the.com/tread

The grip between you and gravity, quietly negotiating every step you take for granted.

first treadsTires were smooth until grooves cut hydroplaning
legal minimumMost countries require 1.6mm or you fail inspection
penny testLincoln's head vanishing means your tires are dead
snake symbolDon't tread on me coiled a rattlesnake's warning
word originOld English meaning to step, stamp, or trample
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