Choosing the right wheels for your caravan can be a complex process, especially when it comes to hub-centric versus stud-centric location. 

In this Cruisemasterclass, we will explore the differences between these two methods and highlight some important considerations when choosing wheels for your caravan. 

Cruisemasterclass Episode 9: Wheel Mounting

Hub-centric vs Stud-centric

Hub-centric and stud-centric location refers to how wheels and tyres are centralized onto the drum or hub. 

Hub-Centric Wheel Mounting

Hub-centric location is when the wheel is centrally located on the drum or hub using a machined center bore in the wheel that matches a spigot on the drum. The wheel nuts are then tightened to produce friction between the rim and the drum. 

Stud-Centric Wheel Mounting

Stud-centric location, is centered using a taper on the wheel nut and a taper in the nut seat on the wheel. These are not as accurate as a hub centric, but are pretty common in aftermarket parts.

Importance of Using The Correct Mounting Location

While hub-centric location is the preferred method on OE vehicles like Land Cruisers, many caravans and camper trailers use stud-centric location. 

However, it is important to note that using the correct location method is critical to prevent vibration, potential wheel loosening, and even the risk of the wheel coming off. 

If your caravan uses a tapered wheel nut and stud-centric location, it is still possible to fit it onto a spigot-attached drum for added stability and accuracy. This requires a specific spigot size, so it is important to specify this at the point of order to ensure compatibility, below is an example of different spigot sizes and how measurements are taken.  

For more information on choosing what spigot size to use with your wheels, see our Drum/ Hub spigot size documentation.

Hub-centric vs Stud-centric Wheel Nuts

In addition to the differences between hub-centric and stud-centric location, it is also important to consider the wheel nuts themselves. Hub-centric nuts have a flat face and a parallel shank that allows the centralizing aspect of the hub-centric location to do its job. Stud-centric nuts, on the other hand, have a taper to align the wheel and hold it on. 

Using the hub-centric method is preferred to ensure the best combination of wheel concentricity, wheel holding, and clamp force. It also offers a backup in extreme situations, providing added peace of mind while on the road. Below is an example of wheel nuts with tapered on the left and hub-centric nut on the right.

Interaction between the Wheel Nut & Stud

One important aspect of mounting the wheel to the hub or drum is the interaction between the wheel nut and the stud. It is crucial to make sure that the stud is not bottoming out inside the nut before the wheel is adequately clamped to the drum face. 

If this happens, the wheel may come loose and could potentially shear the wheel studs off while driving.

Wheel Mounting Considerations

When mounting wheels on your caravan, Make sure to consider the location method, type of wheel nut, and the interaction between the nut and the stud.

Choosing the correct mounting method and components will prevent vibration, potential wheel loosening, and reduce the risk of the wheel coming off, ensuring your next trip is hassle free. 

For more caravan and towing tips, make sure to keep an eye out for the latest episodes of our Cruisemasterclass series by subscribing to the Cruisemaster YouTube channel and following us on Facebook & Instagram.