I was working my on rotors and Caliper Piston popped out... - BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST
Rear brake pistons won't compress for brake replacement - Chrysler's TC by Maserati - Antique Automobile Club of America - Discussion Forums
![Caliper piston will not compress. Bought the right tool from autozone, cleaned and greased it but still nothing. Please help, thanks : r/MechanicAdvice Caliper piston will not compress. Bought the right tool from autozone, cleaned and greased it but still nothing. Please help, thanks : r/MechanicAdvice](https://i.redd.it/oqs8124aar381.jpg)