Is there an age where tyres need to be changed or is it okay to use them to the tread mark before changing?

Tyres can be deceiving. Although there may not be any hairline cracks, bulges or missing bits of rubber, the tyre can still deteriorate. This is due to UV light, weather conditions and the quality of the tyres. A tyre can look new or in good condition but not be fresh and pliable. Generally speaking, a vehicle’s tyres should be replaced after five years, regardless of the amount of wear showing on them.