Changing a dolly tire is similar to changing a regular vehicle tire: 1) Ensure the dolly is on a stable, level surface. 2) Secure the dolly to prevent any movement. 3) Use a jack to lift the dolly off the ground, ensuring the jack is placed under a strong part of the dolly's frame. 4) Remove the lug nuts or bolts with a wrench. 5) Remove the old tire. 6) Position the new tire onto the hub. 7) Hand-tighten the lug nuts or bolts. 8) Lower the dolly from the jack. 9) Tighten the lug nuts or bolts in a star pattern using a wrench.