Yes, the higher the percentage of carnauba the better as that's what makes the hardness once applied. But take a look at poorboys, it's not a product we have here. What you are wanting to do is keep the oxidation process from taking hold with a barrier of some sort. Even when the wheel is virgin and Uncoated the second they are exposed to the atmosphere they are already oxidizing. And definitely better done off the car where you can set the wheels somewhere comfortable. Don't forget about the inner wheels they are actually the most susceptible part. HTH JIM