How to Change a Back Tire on a Mountain Bike: A Step-by-Step Guide
To change the back tire on a mountain bike, first, shift the chain onto the smallest cog. Release the back brake. Open the quick-release lever and remove the wheel from the frame. Use tire levers to pry the tire bead over the rim, and remove the punctured inner tube. Insert a new tube, tucking it into the tire. Inflate the tube slightly, and fit the tire onto the rim. Apply pressure to the center of the tire, and work it onto the rim. Use a pump to inflate the tire and ensure it is seated correctly. Finally, reattach the wheel to the frame and close the quick-release lever, making sure the wheel is seated correctly and aligned with the frame.