Dually Wheels

Large Trucks and SUV's tend to have an 8 Lug pattern.

Larger Trucks with dually wheels have more choices today due to the immense popularity of customizing all sizes of trucks.  Even the heavy duty trucks can chrome out or upgrade their wheels to larger diameter wheels and tires and that includes the 4 in the back.

Look at any of the online wheel and tire stores and you will see a pretty good selection of sizes and styles.  Since duallies are essentially designed for trucks hauling heavy loads, some modifications might be necessary to fit larger diameter wheels under your truck.  Usually the manufacturers have kits, but a few places won't even sell over the internet because they want to get as much info about your truck as possible.  Not a bad idea actually.

Depending on the tires you decide on, you might need some modifications to the factory fenders.  If you are putting semi tires on, you might even need a lift.  It's a good idea, unless you know what you are doing, to get a recommendation from the manufacturer as to whether or not your set up will require heavy modification or not.  You are already going to spend 3 to 6 thousand dollars on wheels, so you don't want to sink another 5k into body modifications because you thought something would fit.

 Of course, you can always go to your local truck accessories place and get their recommendation for machining and fitting wheels.  Either way, the more time you spend researching how a particular wheel will fit your truck, the happier you are going to be when you first roll out.