I picked up my M3 on July 28, 2018. This is my first car without a spare tire. After doing a bit of research I have put together a kit for my M3 to deal with a flat tire if roadside assistance is not an easy option. My kit includes:
Viair 88P Compressor (Purchased on Amazon)
I got out my optional tire pump this evening, plugged it in and found it works very well.
The pressure gauge is lighted, gee that's nice. Hah, the vanity mirror ......
Anyway, a nice little pump.