The new tire with an asymmetrical tread design and Kevlar sidewalls promises to be a contender in the hot MT tire market. Goodyear says using Kevlar increases sidewall toughness and puncture resistance 35%. It also helps reinforce the sidewall for on-pavement driving. The asymmetrical (not symmetrical) tread design looks directional, but Goodyear says the tires are NOT directional, can run either way and have been tested that way.