Foaming Wheel Cleaner. DoctorWax Foaming Wheel Cleaner is a professional high-tech formulation containing ASF Advanced Smart Foam technology quickly and effectively removes road grime, stubborn brake dust, tar spots, grease and salt from all wheel types and hubcaps. Long term barrier against dirt, stains and other dulling agents. Is a professional high-tech foam formulation containing ASF® Advanced Smart Foam. ASF® technology quickly and effectively removes road grimes, stubborn brake dust, tar spots, grease and salt from all wheel types and hubcaps - painted, clear coat, steel and factory coated. The foaming Wheel Cleaner creates a long-term barrier against dirt, stains and other dulling agents. Advanced Smart Foam ASF® Cleans on contact Non-acid formula Safe for all wheels and hubcaps