How to Safely Remove the Rear Tire of Your Mountain Bike in 5 Simple Steps
To take off the rear tire of a mountain bike, first, shift the chain to the smallest rear sprocket. Loosen the quick-release or axle nuts on both sides of the wheel. Lift the bike off the ground and pull the rear wheel out of the dropouts. Finally, remove the tire by depressing the valve stem to release air pressure and use tire levers to take the tire off the rim.