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Look at post #5....at the very bottom (center) of your pic in that post you can see the bars....little transverse bars between the longitudinal tread grooves.
In that pic it kinda looks like the tires are at the wear bar...but a close-up shot would be more telling
Man guys... just buy his tires These are great rubber... we ran the the R-S2 for 24 hours at ChumpCar. Several experienced racers had good things to say about overall grip and consistent feel, and they wore extremely well. $100 is a steal for these.