Need some helping knowing which motorcycle tube to get for your bike? Sometimes it's a little harder than you'd think. Not all tire manufacturers size their tires and tubes the same. Some use metric measurements and others use standard. Here is a conversion chart to help you understand which tubes will fit your tires. Remember, the first two numbers determines the width and profile of the tire, the last set of numbers is the diameter of your rim. Please contact us if you need further assistance.