Large well spaced lugs with an aggressive center line make the Colossus a no brainer for snow or sand Large well spaced lugs with an aggressive center line make the Colossus a no brainer for snow or sand DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners EXO - sidewall protection which helps prevent puncture from sidewall abrasions TR - Tubeless compatible casing, sealant required