Zeps Purple Industrial Degreaser is the best tire cleaner that I have used. Better than all the tire specific cleaners that I have tried. After about a dozen sets of tire cleaned with it, it has never caused any browing/blooming effect. It seems to only clean the surface and not leach anything out of the tire. Which in my experience is what causes the browing effect as the carbon and protective wax migrates to the surface to replace what was leached out.
I use it at about 8:1 ratio for tires.
Hope your using all the protective gear the msds sheet says to, it's got mono butylether in it. Gloves, goggles, well ventilated area etc. It's absorbed through the lungs so misting it on to tires, well you'll get the point.
Overexposure of this product by inhalation or absorption can produce central nervous
system depression resulting in headache, nausea and/or dizziness. Repeated or
prolonged exposure to the substance can produce damage to blood, kidneys, liver,
upper respiratory tract, central nervous system (CNS). Repeated or prolonged contact
may produce chronic eye irritation and severe skin irritation. Repeated or prolonged
exposure to spray mist may produce respiratory tract irritation leading to frequent
attacks of bronchial infection.
Dermal contact. Eye contact. Inhalation. Ingestion.
Section 3. Hazards Identification
Acute Effects Routes of Entry
Inhalation of the spray mist may produce severe irritation of respiratory tract, characterized by
coughing, choking, or shortness of breath. Can cause central nervous system depression.
Causes eye burns. Direct contact with the eyes can cause irreversible damage including
blindness.
May be fatal if swallowed. May cause burns to mouth, throat and stomach.
Skin contact may produce burns. Harmful if absorbed through the skin. Skin inflammation is
characterized by itching, scaling, reddening, or, occasionally, blistering.
Eyes
Skin
Inhalation
Ingestion
See Toxicological Information (section 11)
There's got to be a safer way to clean tires!