Tri-Axle Trailers

Australian Made Tri-Axle Trailers for Sale

A tri-axle trailer is defined by its three evenly spaced axles, which distribute substantial payload weight across a wider chassis footprint. So, simply put, a tri axle trailer’s three axles help spread the weight of heavy loads across the trailer for greater stability and load distribution.

By distributing heavy loads across three axles, tri-axle trailers reduce the load placed on individual tyres. Ultimately, helping minimise tyre wear, improve braking performance, and provide greater stability when operating at maximum road legal limits.

Constructed in Ballarat using high-grade Australian steel, Beavertail tri-axle trailers are built for heavy-duty applications across:

• Civil Construction
• Mining
• Agriculture
• Heavy Haulage

At Beavertail, we are proud that all of our trailers are Australian-designed and ADR compliant, with PBS configurations available to help optimise productivity and safely transport demanding loads across Australia.

What’s the Difference Between Beavertail vs Dovetail vs Ducktail Trailer?

Short answer, there is no difference. Beavertail, dovetail and ducktail are terms used to describe the same basic trailer design.

The names refer to the sloped section of the trailer that creates a lower loading angle. Making it easier to load heavy machinery and equipment, so tracked and wheeled machinery drives on at a low approach angle without bottoming out. It also gives the trailer its recognisable profile and characteristic beavertail shape.

Tandem Axle vs Tri-Axle Trailers

When comparing a tandem axle trailer with a tri axle trailer, the key difference is the number of axles that support the load.

• A tandem axle trailer = two axles
• A tri axle trailer = three axles

See three key advantages of upgrading to a tri axle for heavy transport operations:

Increased Payload & Mass Limits

A tri-axle trailer is designed to handle greater payloads by distributing the overall trailer mass across three axles. Depending on the configuration, tri-axle trailers can support payloads from 16.8t up to 30.5t+.

Better Weight Distribution

Three axles help spread the load across the trailer, reducing the weight and pressure placed on each individual axle. This can help minimise strain on suspension components and tyres while supporting more balanced performance under heavy loads.

Enhanced Ride & Braking Stability

Additional axle contact provides better braking response and ride stability over rough or uneven road conditions.

If a triple axle group isn’t the right fit for your operation, explore our Tandem Axle Trailers and Quad Axle Trailers, to compare options. Or, reach out to our expert team and we’ll help you find the right axle configuration for your load.

Custom Tri-Axle Builds & Upgrades

Beavertail Trailers specializes in custom builds engineered from high-grade Australian steel to meet your exact job site demands. Custom options include:

• Rail Styles: Choose between standard coaming rails or smooth, seamless coaming rails for streamlined load restraint.
• Ramp Systems: Heavy-duty manual ramps or 12V/24V electric-over-hydraulic powerpacks for fast machinery loading.
• Deck Configurations: Custom lengths, widening decks for oversized plant, and lowboy drop deck wells.
• Braking & Suspension: S-cam air braking systems with EBS paired with heavy-duty mechanical leaf spring or air bag suspension.
• Storage & Toolboxes: Under-chassis lockable toolboxes, dunnage cages, water tanks, and integrated winch mountings.