What size inner tubes do I need?

Asked by: Jedd Boffa

Checking the Inner Tube Size You Need The best way to check what size inner tube you need is to look on the sidewall of your tyre. Tyre manufacturers print the size on the sidewalls, so look out for numbers such as ‘700x23c’ for a road bike, or ’26×1. 75′ which is for mountain bikes.

Does inner tube have to be exact size?

No, tubes and tires don’t need to match exactly. Tubes are made from butyl rubber which can stretch. Bike inner tubes will accommodate a limited range of sizes. Larger tubes may be more susceptible to getting pinched between the tire and rim.

Is the inner tube the same size as the tire?

The tube should match the tire size diameter closely. However, tires that are close in bead diameter may use the same inner tube. For example, an inner tube for an ISO 630 tire (27-inch) will also fit an ISO 622 (700c) tire.

What size inner tube do I need for 27.5 wheel?

Inner tube size examples for road and mountain bikes

What means 700x40c?

700x40c is the measurement of your bicycle tire and is sized according to what used to be known as the ‘French system’. ‘700’ is the nominal diameter of your tire, measured in millimeters. ‘x’ just means multiplied by. ’40’ is the second number and is the nominal tire width, also measure in millimeters.

Should inner tubes be bigger than wheels?

A tube should not have excess length, and doubling on itself will cause the tire to feel uneven while riding, as well as increase the likelihood of flats. Assuming the tube is the correct size for the tire, as you said it was, there are 2 common causes for this problem.

What size inner tube do I need for a 26 wheel?

Inner tubes typically state a wheel diameter and width range for which they will work, e.g. 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.

Can I use a 26 inner tube on a 27.5 wheel?

26″ tubes work perfectly well with 27.5″ wheels.

What happens if inner tube is too small?

Using a narrower tube means that when it is fully inflated to the tire size then it is over-inflated. This leads to more stress on the rubber and it is thinner than it should be. This added stress to the inner tube means that it will not last as long as one that is the correct size for your tire.

What does C stand for in 700c?

700C tires
The “700” refers to the rough outer diameter of the tire, although the actual outer diameter will vary greatly, depending on the type of tire and tread pattern. The “C” means NOTHING; it does not stand for “centimeters.” Think about it–a 700-centimeter tire would be HUGE, over 21 feet tall!

Is there a difference between 700 and 700c?

At one point in time, “700c” was a standard tire/rim size, where “c” indicated the bead seat diameter and “700” was the diameter, in millimeters, when the tire was installed and inflated. That “700c” tire size has a 622 millimeter bead seat diameter.

Is a 28 inch tire the same as 700c?

28”/700C/29er
The tyres can differ, but the 28”, 700C and 29er are all the exact same rim diameter. The 700 markings will be followed by the width in mm, and the 28 or 29 markings will be followed by the width in inches. This is the most common wheel size, so look out for familiar markings (such as 28×1.

Can I put 28mm tires on my road bike?

Most road bike frames can accommodate a tire as wide as about 28mm. Cyclocross and touring bikes are generally designed to accommodate wider tires.

What size is 700c in inches?

29 inches

All road and cyclocross bikes are built with 700c wheels, which are 29 inches. However, 700c wheels are designed to accommodate a thinner tire. Many come in widths ranging from 18 to 23 millimeters, with touring tires ranging from 25 to 28 millimeters.