The Treadway Learning Centre brings together guides, FAQs and technical resources covering trailer brakes, suspension, wheels and trailer design. These articles are designed to help trailer manufacturers, engineers and trailer owners understand trailer components and make informed decisions.

Key Trailer Guides

These guides explain some of the most common trailer design and maintenance topics.

• The complete guide to hydraulic trailer brakes
• How to choose the right spring kit for your trailer
• Trailer rim buying guide
• Types of trailer suspension: Which is best for you?
• Trailer light buyers guide and FAQ

Quick Links

• Wheel FAQs
• Trailer Spring FAQs
• Torsion Axles FAQs
• Jockey Wheels FAQs

FAQ Videos

Short videos explaining common wheel measurements and terminology.

• How do I measure the PCD of a rim? (youtube)
• What is an offset and how do I measure it? (youtube)

Frequently Asked Questions

• Wheel FAQs
• Trailer Spring FAQs
• Torsion Axles FAQs
• Jockey Wheel FAQs

Videos (YouTube)

• How do I measure the PCD of a rim?
• What is an offset and how do I measure it?

Trailer Brakes

Information on trailer braking systems used on light commercial and heavy trailers.

• The best trailer brakes for different applications
• Mechanical override brakes explained
• Mechanical vs Electric vs Hydraulic trailer brakes
• Electric over hydraulic (EOH) trailer brakes
• Understanding breakaway systems

Hydraulic Trailer Brakes

Technical resources covering hydraulic braking systems.

• The complete guide to hydraulic trailer brakes.
• Hydraulic calipers for trailers: Everything you need to know.
• Choosing the right hydraulic brake system for your trailer.
• Hydraulic brake kits explained.

Hydraulic Brake Maintenance

• Boat trailer brake maintenance.
• How to bleed hydraulic trailer brakes.
• Hydraulic trailer brake troubleshooting.

Trailer Springs & Suspension

Information about trailer suspension systems, spring types and how to choose the correct suspension setup for your trailer.

Reference Resources

• Trailer Spring FAQs
• Leaf Spring Dimensional Drawings

Suspension Guides

Guides explaining the different types of trailer suspension and how they affect trailer performance.

• The best trailer suspension for your trailer.
• Types of trailer suspension: Which is best for you?
• Single axle vs Tandem axle suspension. Which is best for your trailer?

Spring Selection & Setup

Articles explaining different spring configurations and mounting options.

• How to choose the right spring kit for your trailer.
• Parabolic vs Conventional Leaf Springs: Comfort vs Load Capacity
• What's the difference between slipper and eye-eye leaf springs?
• Overslung vs Underslung Trailer Springs. Which Is Best for Your Trailer?

Spring Performance & Materials

Information about spring construction, coatings and technical considerations.

• Zinctech vs Painted: Which trailer spring finish is right for you?
• Understanding trailer spring "growth" and why it matters.

Spring Maintenance

Guidance on recognising when suspension components should be replaced.

• When to replace trailer springs.

Spring Videos (YouTube)

Short videos explaining key features of Treadway trailer spring kits.

• Treadway trailer spring kit overview.
• Why Treadway trailer springs have a Zinctech coating.
• Why the Treadway spring hanger bracket has an extra lug.
• Why the Treadway hanger bracket is easy to align to the chassis.
• Leaf spring features you should look out for.

Trailer Spring Products

Product categories related to trailer spring systems and components.

• Trailer springs
• Spring spare parts and hardware.

Trailer Tail Lights

Guides explaining trailer lighting systems and how to choose the correct lights for different trailer applications.

• Trailer Light Buyers Guide and FAQ
• Trailer Light Kits vs Light Boards - what suits your build?
• Boat Trailer Lights NZ - what matters for summer builds

Trailer Wheels, tyres & Rims

Guides explaining trailer rims, stud patterns and wheel fitment.

Rim Guides

• Trailer rim buying guide

Rim Measurement

• How to measure a rim PCD
• What is a rim offset

Trailer Advice & Technical Articles

General articles covering trailer design, maintenance and industry topics.

• Treadways commitment to quality and value
• Trailer regulations update
• Why manufacturing 3.5t GVM trailers makes more sense
• Mechanical override brakes explained
• Ascenso's off highway tyres (OHT) inroads
• Treadway adds Ascenso to their off highway tyre range
• Designing a light commercial trailer
• Tips on how to load and tow a trailer
• Preventing tyre dry rot
• The power of quality and ease of use for trailer manufacturers
• Buying a trailer? 3 tips from trailer owners
• Tyre siping: A complete guide
• Mechanical vs Electric vs Hydraulic trailer brakes
• Why We Use Zinctech and Geomet Coating on Our Components
• 5 Signs Your Trailer Axle Needs Replacing
• Understanding Breakaway Systems
• Electric Over Hydraulic (EOH) Trailer Brakes: How They Improve Control at 3,500 kg