RAM 3500 Truck 2WD L6-359 5.9L DSL Turbo VIN D FI (1998)
Brake Pad: Specifications
As a general rule, riveted brake shoes should be replaced when worn to within 0.78 mm (1/32 inch) of the rivet heads.
Bonded lining should be replaced when worn to a thickness of 1.6 mm (1/16 inch).