[DJ]

My '00 Access Cab with 111,xxx miles on it shows almost no wear on the rear brake shoes or drums. My brother's '97 Chevy truck went about 200,000 miles, after which the rear shoes and drums showed almost no wear.

The rear brakes do contribute to braking, but Hunter Engineering's brake tester shows that 75-90% of the braking is done by the front brakes. Less braking means less wear, but the wear is not proportional to the use, i.e. if the rear brakes provided half the force that the front brakes applied, they'd have much less than half the wear over the same duration of use. So, they last and last and last. That's normal.