Changing a semi truck tire involves several important steps to ensure safety and proper installation. First, ensure the truck is parked on a level surface, and engage the parking brake. Use wheel chocks to secure the opposite wheel. Loosen the lug nuts slightly before jacking up the truck using a heavy-duty jack placed under a solid axle point. Once the tire is off the ground, remove the lug nuts completely and take off the damaged tire. Place the new tire on the hub, hand-tighten the lug nuts, lower the truck, and then fully tighten the lug nuts in a crisscross pattern to ensure even pressure. Finally, check the tire pressure and make any necessary adjustments before resuming your journey. It's crucial to follow safety protocols throughout the process to avoid accidents and ensure the tire is securely installed.