I started by cleaning them with my collection of wheel cleaners, but even acid based ones weren't up to the job -
So i thought, fook it, off to the powdercoaters. I know it kind of defeated the idea cheap wheel i can refurb myself, but with the effort i would have needed, i'm glad i did!

The couldn't guarantee a match on the centre caps and wanted £15 odd for each one, no way was i paying £60+ for the centre caps, so i had a go at doing these myself. Managed a perfect match on the garage...

Alas too good to be true, because of the shadow effect of the wheels, whilst i tried to replicate a shadow effect (silver paint over a black base) on the centre caps, in the light they are bit dark. So it all depends where you stand as to how good they are! Still look good though, I may address this another day, but for now they are good enough.
Swapping the tyres from my old wheels turned out to be a nightmare. One of the locking wheelnuts failed due to the crappy design of the OEM pins and the tyre fitted couldn't get it. Another garage managed it for me, took it back to the tyre fitters and there were two nails in the tyre, so they sorted a puncture repair for me too.
Anyway, a quick picture i took in the garage with the wheels and centre caps fitted.
My gearstick gaiter was getting a bit tatty and had some very small paint stains on it from when i bought it. So changed to a soft leather one from Ebay, looks so much better (scuse the dust, inside needs cleaning...

And some pictures in today's sunlight...
And couple with the engine bay: