The legal minimum for tread depth is currently 1.6mm of tread across the central three-quarters of the tyre.Â However Windsor Fleet’s safety policy is to change worn tyres when they reach 2mm. It is the responsibility of the driver to ensure that all tyres, including the spare tyre, are within the legal limit, are in good condition and inflated to the correct pressure. Should your vehicle not have a spare tyre, please ensure you have a working repair kit on board at all times. Our preferred tyre suppliers are First Stop Tyres and Advance Pitstop. Please click here for a list of First Stop/Advance Pitstop centres. Alternatively, call our driver services team on 01-419-8373 and they will be able to advise you of your nearest tyre centre.