The importance of tires in a car is often easily overlooked. Tire characteristics are closely related to the performance and efficiency of the vehicle. Here you will be introduced to the structure of the tires and the characteristics of the tires.
First of all, we first understand that the tires can only find the right tires if we understand the structure of the tires.
The structure of the tire is like this. The open-type tire of a bicycle is a main body of a tire composed of a mesh cover, which is attached with a layer of tire skin to wear when rolling, and two tire lips are embedded for fixing the tire to the wheel frame, so that The main structure of the tire is formed. Since bicycle tires are relatively thin and easily puncture or cut, most of them will add an explosion-proof layer between the tire skin and the mesh cover to increase the strength of the tire.
Generally speaking, when describing the characteristics of a tire, it is roughly divided into several directions: rolling resistance, grip, road feeling, wear resistance, explosion protection, weight, and price. In addition, there are two other features that are often overlooked but important: power transmission and manufacturing quality. If you want to use "noun explanation" to explain these words, you may have fallen asleep before you finish reading, so I still use the "feeling" way to describe these characteristics, which is easier to read.
When the wheel starts to roll, you will want it to roll down and not slow down. Of course, this is impossible because it will face wind resistance and other resistance. In terms of the resistance of the bicycle itself, a small part of the reason is the resistance of the hub, and the other major part is the "rolling resistance" of the tire. The smaller the rolling resistance, the easier it is to maintain speed. In other words, you will speed up with the same effort. Needless to say, the smaller the rolling resistance, the better.
TPI weave density
Since the mesh cover is the main body of the tire, and the main source of rolling resistance is the energy loss caused by the compression deformation of the mesh cover when contacting the road surface, the goodness of the mesh cover is the key to the performance of the tire. The most commonly used indicator is the TPI, which is the density of the mesh. The higher the TPI, the greater the number of fibers in a mile. High-density woven meshes, which represent finer fibers, require less rubber to fill the gap; relatively low-density woven meshes have thicker fibers and require more rubber.
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