Inner tube

The inner tube is a fundamental component of most bicycles, acting as an inflatable inner layer inside the tire. Its main function is to keep the air under pressure, providing a layer of comfort and protection against the roughness of the terrain.

Usually made of butyl rubber, an elastic and resistant material, the inner tube adapts to different tire sizes, from road bikes to mountain bikes. It is inflated by means of a valve, which can be either Presta (thin and long, often found on road bikes for its ability to withstand high pressures) or Schrader (wider, similar to car tire valves, common on mountain bikes and city bikes).

One of the main advantages of the inner tube is its ability to absorb shocks, offering a smoother, more comfortable ride. It plays an important role in the bike's grip, especially on uneven terrain, contributing to the rider's safety and stability.

However, the inner tube is not immune to punctures. Sharp objects such as nails, shards of glass or thorns can puncture it, resulting in air loss and a flat tire. Fortunately, repairing or replacing an inner tube is a basic skill that any cyclist can learn. A repair kit or spare tube, a tire iron and a pump are all you need to get your bike back on the road.

Inner tubes also vary in thickness. Thicker models offer better protection against punctures but are heavier, while thinner tubes are light but more prone to punctures. Some cyclists choose self-healing tubes, which contain a special liquid that seals small punctures almost instantly.

In short, the inner tube is a humble but essential component of your bike, directly impacting the comfort, performance and even safety of your ride. Although it requires some attention in terms of maintenance and puncture preparation, its role in providing an enjoyable cycling experience is undeniable.