If you didn't feel a vibration in the steering wheel or the car then you could leave it as is. I have not had good luck repairing bent wheels. Did it once back in the day and they just bent again... I would go to one of the OEM BMW parts venders found here in the sponsor classified to find the best price on replacement wheels. ZCP wheel are around $500 ea. The dealer will rip you off.
'13 SSII M3 Coupe - KW Clubsport 3-way, Akrapovic Evolution, ESS Tune, StopTech Trophy, IND Euro Front Bumper and Gloss Black Mirror Covers, TMS Studs/Lugs, BMW Performance Carbon Fiber Spoiler/Interior Trim/Center Console, BMW Edition Grills/Gills, BMWPedals Extended DCT Paddles, Advan TC3 18x9.5 & 18x10.5 - Hankook RS3 (Track), HRE R40 - 18x10 & 18x11 - Michelin PSS (Street)