
Model 3 Rotor hold bolt
In some of the first Tesla Model 3’s, the brake rotors were simply held in place by the wheel, which is held in place by the lug nuts, like this:

Sometime during production, Tesla added a rotor hold bolt – a small bolt that holds the rotor in place while the wheel is being tightened. The main problem with this change is there is now a protrusion (the bolt head) on the otherwise uniform surface of the rotor face.
Wheels designed specifically for the Tesla Model 3 now come with a machined spot in the wheel to accommodate this bolt head.
Another option when fitting aftermarket wheels is to simply remove the rotor hold bolt before mounting the wheels.