What is the life span of a bicycle? How old is your bike? A bicycle is a "consumable," from a small part to a complete vehicle. With the passage of time, will wear, the frame and the front fork may be a little longer, of course, different material life is also very different. Some major component manufacturers will give some reference life. Brake pads: 1000km - 2500km. Tooth disk/front sprocket: 5000 km -10000 km. Chain: 2500 km -3500 km. Flywheel: 10000+ km. Tires: 5000 km -10000 km. Center axis: 18000 km. These data are only some reference data, the actual situation is much more complex, the intensity of maintenance, riding environment will affect the life of these components. Although the life of the frame is longer, there is also a reference range (for reference only) : aluminum 5-10 years steel 6-10 years carbon 5-7 years titanium 10-15 years the best way to extend the life of the bicycle frame, is to carry out proper maintenance and protection, although some brands of the chamber of commerce on the bicycle lifetime warranty, but it does not mean that you do not need to change the car for life. Cheaper bikes, which are often very durable, often have problems during riding, and when this happens, it is usually not properly assembled, not necessarily the quality of the bike. Of course, many ultra-cheap bikes use inferior internal parts, such as hub bearings. These can be problematic within a few months, while more expensive bikes typically use higher-quality parts and are more durable. Mountain bikes are more durable than road cars The same material, compared to mountain bikes are undoubtedly more durable. Mountain bikes usually use more spokes, as well as wider rims and tires, which not only cope with more complex road conditions, but also make the mountain bike more durable. Frame: The same material, the mountain bike frame tube wall is thicker, in the impact process may also be less prone to deformation. The components of mountain bikes are generally heavier than those of road bikes.