This stuff is great, well worth stocking up on it! Recommend using this with a good wheel brush, cleans very well just following the instructions on the bottle. Usually $20.99 for a single bottle @Repco, Super Cheap have the SCA exclusive 700ml's for $34.
I price matched at Super Cheap Auto with no issues.
FROM THE REPCO PRODUCT PAGE
-No acids, not corrosive or caustic and pH balanced
-Safe on all wheel types including clear coated, polished alloy, chromed, painted, steel, carbon, anodised, billet, magnesium, matte finish, and even plastic dipped/coated wheels
-Epic for high performance and European cars with heavy brake dust issues
-Quick to use. Just spray on, quickly scrub and then hose off (pressure washer is strongly advised)