Roadster brakes are undersized, and regenerative braking means brakes do not get enough of a workout.
Go out to a deserted paved road and do several HARD STOPS - Emergency-level stops, hard enough to trigger
the ABS. Do this until the rotor surfaces gleam like mirrors, and then do it periodically to maintain them.
The result will be night-and-day in terms of braking performance.
It might just save you from a collision.