Use the lug wrench that came with your Range Rover to loosen the lugs. Place it onto the lug bolt with the handle pointing away from you. This will give you greater torque when you pull it.
Pull the handle toward you, turning the lug bolt counterclockwise. This will require great force. Loosen the lug bolt only slightly. Repeat with the other lug bolts.
Jack the vehicle up until the tire is at least two or three inches off of the ground. Use a locking jack or jack stand for added safety.
Replace the lug wrench onto the lug bolts and continue to turn counterclockwise until you can loosen them by hand. Remove the lugs by hand the rest of the way, and take off the tire to change or perform other maintenance.