How do I know if I have 9 or 10 inch brakes?
How do I know if I have 9 or 10 inch brakes? Pull the drum off and measure the ID with a tape measure. If the drums are smooth, they 9" brakes, if the drums are finned/ribbed, they are 10" brakes. How big are the rear brake drums on a Ford Ranger? The above means that, during those years, the 9" drums should have been factory equipment only on XL/XLT regular cab 4x2's with the standard Payload Package 1. Science! Re: rear brake size, 9" or 10", how to tell? Thank you for all the information everyone! I had assumed...