just a quick question. what is the original thickness of the rear brakes for a 98 GLE, what the minimum thickness turnable? anything helps

 

I think the minimum thickness allowable for the rotors should be physically casted into the rotor. Sorry I can't tell you the thickness of the stock rotors. If you contact a brake repair shop they have books with all the info you need to know. I'm sure they would be glad to help you if they think you might bring them some possible buisness.