Tire installation after grinding a rim
Releasing agents used during tire production can have a very negative effect on the performance of rim brakes. With Schwalbe tires for example any contact with the grinded rim or brake pads must be avoided.
A contaminated grinded rim can only be restored by grinding it again.
The actually grinded rim can be covered with masking tape prior to tire installation:
Tape should be removed after installing the wheels in the frame/fork and inflating the tire: