Safety is considered as one of the most important aspects of vehicle ownership. This is the main reason why car owners are advised to check their cars’ spark plug wires regularly. This is because the failure to do so could actually affect the vehicle’s performance thereby placing the driver and the other car occupants in immediate danger when the car suddenly breaks down in the middle of the road or a busy highway.
Really, the only thing that happens to a spark plug wire is having the insulation get a break in it. That is the rubber that is on the wire