Yes, the old traditional version of what a "super single" is would be converting your rear duals to one wide single. It started with military grade vehicles, campers, semi-trucks and transitioned to daily drivers. In the current aftermarket wheel world, the term "super single" started to be used years ago to define the more common practice of running a single front on a standard dually truck by pulling the adapter off. Something that was started by American Force when they offered to custom build forged wheels with a single front option as opposed to traditional dual....and is now offered by almost all manufacturers and called "super single". The older traditional "super single" in the rear was done for practical use - improving off-road performance, traction, reduced resistance. The term "super single" that is used by manufacturers like Fuel, DDC, American Force, KG1 Forged, etc. refers to something that is purely visual for the style. It's all cosmetic with a different look for the front.