what wheels are these?

ive just seen these advertised and really like the design/style of them. i have seen them on a 211 before too but never on a c class. are they available for the c-class? if so, what sizes are they available in? i dont want a harsh ride for the kids sake and i dont want expensive tyres. thanks

http://www.ebay.co.uk/itm/MERCEDES-B...item2325155d31