MS car wheel lock A wheel lock helps prevent theft of your car or its wheels. Locking wheel nuts/bolts replace one lug nut on each wheel and require a special key to remove. A wheel clamp is an external device that locks around the wheel and prevents the vehicle from being driven away. For choosing one, consider: Compatibility with your car's wheel size and bolt pattern. Hardened steel construction for better security. Weather-resistant coating for outdoor use. A spare key for locking wheel nuts. If you're looking to buy one, tell me your car make and model (for example, Maruti Swift, Hyundai Creta, Honda City), and I can recommend suitable wheel locks.