Originally Posted by metroplex
I was curious about the backing plates because reviews for the Porter 7424 said it didn't come with one and that I had to buy special pads.
If you purchase the PC XP, you should take off the white pad that comes with it and put it back in the box. It is not suitable for polishing your car.
You will need to determine which size pads you want start with - 5.5" or 6.5". That will help determine the backing plate size. Autogeek and others offer lots of kits with and without the polisher.
For someone new to polishing I would recommend Adam's as they make it simple - For correction use the orange stuff (Swirl and Haze Remover) on the orange pad, and use the white stuff (Fine Machine Polish) on the white pad. If you are using the sealant (Machine Super Wax) use the black pad. After you have become more familiar with the process, you can mix and match the products and pads. If you decide to try other pads you already have a 6" backing plate or try other polishes you already have the pads.