I just took my cracked OEM style 157 to Perfect Metal Finishing in Newark (right off 21). They did an awesome job fixing the crack and only charged $60. The name of the person I dealt with was Ariel. I definitely recommend this place and have been riding around with the rim for about a week with no problem at all.
2010 E92 TiAg 335 x-drive / Xenon's / Premium Package / Sport Package / M-Sport Package / OEM Spoiler / Hardwired V1 / Lux H8v3 / JB4 PnP /Injen Intake / AMS FMIC / Stett Chargepipe / Synchronic BOV / Custon Tuning / KW1 Coilovers / 12mm Spacers Square / Carbon Fiber wrapped side reflectors