Do you have a Bentley manual? They don't really say what to use to re-install, just says.......
"When pressing drive axle into front axle differential or bearing pedestal, be sure to press axle beyond resistance of spring clip. Spring clip must snap audibly into place."
About removal they just say......
"use BMW special tool 31 1 170 or equivalent pry bar, pry inboard cv joint out of front diff or bearing pedestal."