they probly polished at the edges and need the same doing to the center
makka

Did it all with the tyres on! Just take a couple of sheets of
newspaper and cut out a circle the size of the wheel, then stick it to
the wheel with masking tape, trying to get the edge of the tape in
between the wheel and the tyre. If you're careful, you can usually
re-use this for each wheel.
Chrome paint came from B&Q, but I'm pretty sure that I've seen it in
other DIY stores. Try and get the plasticote stuff, because a friend
of mine tried some other "shiny" paint that was nowhere near as good.
The laquer came from the local car-spares place. Again, any such
place should have some clear laquer amount their other auto paints.
As with any spraying on a car, the results you get are directly
proportional to the effort you put in. Make sure each coat is dry
before spraying the next one, etc. It's also very important to get the
wheels clean. The primer won't stick to brake dust. You might need to
employ an old tooth brush (note "OLD toothbrush" and not "The missus'
toothbrush") to get into the hard to reach bits!

Hope this helps,
good luck!

Dan