Years ago, we went to a BMW NA event where we drove BMWs and car from competitors (M-B, Jaguar, Lexus, Porsche). I grabbed a BMW NA Bubba and dragged him over to a M-B E Class and showed him the spare tire under the trunk floor. I then showed him the aftermarket spare tire hogging up the trunk in my F10 535i. I told him my next car will have a spare tire under the flat floor of the uncluttered trunk. I'll never forget his response "Yeah, but how often do you get a flat tire?" I asked for his business card so I can send him a picture of my next car and its spare tire stored under the trunk floor.
The event was held at BMWoB (BMW of Bubbaville) I have them do all my tire work, and I just happened to have a tire/wheel off my Chevy Cobalt in for a remounting (they'd put it on backwards). They'd finished it and it was leaning against the wall by the Service Department's entrance. I pointed the tire/wheel out to the BMW NA Bubba, and told him "This week." I was lying about it being a puncture, but it worked better for making my point.
We balked at buying an E84 X1, F25 X3, and leasing a F15 X5 40e because of their lack of spare tires and spare tire holes under the cargo area trunk.