Trailer Components Suppliers in New Zealand

Treadway Ltd is a leading trailer component supplier in New Zealand, supplying high-quality axles, braking systems, suspension, wheels, tyres and couplings to trailer manufacturers, engineers, repairers and parts distributors nationwide. As a 100% New Zealand family-owned business established in 1976, we specialise in reliable trailer components designed for New Zealand conditions and applications.

Supplying trailer components nationwide

Based in Whangārei, Northland, Treadway supplies trailer components throughout New Zealand. Our customers include manufacturers building trailers from the ground up, engineers and fabricators specifying components for compliance and performance, and repairers sourcing dependable replacement parts. With national delivery and deep product knowledge, we support both high-volume trade customers and specialist operators.

Trailer components we supply

Trailer axles

We supply a comprehensive range of trailer axles for light commercial, agricultural, boat and caravan applications. This includes straight axles, dropper axles and gullwing axles, with configurations to suit braked and unbraked trailers. Our axle range supports a wide variety of load ratings and build requirements, making them suitable for everything from general-purpose trailers to specialised boat trailers.

Trailer braking systems

Treadway supplies mechanical, hydraulic and electric trailer braking systems engineered for safety, durability and compliance. Our braking solutions are commonly used on flat deck trailers, digger trailers and boat trailers, with component options selected to suit corrosion exposure, load requirements and intended use. We also supply brake kits and individual components for repairs and upgrades.

Suspension and spring kits

Our suspension range includes leaf spring kits and suspension components designed to handle New Zealand road conditions and working environments. These systems are used across commercial trailers, caravans and off-road applications where durability and load control are critical. We focus on proven designs that deliver consistent performance over the long term.

Wheels and tyres

We supply trailer wheels and tyres selected to match axle load ratings, braking systems and intended trailer use. Our range supports manufacturers and repairers looking for dependable combinations that meet safety standards and perform reliably under load, whether for on-road transport or more demanding environments.

Couplings and safety components

Treadway supplies trailer couplings and safety components designed to provide secure, compliant connections between towing vehicles and trailers. These components are specified across a wide range of trailer builds, from light utility trailers through to heavier commercial and boat trailers.

Who we supply

We work closely with trailer manufacturers, engineers, fabricators, trailer repairers, parts distributors and tyre shops across New Zealand. Our role is to provide consistent supply, technical understanding and product ranges that allow our customers to build, maintain and support trailers with confidence.

Trailer components for New Zealand conditions

All trailer components we supply are selected with New Zealand conditions in mind, including varied road surfaces, coastal environments and demanding commercial use. Our experience working with local manufacturers and repairers means we understand the practical requirements of trailers used for work, transport and recreation throughout the country.

About Treadway Ltd

Treadway Ltd is a New Zealand family-owned business established in 1976. From our base in Whangārei, we have built a reputation as a trusted trailer component supplier, supporting the trailer industry with dependable products, long-term partnerships and practical expertise. Our focus is on supplying components that help our customers build trailers that perform safely and reliably, wherever the journey leads.

Frequently asked questions

Do you supply trailer components throughout New Zealand?

Yes. Treadway supplies trailer components nationwide, supporting customers across both the North and South Islands with reliable delivery and trade-focused service.

What types of trailers are your components used on?

Our trailer components are used on a wide range of trailers, including flat deck trailers, boat trailers, caravans, agricultural trailers and light commercial trailers.

Do you sell trailer components to trade and retail customers?

Treadway primarily supplies trade customers such as manufacturers, engineers and repairers, while also supporting retail and end-use customers through approved channels.

Are your trailer components suitable for New Zealand conditions?

Yes. Our product ranges are selected specifically to perform in New Zealand conditions, including coastal environments, heavy loads and frequent commercial use.