Cam belts or timing belts require routine replacement either on time or on distance driven. These intervals are specified by the manufacturer and should be adhered to in order to avoid costly engine damage in the event of failure.

What many people do not realise is that the age of a cam belt or timing belt is as critical as the distance covered. Rubber deteriorates with age and becomes perished. Also imagine a vehicle stuck in slow moving traffic for hours on end every day covering very few kilometers. The wear and tear in stop / start traffic is considerably higher than a vehicle travelling at a steady 100 Km/h for the same period of time.