A tyre's final mileage may depend on various factors:
Some of these are within the control of the motorcyclist: tyre pressure, load, vehicle speed, riding style (braking and accelerating).
• Road use: road curviness, surface type
• Off-road use: Kind of terrain (sand, gravel, mud…), ambient temperature
A single factor on its own may only have a small impact on a tyre's mileage; however, if many factors come together there will be much more wear and tear.
The tyre treads are what make up most of the tyre's grip on the road. As they become worn down, they lose their ability to drain away water. It is therefore important to ride more slowly on wet surfaces.
Consider checking your tyres regularly for wear.