i have a set of BRAND NEW, never used, never mounted, Michelin Pilot Sport A/S (all season) tires in size 255/35. These will work on the factory E9x M3 19 inch front wheel. this is for 2 tires (pair).
tirerack sells them for $294 each = $588 for the pair. tirerack charges about $30 for shipping. so you would have to pay tirerack $618 all in.
i'll sell these to someone here for $500 all in!
this is assuming you live in the USA.
please PM me if interested...