Full strength is insanely strong, it's amazing. However, if you want to keep your wheels and tires spotless, you'll need to add some elbow grease to this (or any of these products) using a wheel brush, tire brush, and Speedmaster brush. However, I used half of that bottle. on 4 x 22" wheels and tires. That's a lot of $$. I hated the spray bottle it came in. Wheels and tires that can leave uneven spray. 8 products, like me, in a standard bottle and full strength. It was worth saving $5 a wash compared to full strength just to put more effort into manually cleaning the wheels.