Generally, the use of Motorcycle tyres should not exceed 3 years, and the mileage should not exceed 60000 km. Tyres over this age will gradually reduce their performance parameters. So it would be better to replace it as soon as possible if conditions permit. You can refer to the four digits on the sidewall of the tire indicating the date of manufacture of the tire. The first two digits represent the number of weeks, and the last two digits represent the year.
Before each ride, please check the tires first. If you find cracks or bulges, replace the tires immediately. Also pay attention to the tire pressure. Insufficient tire pressure of the motorcycle will lead to excessive deformation of the tire. This will not only cause damage to the tire, but also make the handling more sluggish, and reduce the limit of the curve, which is very likely to cause a crash.