700 x 37c Road Bike Inner Tubes Presta Valve ETRTO 622-37 (Pair)

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Inner tubes are normally made of butyl rubber or Latex, they sit inside your tyre and are inflated with a pump, they sometimes puncture but are easily replaced. Inner tubes are simple but essential – unless you’re riding with tubeless tyres, you’ll always need an inner tube. Carrying spares is always a good idea, even if you are running tubeless, as a large slash or hole will not seal easily. Tyres suitable for use with dedicated tubeless rims, or with a conversion system which employs tape to seal the rim bed, are marked using a sidewall decal such as tubeless-compatible, tubeless-ready, tubeless-easy or similar. They have a special stretch-resistant folding bead made, usually, of carbon fibre. One way to define it, popular in times past, was to measure the tyre’s outside diameter and its maximum width when inflated, but this can be misleading. For example, some tyres marked 28" are actually much less than 27 inches in diameter, while 26×1.5 and 26×1½ are two completely different sizes.

You would expect that a tire listed as “29×2.5” would be a good replacement for a tire that said it was “29 x 2 ½”. Weirdly though these two are unlikely to be the same size of tire. This means that, if your bike pump is designed for Schrader valves, you’ll need to buy a little adaptor to use it with Presta valve tubes. Please Note: any reference to 'Royal Mail 24 ™' and 'Royal Mail 48 ™' are Official Royal Mail Service names and should not be interpreted as '24 Hour Delivery' and '48 Hour Delivery'. As well as coming in pretty colours, latex inner tubes offer lower weight and rolling resistance than butyl inner tubes. They’re relatively expensive though and heat build-up can cause issues if you’re using rim brakes on long descents. Simon Bromley/Immediate MediaSome rims are also now marked according to ISO with their bead diameter and internal section (width where the tyre fits); 622-17 for the size usually fitted to touring and hybrid bikes, for instance. But some manufacturers give the overall width instead. Subtract 6mm from overall width to estimate the rim section, or simply measure the distance between the flanges. When the 29 inch MTB tire size was introduced a few years ago, it had the same inner diameter of 622 mm, known as 28 inch in Europe. As far as possible, then, use these columns to convert to ISO dimensions and then have nothing more to do with those old markings! If you are facing and should change the tires on your bike, it is important that you choose the right bicycle tire sizes for your bike wheels. Each tire size is very variable depending on the type of bicycle tire you want, and depending on what type of bike you have. In this article you will get a small guide on how to choose the right bicycle tire size for your bike. Table of bicycle tires sizes

You must make sure you replace your inner tubes with a tube that is the right size according to the diameter and width for your tyre. The size is almost always written somewhere on the sidewall of the tyre. 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. The ETRTO size specification 37-622 indicates the width of 37 mm and the tire inner diameter of 622 mm. This dimension is clear and allows a precise classification of the rim size. Nowadays, bicycle tire sizes are all marked according to ETRTO (European Tire and Rim Technical Organization) standard. However, older English and French tire size dimensions are still used as well.Tire solutions for sport, touring and everyday life. Schwalbe is working to eradicate the puncture. Valve extenders screw onto the top of the Presta valve. Some are just hollow tubes, others include a valve at the top, which means that you need to remove the valve core from your inner tube before screwing on the extender. The ideal relationship between tyre and rim section is about 1.8 to 1, but any tyre from 1.4 to 2.2 times should fit – always provided that the bead diameters correspond. The silliest answer to this question would be to say that the difference is exactly 1 inch. Another answer would be: There is no difference.