Registered Forum User
 GTL
 Bikes: ST4s ABS
     Posts: 480
 Join Date: Aug 2003
 Location: Tayside, Scotland
  
    
     Car tyres should have a minimum tread depth of 1.6mm over 75% of the tread area and visible tread over all of it. The spare doesn't count.
 The minimum tread for a bike is 1mm.