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Inner tubes – if two tubes match the tire, is bigger or smaller better for durability?

5 min read

Asked by: Sanjoy Buchanan

Does the inner tube size have to match 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 happens if you use a smaller inner tube?

If the tube diameter is too small, then it may not fit on your wheel rim. If the tube width is too small then you may have to over-inflate the tube to fill the bike tire and this will weaken the tube rubber, with the possibility of punctures.

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.

How do I choose an inner tube size?

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.

What happens if your inner tube is too big?

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 I use a bigger tube in a smaller tire?

Yes, it’s perfectly safe to use the next larger size tube in a smaller tire. It’s a common trick used by bike messengers to reduce the chance of flats. The only downside is a slightly heavier wheel since you’re using more tube that you really need.

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).

Will a 26 inch tube fit a 27 inch tire?

In real world applications, a 26″ tube will work perfectly fine in a 27.5″ 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.

Will a 1.75 tube fit a 1.5 tire?

The diameter 1.5″, 1.75″,1.95″ etcetera have tubes which will fall into the range, ie, tire = 26″ x 1.75″ so you can use a tube in the range of 1.5″ – 1.75″.

How many inches is 700 C?

27.5 inches

The most straightforward answer to “700c to Inches” is that 700c equals 27.5 inches.

Is 26 inch tube the same as 700c?

What Is The Difference Between a 26 Inch and a 700c Wheel? This brings us around back to the same answer; they are the same diameter, but a 26-inch tire will fit onto a 700c rim but not the other way around because of the difference in rim thickness.

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

Will it fit with my 27.5 tire and rim? In real world applications, a 26″ tube will work perfectly fine in a 27.5″ tire.

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).

Can you use 700×32 tube in 700×35 tire?

Yes. Tubes stretch a good bit.

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

What does the blue line on an inner tube mean?

Butyl inner tube is the world’s development trend. The methods to recognize the butyl inner tube: the tire body has color line with width no less than 2mm. 1. Butyl inner tube, there should be blue line on its circumference.

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.