Drum brakes and disc brakes each have their strengths, and the right choice depends on your truck type, operating conditions and maintenance setup.

Brake drums: proven and cost-effective

• Cost: drums and drum brake components are generally more affordable to produce and replace.
• Durability: sealed design keeps out dirt and debris — a real advantage on unpaved or construction sites.
• Service life: large friction surface area distributes heat and wear evenly, giving long intervals between replacements.
• Maintenance: technicians worldwide are familiar with drum brake service.

Brake discs: consistent performance

• Heat dissipation: open design cools faster, reducing fade during repeated heavy braking (e.g., mountain descents).
• Consistency: disc brakes provide stable pedal feel in wet conditions.
• Weight: disc systems can be lighter than equivalent drum assemblies.

What most fleets choose

For heavy-duty and semi-trailer applications, drum brakes remain the standard worldwide — especially in markets where cost and serviceability come first. Disc brakes are increasingly fitted on European-style trailers and vehicles running demanding routes.

Need replacement parts?

UIB Truck Parts supplies both brake drums (3721AX, 3600AX, 05255-E/WA-69170 and more) and brake discs, with OEM-compatible quality at factory-direct prices. Tell us your truck model and OEM number for a quick quote.