I am trying to replace my front rotors on the 1991 745 turbo I drive, and on one side the bolts (the ones with the hex holes in them) came out with effort, but the others absolutely refused to give. In fact, I broke a 10 mm hex socket (craftsman) while using a 1/2" drive breaker bar to try to get some torque onto it. The two bolts on the passenger side would not give, and so I had to reassemble the whole thing, with a new rotor on one side, new pads, and the old rotor on the other, new pads, because I had to take my daughter to college today. (Brakes work fine, but I am concerned about warping the good rotor.)

What does one do to remove those bolts if they just won't give? I am assuming I will have to go to my friendly local garage mechanic and ask him to use his air impact wrench to loosen them. Meantime, I am going to replace the front calipers with rebuilt ones because one of them is sticking (uneven pad wear, previous rotor warped).

Any suggestions, folks?
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Darius in Albany NY '86 744 GLE (175K, given to my mother-in-law); '91 745 Turbo (174K-my 'Little Red Wagon'), '00 Toyota Camry (65K - my wife's transportation appliance)