Originally Posted by ENFORCER
A pressure washer will clean the wheels well and will not damage them. I use it on my wifes car that has a complex design that is a bitch to clean. It will also make the callipers nice and clean.
I'd be careful with a pressure washer. Use it at too shallow of an angle with even the green tip and you can lift decals, etc. Yellow and white can loosen paint.
[I may have a reason to know this]
There is a two-pressure quick adjust wand you can get that works great for vehicles, as you don't have to stop, swap the tip, etc. all the time. It doesn't seem able to lift loose paint or decals on the higher setting.