I used summit racing. I know my fitted hat size and so I was comfortable going with them. They're an online retailer.
2012 JZB E92 M3 Coupe. DCT/ZCP. Paint Match IND Cosmetic Package, Arkym Bumper, Verstrabe Paddles, LUX Angel Eyes, Vorsteiner double sided CF CSL trunk lid, Evolve Valve Exhaust, 19x9.5 et 21, 19x10.5 et 22 TE37 SL Pressed Graphite