Bicycle Tube Conversion Chart

This is to allow the tube to expand to the correct size for your tires and can range from as narrow as an inch right up to a tire width of 2 5 or greater.

Bicycle tube conversion chart. Over time different countries and different manufacturers have built up a system that is so complex that probably only 2 or 3 people in the world actually understand it. Mountain bike tubes range in size from 26 through to a 27 5 and 29. When it comes to replacing your inner tube how do you know which size you need for your bike. The even simpler answer is to stick with the 700x38c sizing and buy a tube that s labeled with that size.

You can convert inch based and metric tire designations to a metric format developed by the standardization groups iso and etrto. The sad fact is that inner tube sizing and tire sizing for that matter is a dark art. November 2016 at 2 12 i need a two 2 bike tires with 28 16 size do you have a supplier. The simple answer is.

Checkout dimensional conversions tables sizes are expressed differently according to the various standards or uses. The bike is usually only riden on payment. Mountain bike tyre sizes are usually stated in inches. Mtb and city tire sizes are given in inches.

Can you suggest replacement or substitute new tires. To confuse matters. Jerome from hrep says. Or if you find a tube that s 26 x 1 2 1 7 that will work too.

We ll take a look at why thi. If you find a tube that s 26 x 1 1 1 5 for instance that will fit your tires. So a 29 inch mtb tube will have the same diameter as a 700c road wheel while a 27 5 inch tube will be the same diameter as a 650b road wheel. Mtb tubes must be the correct width as well also measured in inches.

Let s say your wheels have a 26 inch diameter and a 1 3 inch width. To convert tire tube sizes from one notation to another it is necessary to use the chart published by the iso available at any reputable bike shop. There are a myriad of wheel sizes for road mtb touring and children s bikes. The read is 16 x 1 3 8 inches.

700x38c converts to around 27 5 x 1 5. Mtb wheels in particular can be further categorised by 26 inches 27 5 inches and 29 inches. The chart that explains things the european tyre and rim technical organisation in conjunction with the international organization of standardization developed a unified system of notation. Bicycle inner tube size conversion chart plus recommendations june 1 2020 by ben.

Though most bicycle tires are measured and labeled in inches road tires like the 700c and 650c are measured and labeled in mm.