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Questions and answers about sports

How do you buy tire tubes?

3 min read

Asked by: Logan Harden

Your inner tube needs to fit the wheel’s diameter and also the width of the tyre fitted, so there are two significant measurements to get right. Let’s start with diameter – make sure you’ve got the right size inner tube for your wheel’s diameter or you’ll find it difficult to fit.

How do I know what tire tube to get?

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.

Is the 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.

How much does a tire tube cost?

Inner tubes typically cost $8. Specialty tubes (extra long valves, odd sizes, thorn proof, etc.)

What size inner tube do I need for 27.5 wheel?

Inner tube size examples for road and mountain bikes

Mountain Bike Inner Tube Sizes
Wheel Size Tyre Width (inches) Inner Tube Size (inches)
27.5” or 650b 2.3” 650b x 1.75 – 2.4 or 27.5 x 1.75 – 2.4
27.5”+ or 650b+ 2.8” 650b x 2.3 – 3.0
29” 2.4” 29 x 1.75 – 2.5

How do I know my inner tube size?


If you check along the sidewall of your tire it'll tell you your size. So for example this my road bike tire is 700 by 32 that first number is the diameter of the tire.

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.

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.

Can you use a different size inner tube?

Can I use a smaller or bigger inner tube than the tire? An inner tube that is 10 millimeters or half an inch wider or narrower can be used as long as it matches the rim diameter. A 700×25 inner tube works in a 700X32 tire, but in a 700X45 could experience issues.

Can you put 25 tubes in a 28 tire?

Re: 20-25 tubes in 28mm tires??



It’s basically a no-no because as you pump up tyre the inner tube will stretch to fill the void of the wider tyre making it more likely to fail (or so the explanation went).

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.

Can a 26 inch inner tube fit a 27.5 wheel?

26″ tubes work perfectly well with 27.5″ wheels.