Removable aerodynamic wheel cover

A method of installing a removable wheel cover assembly into a wheel, the method comprising:

• providing a removable wheel cover including a disc and a shaft assembly, the shaft assembly being attached to the disc, the shaft assembly including an outer shaft, a contact ring spring, a push button mechanism, and a contact ring, the outer shaft included a walled structure, the push button mechanism further including a body including a top surface, the walled structure of the outer shaft surrounding at least a portion of the body of the push button mechanism, the contact ring spring biasing the contact ring in a direction axially away from the top surface of the push button mechanism, the contact ring spring further biasing the push button mechanism in a direction axially opposite of the contact ring,
• providing a disc wheel including a tire and a wheel hub;
• placing the removable wheel cover into an opening in the wheel hub such that the removable wheel cover locks with the wheel.