I recently bought this product and really liked how well it works, but it's a little expensive compared to what you can get elsewhere. I can pick up a gallon of Bleach White tire cleaner at most auto stores in town for about $8 a gallon, which works just as well.
A solution for alloy wheels, spotted or streaked, from using Wesley's Bleach White tire cleaner. This worked for me. A small can of rubbing compound paste (fine grit), like Turtle Wax or Mother's. A box of baking soda & a bottle of hydrogen peroxide.