Fingers: If the width of a human finger is 2.2 cm (7â8 in), then a million fingers lined up would cover a distance of 22 km (14 mi). If a person walks at a speed of 4 km/h (2.5 mph), it would take them approximately five and a half hours to reach the end of the fingers.
The rotors on a vehicle can last anywhere from 30,000 to 70,000 miles and sometimes more. A licensed mechanic, such as one from YourMechanic, can evaluate the rotors and advise you on their status; they may not need to be changed as often as the brake pads. Like brake pads, they should be replaced in pairs.
How many miles you get out of a set of brake pads (with disc brakes) or shoes (with drum brakes) largely depends on individual driving habits and the type of driving you do. Brakes can last from 25,000 miles to 50,000 miles, and here is why: Stop-and-go driving, as in city driving or on freeways during rush hour where the brakes are applied frequently, means a shorter service life than if you are driving the turnpike between cities in light traffic with your cruise control on.