 and respectively 2. To measure a bicycle wheel start by standing the bike upright by leaning it against a wall or using the kickstand. When it comes to choosing width there are two major factors at play. The larger number is the tire diameter while the smaller number is the tire width.
Different bike types use vastly different sizes. 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.
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