www.106parts.com have a stock of brand new Series2 which are the slightly wider 6' Steel rims for £40 per wheel - Brand new
This is slightly more expensive than main dealer but only about £2 or £3 per wheel. Go into your Citroen main dealer and give them your chassis number and ask what are the correct wheels for your car.
Mine says the car left the factory on 14' white steels wheels!!!
I got these off a another saxp member and are half way through refurbing them - and the centres are Berlingo
Phase1 106 Rallye's or Series1 Rallyes had slightly narrower 5.5' steelies so they take a 175/60/14 tyre where as the Phase2 106/Series2 had a slightly wider 6' steelie taking a 185/55/14.
I got the 5.5' series1's