Tarting up manky alloys

if you want a quick job try this

Nitromors to get all the existing s*it off, quick sand with some 600 grit wet and dry, acid etch primer, some normal primer to get a bit of build. If you're fussy, sand the primer with some 800, then topcoat it.

Some wheels are a mare to spray but I think MX-5 ones aren't too bad a shape. I've always thought rigging up some sort of turntable like they use for glazing pots would be a good idea.

I'd be interested to know how long the finish lasts.

Call in at an industrial blasters/powdercoaters and ask someone 'round the back how much for all 4 blasting and coating. Point out you don't need a receipt and they should do 'em for £20 each, I know my local one does 'cos that's how much my last set cost :)

Powdercoating is IMHO a lot better and resiliant finish than paint ;)

And believe me, you'll be bored and aching before you've finished a wheel if you do it yourself, life's too short :)