Where to buy part worn tyres from
Not all garages sell part worn tyres, so do not automatically assume that your local garage will. There are advantages and disadvantages of buying part worns the biggest advantage being the cost. But with this in mind you do need to consider how much wear and use you will get out of the tyres before committing to part worns.
Part worn tyres can be sold with as little as 3 mm of tread on them meaning that they are already well over half worn. The legal limit in the UK for tyres is 1.6 mm but many garages often advise changing them between 2 and 3 mm to ensure optimum driving and safety.
DO a bit of research online or speak to friends about garages that they have used to buy part worns from. Do not be afraid to ask the garage for the precise tyre depth left on each part worn and if it is below 4 be very dubious about paying the full price.