What age of tyres can fail the NCT?

Hi Gearoidin,

The NCT checks for condition and tread depth mostly and will fail on those items and if the tyre is not the right specification for the car. There is a note in the NCT manual, however, for the tester to advise the owner if the tyres are more than six years old. Most tyre makers recommend that, even with very light use, you should not use a tyre that's more than ten years old as the internal structure starts to break down.