Tire Wear sign and tyre installation，rotation and maintenance

Tire Wear sign & tyre installation，rotation and maintenance

Tire Wear sign

When the tyre pattern is almost exhausted, that is, when the tyre pattern is worn below the remaining 1.6mm of the groove, the amount of tyre slippage will increase significantly, and the braking distance will increase sharply. This not only makes the operation stability of the vehicle worse, but also This often causes traffic accidents. Therefore, my country's national standards stipulate that the radial tyre pattern wear limit for trucks and passenger cars is 1.6MM. The tyre manufacturer sets wear marks on the tyres according to the standard. When the tyre pattern wears to the above limit, the driver should replace the tyres in time.
When the wear reaches the wear mark, it means that the controllability and safety of the tyre can no longer be guaranteed and must be replaced in time.
tyre crown wear sign
There are 4 or more marks at the bottom of the tread groove, with a 2.0mm mark block raised locally.
There is a "TWI" pattern on the tyre shoulder to indicate the design position of the wear mark.

tyre installation
1. The tyres must be installed by professionals and use special tools; radial tyres and tubeless tyres must be installed with special machinery (installation and disassembly machines) to avoid damage to the tyres.
2. tyre components must be standard and matched. Deformed and non-standard rims can easily cause abnormal tyre wear and bead bursts.
3. Pay attention to the correct driving direction when installing tyres with directional patterns.
4. When installing, there should be no debris, sand or water between the inner and outer tyres, only some talcum powder can be rubbed on the surface of the inner tyre, and talcum powder cannot be sprinkled directly into the tyre.
5. Radial tyres and bias tyres cannot be mixed together on the coaxial line. It is best to use tyres of the same brand, the same specification and the same level; tyres with a slightly larger outer diameter are installed on the outside.

tyre rotation and maintenance
1. It is necessary to change the tyres on the vehicle in a timely and appropriate manner to maintain uniform tyre damage. About 20% of the mileage loss can be avoided by transposition or reversing; tyres with a slightly larger outer diameter should be installed on the outer wheel; radial truck tyres Generally, one shift is performed when driving 12,000~15,000 kilometers, and the bias truck tyre is generally shifted once when driving 8,000-10,000 kilometers.
2. When the tyre is rotated, the tyre, inner tube, and flap should be fully inspected, and if the tyre is found to be injured, it should be repaired in time.
3. The tyre rotation method has two types: the cross rotation method and the cyclic rotation method. The cross rotation method is suitable for cars that often drive on large arched roads, while the cyclic rotation method is suitable for cars that are often flatter. Cars driving on the road. Once selected, it should always be transposed according to the selected method. The direction of rotation of radial tyres is always the same. If it rotates in the opposite direction, vibration will occur due to the reverse deformation of the steel cord, which will result in deterioration of car ride comfort.
4. tyres are combined with the primary and secondary maintenance of the vehicle and also carry out primary and secondary maintenance.