What is a Wheel Stud?
The studs on your wheel hubs, along with the lug nuts, keep your wheels firmly attached to the wheel hubs and axles on all four corners of your vehicle. Wheel studs are nothing more than large bolts that are designed to fit securely into your wheel hubs. Although normal bolts often use hex heads, it’s not uncommon to find wheel studs with rectangular or even oddly shaped heads.
Automotive enthusiasts often replace their stock wheel studs with extended wheel studs when fitting aftermarket wheels to their cars and trucks.