If you're in the market for a new trailer, you've probably noticed the dizzying array of hub kits, axle components, and other parts available. It can be overwhelming trying to figure out what you need - especially if you're not a seasoned trailer expert.
At Trailer Supplies, we get a lot of questions from customers who are unsure about the right parts for their setup. That's why we put together this guide to help you navigate the world of trailer hubs, brakes, and suspension. By the end, you'll know exactly what to look for to get the perfect fit for your 3.5K–7K trailer.
Understanding Trailer Axle Weights
The first step is to determine the gross vehicle weight rating (GVWR) of your trailer. This is the maximum weight the trailer can safely support, including the trailer itself, cargo, and any passengers. Typical GVWR ranges for smaller to medium-sized trailers are:
- 3,500 lbs (3.5K)
- 5,000 lbs (5K)
- 7,000 lbs (7K)
Once you know the GVWR, you can start looking at the corresponding axle and hub components. As a general rule, you'll want to match your axle and hub capacity to at least 10-15% above your GVWR. This gives you a comfortable safety margin and helps prevent premature wear and tear.
Choosing the Right Trailer Hubs
Trailer hubs are the foundation of your wheel assembly, so it's important to get the right ones. The key specs to look for are:
- Bolt pattern: This refers to the number and spacing of the lug nuts that attach the wheel. Common patterns are 5 on 4.5", 5 on 5", and 6 on 5.5".
- Bearing type: Trailer hubs use either tapered roller bearings or ball bearings. Tapered are more durable for heavy-duty use.
- Hub capacity: Make sure the hub is rated for at least 10-15% above your GVWR.
For a 3.5K–7K trailer, you'll typically want a hub with a 3,500 lb to 7,000 lb capacity, depending on your exact GVWR. Trailer Supplies carries a wide selection of hubs in the most popular sizes and configurations.
Trailer Brakes & Suspension
In addition to the hubs, you'll also need to consider your trailer's braking system and suspension. Electric or hydraulic trailer brakes are a must-have for any trailer over 3,000 lbs. And the right suspension - like leaf springs or torsion axles - will ensure a smooth, stable ride.
Again, it's important to match these components to your GVWR. Trailer Supplies has pre-engineered brake and suspension kits designed for 3.5K, 5K, and 7K trailers, taking the guesswork out of the equation.
With the right hub, brake, and suspension setup, you can hit the road with confidence, knowing your trailer is equipped to handle whatever you throw at it. Stop by Trailer Supplies or give us a call to get the perfect parts for your rig.