Not wrong, but probably overkill. Basically, yes, misting it. I just spray the tire with the hose, then spray on the TRC and scrub. It may be closer to 6-10 sprays, but I do have low profile tires, 225-45-R18, so your mileage may vary...but nowhere near what you've been using, I don't think. I also use the (old, longer bristle) red Adam's tire brush. Do you have either that or the new, shorter bristle one? If not, I highly recommend it. It foams up the cleaner really well. You'll get great results and I think be a lot happier overall.