Bicycle inner tubes come in a range of sizes. The size is usually written on the side of the tube, for example: 700 x 18-23c. This tells you the diameter of the wheel (700mm) and the width of the tyre (18-23mm).
The first number is always the diameter. You can usually find this information on your bicycle’s tyres. The second number is always the width.
If you’re unsure of your bike’s tyre size, you can measure it yourself with a tape measure. Just measure from one side of the tyre to the other, not including the tread.
- To know your bicycle inner tube size, you will need to measure the diameter and width of your tire
- The diameter is the measurement from one side of the tire to the other, while the width is the measurement from top to bottom
- Once you have these measurements, you can consult a chart to determine which inner tube size is appropriate for your tires
- When purchasing an inner tube, be sure to also check that it is compatible with the type of valve on your bicycle ( Presta or Schrader)
Bike Inner Tube Sizes Chart
When you get a flat tire on your bike, the first thing you need to do is figure out what size inner tube you need to replace it. This can be a little tricky, because there are so many different sizes of inner tubes out there. But not to worry, we’ve got you covered with this handy bike inner tube size chart.
The first thing you need to do is measure the outside diameter of your tire. You can do this by using a tape measure or ruler. Once you have that measurement, consult the chart below to find the right size inner tube for your tire.
Tire Size (in inches) Inner Tube Size (standard) 24″ x 1 3/8″ 28mm 24″ x 1 3/4″ 32mm 26″ x 1 3/8″-1 5/8″ 35-40mm 26″ x 2″-2 1/4″ 45-50mm 27.5″ x 1 3/8″-2 11 / 16 ” 40-62mm 29″ x 2″-3 11 / 32 ” 50-76mm 700C x 18-23c 18-23 mm 700C x 25c 25 mm 650B (27.5″)x 2 9 / 64 “-3 13 / 64 ” 50-60 mm 29er (29″)x 2 9 / 64 “-3 13 / 64 ” 50-60 mm Examples: A common mountain bike size is 26 inch tires with a width of about 2 inches. The corresponding inner tube would be 26×2.0-2.25″. A road bike might have 700c wheels with 23c width tires; the matching inner tube would be700cx18-23c .
And finally, a fatbike typically has very wide tires; the largest width we carry tubes for is 4 inches and these fit most fat bikes perfectly! Just remember that when in doubt, always err on the larger side when it comes to picking an inner tube size; it’s much easier to put a slightly too big tube into place than one that’s too small and won’t fit at all!
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What is the Best Way to Know My Bicycle Inner Tube Size
There are a few ways to know your bicycle inner tube size. The first is to look at the sidewall of your tire. There will be a number that looks like this: 27×1 1/4.
The first number is the diameter of your wheel and the second number is the width of your tire. The other way to know your inner tube size is to measure it yourself with a ruler or tape measure. To do this, simply remove your wheel from your bike and measure from one side of the tire to the other.
Again, the first number is the diameter and the second number is the width.
If you’re still unsure about which size inner tube you need, you can always bring your old one into a bike shop and they’ll help you out.
How Do I Measure My Inner Tube Size
To measure your inner tube size, you will need a measuring tape and a marker. Place the measuring tape around the widest part of the inner tube and mark where the two ends meet with the marker. Then, measure the distance between the two marks with the measuring tape to get your inner tube size.
Is There a Difference between Mountain Bike And Road Bike Inner Tubes
Mountain bike and road bike inner tubes are not the same. Road bikes have narrower tires than mountain bikes, so their inner tubes are also narrower. Additionally, road bike tires are generally inflated to higher pressures than mountain bike tires, so road bike inner tubes are designed to be more resistant to punctures.
What Happens If I Get the Wrong Size Inner Tube for My Bike
If you get the wrong size inner tube for your bike, it can cause a number of problems. The most common problem is that the tire will not seat properly on the rim, and could come off while you are riding. This could lead to a dangerous situation where you could lose control of your bike and crash.
Additionally, if the inner tube is too small, it could burst when inflated and cause an accident. If the inner tube is too big, it could rub against the side of the tire and cause a flat. In either case, it is important to make sure that you have the correct size inner tube for your bike before heading out on a ride.
How To Choose Inner Tubes – GCN's Guide To Road Bike Inner Tubes
Conclusion
Bicycle inner tubes have a size designation. The most common sizes are 26″ (for mountain bikes), 700c (for road bikes) and 29″ (for mountain bikes). To know what size you need, simply look at the sidewall of your tire.
It will list the diameter and width of the tire, as well as the recommended width range for an inner tube. Just match up those numbers with the corresponding tube size. For example, a 26×2.1″ tire would use a 26″ tube while a 700x25c tire would use a 700c tube.
You can also find tubes that are designated by Schrader or Presta valves. These refer to the type of valve used on the tube.