My 1999 HRV has just had all four wheels powder coated and boy what a fantastic difference. All four alloys were done in one day and were acid dipped, shot blasted and powder coated.
On the exterior they were not too bad originally but had signs of corrosion and flaking paint. The insides of the alloys were a different story - really manky!
For anyone in the Colchester, Essex area I can thoroughly recommend RimRenov8 who are based off Peartree Road. (I have absolutely no affiliation to the company, simply recommending them for the excellent work they have done). I visited several places before selecting these guys and all the others did not fill me with confidence.
Pics to follow for anyone interested.