On the plus side I finally figured out why my tire isn't holding air; on the negative side it's due to a crack on the inside of the wheel:
@positronrelay Hopefully it's under warranty; dealership is booked for 2 months though.
@Blenster Oh crap. Slow leak? If so tire slime might help in the short term. Just keep an emergency pump on you and make sure your spare has air.
@Blenster That's unfortunate. I'm sorry. Any chance you can get a replacement wheel for a reasonable price?