You need fresh tyres when they have less than 1.6mm tread on any part of the tread face.
There is always a raised section in the tread groove that is 1.5mm high, so if your tyre has worn down to that, then it is overdue.
What if the tyre looks good but one edge has worn smooth? You guessed it, you are due and you can be fined because your car is not roadworthy. This can also mean that your insurance will not be valid because if you have an accident with tyres that were not safe.
We can help you with secondhand tyres or new tyres. Below are just some of the brands we sell for new tyres or used tyres.