Do I need to remove my old lug nuts before installing these?

Yes. Remove your current lug nuts one wheel at a time using your lug wrench or impact gun. Hand-thread these nuts on finger-tight first, then torque to spec. Always refer to your vehicle's service manual for the correct torque value — do not assume.

How do the locking nuts work?

The four locking nuts have a unique seat that requires a specialized key to remove. Keep that key safe — lose it and you'll need a drill or machine shop to remove them. Install one locking nut per wheel for theft deterrent.

Will these fit my wheels?

These are M12 x 1.5 thread. If your current lug nuts are M12 x 1.5, these will thread on directly. If you're unsure, pull one old nut and compare — thread pitch and diameter must match exactly.