MBTKO and DuraTracs 33×12.5×15 Installed! April 30, 2015March 23, 2015 by StarBrite In early December Celticon needed some new shoes. That stock look just was NOT cutting it! War Pig was kind enough to hand down his MBTKO15/DuraTrac 33s to his new friend. But it was Christmas where he REALLY grew up!