Went into Halfords today for some bits ,and thay have a wheel cleaning kit in there sale £6....so.....there is a small brush in there for cleaning the alloy wheels and its the right size for getting in the small beat places .I have had some white polish marks on the air intake grills ....now gone behind the rear shock rubbers in the engine bay dirt etc ..now gone ,quick get down to halfords and get (I dont work for them)