How To Measure A Bike Tire

Tips regarding bicycle tire and rim sizes.
How to measure a bike tire. How to pick the right size inner tube for a bike. 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. 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. Unless your tire is heavily damaged replacing the tube is usually all you need to get back on the bike path.
Place a tape measure against the center of the bicycle wheel and then extend the tape in a straight line towards the tire s outer edge. Replacing tires may be difficult if you know the size in one system but only find tires measured in the other system. The international organization for standardization iso has developed another bicycle tire measurement system that uses millimeters to measure the width of the tire and the inner diameter also called the bead seat diameter. Don t waste your money.
In most cases riders usually go with whatever bike tire that will come along or leave the task to the local bike shop when it s time to replace or upgrade a tire. A guide to bike tire sizes traditional sizing systems. Mountain bike size chart. A tire size you might see on a road bike.
How to size bike tires to the rim. Mountain bike sizing can be affected by suspension and your tire choices. A flat bike tire is an interruption at best and a disaster at worst. A third type of tire size might appear on either a mountain or a road tire.
So make sure you look at a tire size chart and try a full suspension mountain bike for size before buying. You must know the diameter and width of the flat tire to select the appropriate. Plus the knowledge can prove useful during trail or roadside mishaps. Remember to get yourself a 150 psi portable pressure detection electric bike pump after knowing the right tires to buy for your bike.
To measure a bicycle wheel start by standing the bike upright by leaning it against a wall or using the kickstand. 29 x 2 3 indicates a tire with a 29 outer diameter and a 2 3 width. A tire size you might see on a mountain bike. For standard hardtails our mountain bike size chart should be a god send.
However the evolution of tires and rims has made these measures inaccurate when it comes to compatibility. Stand the bike up using a kickstand or just lean it against a wall. A little bike know how goes a long way. The size of the bike tire is one of the commonly ignored aspects among the casual riders.
Next multiple the radius by 2 to get the diameter. Below we prepared a tabel with rim sizes of 4 different bicycle types and their equivalents in inch etrto and french standards.