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.
While brake pads can last anywhere from 15,000 to 35,000 miles or more, rotors are generally expected to last through three or four brake pads changes.Because driving conditions, driving styles and other factors influence rotor life, it is difficult to come up with an average life expectancy for them.hile brake pads can last anywhere from 15,000 to 35,000 miles or more, rotors are generally expected to last through three or four brake pads changes.