The lifespan of a timing belt is between 7 to 10 years or between 60,000 to 105,000 miles.
After 10 years the timing belt should be replaced regardless of miles because the rubber of the timing belt degrades with age.
When the timing belt breaks then your engine will fail to run and you'll be stranded on the road.
The lifespan of a timing belt is between 60,000 and 105,000 miles and should be replaced after 7 to 10 years regardless of mileage.
A timing belt is a preventative maintenance item that should be replaced well before it breaks because it can prevent your engine from running correct or at all and could possibly damage your engine.