I'm sure there are quality shops in the Bay area. Check with a trusted indy repair shop or higher-end used car sales place (or friendly dealer) for suggestions on who they use/trust.
The Golden Gate Chapter of BMW CCA had a detailing tech session with Leo Chan, owner of DetailAddict shop in Santa Clara (detailaddict.com) - maybe he has some suggestions.
From the GG chapter newsletter, here's the list of sponsors/shops:
https://s19711.pcdn.co/wp-content/up...e-q42018-1.pdf
CLUB DISCOUNTS
SHOP/SUPPLY CITY DISCOUNT PHONE WEBSITE
Alekshop Fremont 10% Labor/Free Insp. 925-609-4559 alekshop.com
Auto Analysts Castro Valley 10% Labor 510-582-0201 autoanalysts2.com
Bavarian Enterprises Santa Clara Various Parts 408-855-8000 bavarian-enterprise.com
Bavarian Motorsport Milpitas 10% Parts 408-956-1662 bavarianmotorsport.com
Bavarian Professionals Berkeley 10% Labor 510-524-6000 bavpros.com
Bavarian Tuning Santa Rosa 10% Parts & Labor 707-575-3757 bavarian-tuning.com
Berkeley Motor Works Albany 10% Labor 510-528-1214 berkeleymotor.com
Bimmers Independent San Carlos Various 650-591-2474 bimmersindependent.com
BTM Motorwerks Campbell 5% Parts & Labor 408-369-1911 btmmotorwerks.com
Catalpa Street Garage Santa Cruz 10% Parts 831-464-2269 catalpastreetgarage.com
Contra Costa Auto Srvc Concord 10% Parts & Labor 925-798-1205 concordautorepair.net
Corporate Auto Works Mountain View 10% Parts & Labor 650-691-9477 corporateautoworks.com
Diablo Motors San Ramon 10% Parts & Labor 925-830-4269 diablomotors.com
Dinan Engineering Morgan Hill 10% Labor 408-779-8584 dinancars.com
Double 02 Salvage Hayward 10% Used Parts 510-782-2002 002salvage.com
EDGE Motorworks Dublin 10% Labor, Free Track Insp. 925-803-8080 edgemotorworks.com
EDGE Motorworks Mountain View 10% Labor, Free Track Insp. 650-965-8337 edgemotorworksmv.com
Flintworks Campbell 15% Repairs & Services 408-371-3380 flintworksauto.com
German Auto Santa Maria 10% Parts 805-922-1262 germanautosm.com
German Auto Body Santa Clara $100 off repairs > $1,000 408-727-3368 germanautobody.com
German Auto Kraft Belmont 20% Labor on Maint, & Brakes 650-595-2777 germanautokraft.com
German Motors Cllsn Ctr San Francisco $100 off repairs > $1,000 415-551-2639 sfgermanmotors.com
GS Tuning Santa Rosa 10% Sales & Service 707-284-2680 gstuningbmw.com
Jam Engineering Sacramento Various Parts 800-526-2677 jameng.com
John Gardiner Auto San Francisco 10% Labor 415-777-2697 jgauto.com
Life is Good Racing Livermore Various 925-243-9270 lifeisgoodracing.com
M Service Walnut Creek 10% Parts & Labor up to $100 925-932-8744 mserviceinc.com
Milt’s Service Garage Vallejo 10% Parts & Labor 707-643-7548 miltsservicegarage.com
Nate Smith’s Optimal Auto Santa Cruz 10% Parts 831-476-1332 optimalauto.com
Phaedrus San Francisco 10% Parts 415-567-8000 phaedrusmd.com
Pete’s Inc. San Francisco 10% Parts & Labor 415-441-5896 petesinc.com
Performance Technic, Inc. Fremont 10-15% Parts 925-426-1361 performancetechnic.com
Portola Valley Garage Portola Valley 10% Labor 650-851-7442 pvgarage.com
RennWerks Performance Campbell 10% Labor & 5% Parts 408-370-7480 rennwerks.com
Rossi’s Tire & Auto Srvc Salinas Various 831-424-0011 rossitire.com
SAS German Auto Pleasanton 10% Parts 925-846-4886 sasgermanautotech.com
SD Auto Tech Campbell 10% Labor 408-866-0606 sdautotech.com
Sound Innovations Union City 10% Parts 510-471-9062 soundinnovations.com
Track Star Racing Gilroy 10% Parts & Labor 650-961-2350 trackstarracing.com
Valley Motorwerks Rancho Cordova 10% Parts & Labor 916-636-9526 vmwerks.com
Vanguard Motors San Francisco 10% Labor 415-255-8450 vanguardmotors.com
West Bay Bavarian San Rafael 10% Parts & Labor 415-457-0820 westbaybavarian.com
2006 330ci ZHP - Silbergrau Metallic / Stoff Laser/Anthrazit / Alu Black Cube trim / Adaptive Xenon headlights / HK hi-fi system / heated front seats