[Canadian_Yoda]

I'm imagining that the rust is around the wheel wells? Is it small rust bits? Like little things stuck to the paint?

These huge disc brakes seem to discharge a lot of material, and it likes to stick to the quarter panels and bumpers in direct line of exposure and make a bloody mess.

If it is as I described, your best bet would be a claybar treatment followed by a multi-stage polish/wax application. Meguiars and Mothers both make good consumer grade products for this.