Jack-all. Straight tire irons. Liquid dish soap.
Jack-all to break the bead. Place tire under bumper of heavy truck. Use foot of jack placed on tire near rim edge. Jack gently. Weight of truck will pop bead off rim. Repeat for other side.
Lube up tire bead with liquid soap. Kneel on tire sidewall to force bead to centre of rim and use tire irons to lever tire off rim. EZPEEZY.