My 2007 Classic Z71's rear drum brakes were squealing after only 13K mi.
Removed the rear drums to find the brake shoes "worn" on the outer edges (like someone took a grinder to them and beveled them) Drums look okay.

Dealer says "that's the way they're designed".

I'm skeptical! Anyone know anything about these shoes"

 

my 05' rear brakes squeel too, and i took it to get checked out and they said it was ok