08-19-2014, 03:05 PM
My tires, the continuing source of much discussion, do have circumferential grooves 360 degrees around the circumference. Tread depth is measured from the base of this groove to the top of the "tread". It is my position that that since I still have grooves I still have tread. Dan, you are the final arbiter.
"V"
"V"
'87 911 Coupe