I had a Toyota dealer's service writer tell me that the shoes (drum brakes) on my wife's Camry only had 5% of the lining left.
That seemed like a pretty specific measurement, so I believed him.
I bought a new set of shoes & pulled the drums. The first one didn't look even half worn.
Maybe they only looked at the other one.
So I checked the dirt buildup around the plugs and wheel studs. They never even pulled the drums to look.
I put the shoes on anyway as the job was half done just to take a look. The old shoes had LOTS more than 5% left. More like 75%.
The guy flat out lied to me so he could get more money out of my pocket. What's new?