The KO3, which went on sale this past May, is the successor to the KO2, which has been on the market since 2014. The “KO” doesn’t stand for knock out, but instead means, “key benefit on and off-road”. Like the KO2, a wildly popular replacement all-terrain tire, the KO3 is built on guiding principles that BFGoodrich calls its three Ts: treadwear, toughness, and traction.