Telling how much tread is left - Drag Radials

Hey there, a buddy of mine just gave me some 275/60/15 BFG Drag Radials for my cuda. He said there was a good amount of tread life left on em, but looking at them...in my opinion, there doesnt appear to be a whole lot. So what I'm asking is how do i see how much actual tread is left? Radials have the little penny deal or the depth gauge, slicks have the dots, but drag radials?

Any info would help, they'd really only be for going, racing, coming home from the track.

I can get pics too later tonight

THanks
-Mike :thumblef: