The hash marks and the S's on the outside edges are just siping. Wear indicators are usually horizontal bars that run all the way across the the tread between the grooves.
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2015 3100RL legacy...2005 Ford F-250 CC SB. Tows like a charm! 4/19 Updated to 2017 Chevy 3500 CC SB SRW -hope it tows as well as my F 250 did!
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