Hi Mate, having been through all this myself recently I might be able to help.
First thing to say it post a shot of the nuts on the other side of the rim!
My BBS Style5s are two-piece rims and have a normal hex-nut on the back of all 34 bolts per wheel.
Once you have the nuts off you need to very carefully tap out the bolts if they're splined. It takes forever be warned!
The last set I did wouldn't budge. even with hammer blows via a wooden block. I ended up taking them to work and using a hydraulic press to press them out one by one. The most ridiculous bit of this was that it took between 1 and 2 TONS of pressure PER BOLT to move them. The corrosion product (some sort of oxide) has effectively bonded them in SO hard. When the pressure was high enough to crack the corrosion product, they flew out so hard they chipped the epoxy floor of the workshop. It was very precarious and I was flinching with every one - I had 130 or so to do !!! Once they were out I soaked them in viakal for a couple of hours and this digested the corrosion scale which was left on the splines. I then cleaned them up individually with a wire brush on a dremel / drill.
has that put you off yet?!?!?!
I do however have a complete set of Stainless bolts which I bought brand new from Persche and Partners in Germany they weren't cheap @ £160 for the full set including stainless nuts too!
Google ''Titanium Touch'' and send an enquiry asking what bolts you need if you want to buy new ones, you WILL need to liberate at least one of them though, so you can see what type you need.
Sorry to be the bringer of bad news. Buy the right set of wheels and you can have a seriously rewarding turnaround to be proud of, buy the wrong set and you have so many man hours on your hands to sort them out it just isnt worth it!!
Alfter you done all that you need to split the rim from the star, not always easy itself - even with the bolts out!
The use Nitromors to strip the lacquer form the rim and polish them. It looks like you have some pretty deep pitting in the usual area around the holes in the rim; this is a galvanic corrosion effect and is a fact of life unless you can effectively electrically insulate all the studs from the rim - not easy!!
You will need to get the rims machine-cut to remove the pit but don't remove too much material... The other option is to live with the pit and just polish them up as best you can!!
give me a bell through Pro-detailing if you want to know where to get the kit to polish them from...
Cheers - Nick.
www.pro-detailing.co.uk