I have noticed this year (2013) that there is a big difference from track to track INEX inspectors regarding the tread depth rule - inspectors have almost turned their back to this rule. Why? The rule seems very clear to me.
Tread Depth - When the top of the wear-bar indicator appears at two spots in a row on the tire (side-by-side or in the same groove - i.e. outside groove) or the tread depth is 2/32” or less on any two (2) points in the tread (measured from the bottom of the groove, not at the top of the wear-bar) (“tread” will be defined as 6” across the tire, to be measured from the center 3” both ways), that tire will be confiscated, destroyed or drilled by the technical inspector.
I have been around Legends racing since 2007 and I have never seen a tire confiscated, destroyed or drilled by the technical inspector. I realize this is a tough decision for an INEX inspector, but they are asked to enforce to the rules.
I am sincerely interested in feedback regarding why this rule is so difficult to enforce .... or....how it can be more clear.