Just recently purchased a platinum extended warranty (84/100) from Jeff Steel @ Passport BMW in Camp Springs, MD. He was very upfront and had the best quote out of 6 dealerships I reached out to. I met him in person while I was down there for work and he was great! He's a busy guy, so I suggest email first to arrange the time.
Send him your mode/mileage/VIN for a quote. He will require your key for a key read to actually sell you the warranty. He can explain all the requirements when you reach out to him.
JEFF STEEL
PASSPORT BMW
BUSINESS MANAGER
jeff.steel@passportauto.com
301-702-6413