The replacement of the brake pads is without mileage and age. Normal driving case, the front brake life of 2-4 million km, the life of the rear brake pads for the 6-10 million km. But it is possible in this car can use 50,000 km in another car on the 30,000 km must be replaced, which also depends on the type of vehicle, car weight, driving habits and other specific circumstances. If you are driving the traffic conditions often have traffic jam situation, then you are bound to frequent braking, so that the degree of wear the brake pads will be larger, if often in this road driving, your vehicle brake pads may be replaced by high frequency. As well as long-term road in the city on the road car brake life than the long road in the highway; driving on the mountain than in the flat road driving short, truck brake pads and short life than the car. In fact, and can not absolutely count the life of the brake pads, only often check to see if it is the number of wear and tear in mind.