February 1, 2016 Todd Holzwarth Atturo TrailBlade XT 33x12.50-20 installed February 1, 2016 Todd Holzwarth The perfect addition! 33x12.50-20 of extreme terrain goodness. My goal with my GC build was to give the vehicle an OEM+ feel. By no means do I want to be a Wrangler. The GC is a luxury, off-road capable vehicle.