Basic knowledge of motorcycle tires

Tires are consumables, as long as the wheels began to wear a turn, the speed of wear and a lot of factors. The service life of the same tires varies depending on the road surface, load, driving technique, maintenance and maintenance level. Therefore, when the tire travel to a certain mileage, it should be replaced. Usually, the tire groove should not be less than 2mm, otherwise, because of its poor grip resulting in sideways skid, there may be at high speed when the occurrence of puncture and other dangerous accidents. These are related to the safety of the driver, so it should be attached great importance.
If you want to roughly classified tire, it can be divided into a tire tube and tubeless tires (usually repair the master of the vacuum tire) two. The principle of a tube tire is to keep the air inside the tire, tire does not require precise contact between the wheel rim. Even if the air pressure is low, do not worry about the tire will fall off from the wheel, resulting in leakage situation. Therefore, there are tube tires are widely used in the use of wheel rims and wire off-road vehicles and American street cars. Tubeless tires, the principle is the use of steel rims (rim) of the rim and the tire edge of the special structure, the air sealed in the carcass. This tire even if the foreign body stabbed, the air will not immediately disappear, and puncture repair is also very convenient, so very popular with Friends of Morocco's favorite. In recent years, tubeless tires have gradually been used in ordinary motorcycles. Visible, two kinds of tires have their own strengths.

Typically, qualified tires are marked with specifications, maximum load, inflatable internal pressure, standard rims and trademark name and direction. Such as the standard 90 / 90-18 51S on the tire casing, where the first 90 means 90mm width; 90% after the "/" indicates the flatness ratio (%), that is 90% of the width; 18 indicates that the inner diameter of the tire is 18 inches (1 inch = 2.54 cm)
Some tires are not marked flat ratio, then the flat ratio of 100%, that is equal to the width of the height *.