How to reasonably select the inner tube size (model, width) according to the outer tire size (model, width)?
seen in the picture1.9/2.125means the minimum and maximum size of the outer tire for which this inner tube is suitable.
To choose a tire, you first need to determine the type of tire. Only when you determine the tire according to the rider's weight, riding road surface, slope, distance, etc., can you choose the tire.
The choice of inner tube is small, and it is easy to cause inner tube rupture when filled with air. If the inner tube is large, there may be a broken tire and a flat tire, and the weight will also increase.
Therefore, the inner tube is too big and too small to be good.
It is best to choose a moderate inner tube.
For example, if my outer tire is2.0of. Then I should choose the inner tube to adapt to the size in1.9-2.1of the inner tube, because2.0In1.9and2.1the middle.
Simply put, the size of the inner tube is the intermediate value for the outer tube to adapt to the size.
However, sometimes it is impossible to find the right size, such as the outer tire2.0, while the inner tube only1.9-2.125, No.1.9-2.1The size. In this case, I just need to get as close to the middle value as possible.
The outer tire size is preferably not the minimum or maximum value of the inner tire. Although this size can also be used, with the aging of the inner tube, the degree of use is getting worse and worse, and the possibility of puncture and air leakage is greater.
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