What are the advantages of disc brakes over drum brakes?

Maintenance:

• Fewer moving parts. Compare the caliper with one moving part, to a drum brake, with between 9 and 12 moving parts.
  Longer life due to fewer moving parts and more effective heat dissipation.
• Friction pads are easily accessible for replacement or inspection.
• Easy access to caliper for cleaning and maintenance.
• Entire caliper can be removed for maintenance without removing rotor and hub. (Kodiak’s caliper components can be replaced at any automotive parts store stocking GM replacement parts.)
• Entire rotor can be removed for maintenance* without removing hub.

Performance:

• Calipers are self-adjusting to eliminate unequal braking from one side to the other, resulting in smoother braking. Brake adjustment headaches are eliminated.
• Braking performance is less likely to be affected by dirt, water, or rust contamination.
• Much less sensitive to premature lock-up or wheel skid than corresponding uni-servo or duo-servo hydraulically operated drum brakes, or electrically operated drum brakes.
• Fade resistant.

Value:

• Disc brakes represent a better value to the consumer in that they have a lower owning cost over the expected life of the trailer.