What is the maximum I.D. for my rear brake drums they are 11 inch drums. The car is a 57 olds super 88.


Thanks

 

I didn't find anything in the 1957, 58 fsm's. I don't have 59 but 1960 and 61 describe turning the drum to 11.060" and using oversize shoes. Later iirc the standard became +.060" max oversize plus .030" more allowable for wear.