Bias tire is intercrossed by multilayer treads. Due to different materials, it can be divided into cotton tire, rayon tire, nylon tire, polyester tire and steel wire.
Here are their features:
1. Cotton tire. Cotton tread is made by cotton textile. Cotton is the earliest material used in tire making. Due to its low intensity, multiple layers, high heating, slow heat transfer, few re-treading time and much water absorption, it has no longer been used. Even so, other materials still take cotton as standard, which has become a practice in tire industry till now.
2. Rayon tire. After cotton, rayon has been widely used, which firstly appeared on Paris Exhibition in 1889. Invented by a famous French physiologist, it has the same luster and feeling like silk but is more highly tensile than cotton. By its features like heat and fatigue resistance, it became main material of tire making. Compared with the cotton tire, rayon tire is better in comprehensive performance, which made tire industry stride forward again. Its disadvantage is hygroscopic so as that its strength will be reduced in wet condition.
3. Nylon tire. Nylon was invented by an American chemist and published by his Dupont Corp. in 1938. Since publication, it has caused widely attention in the world. Some guys called it “Tougher than steel, thinner than spider silk, made by coal, air and water, but elastic and shining like protein fibre”.
As tire tread, nylon is more tensile, impact resistant, elastic, lower density, renewed and difficultly hydrophilic, but its disadvantages are thermal expanded and easily deformed. In winter, if vehicles parked outside for a long time, there will appear “flat spot”, which is caused by this, too.
4. Polyester tire. It has the same strength with nylon, but tensile ability is better than it. So it’s widely used as the backbone of tire among foreigners.
5. Steel tire. It’s invented by France Michelin Tire Corp. in 1946. It features large strength, low rolling resistance, impact and wear resistance, safety and high turned over rate. Its shortcoming is too tough to buffer comfortably.
You’d better to know more tires when selecting one correctly. For example, if you ride on a wet road, you should not choose nylon tire. If you need more turn-over rate, you can use nylon tire. Totally, you’d better choose one suitable tire in accordance with various conditions.