Question

Jack is checking his ambulance tires. He decides to check for tread depth using the Penny Technique. Jack puts the penny in one tread groove. He observes that there is no space visible between Lincoln’s head and the edge of the coin. What other method could be used to check tire tread depth?

Answer 1

You can stick your finger between the tread blocks. There’s a little platform between the blocks but are below the tread surface. If you can feel some “meat’ on the tread all is not lost yet