What are current (and future) buyers of the new E90 planning to do once the original run flat tires (RFTs) wear out? (That will be around 20-30K mi on the standard models, and about 8-12 K mi (+more?) with the Sport Pkg).

A) I’ll always replace them with what came stock from the factory. I’m prepared to pay around $1000-1500 for a set of these types of tires.
B) No way I’m spending that kind of money every two years just on tires (every year if I have the SP). I’m going with conventional tires, where I’ll have 25 times more options on tires and tire shops, ranging from $400 - $1200 depending on my tastes for performance, durability, ride quality, etc. I’ll have to make contingency plans to take up space in the trunk with a full size, a doughnut or a fix-a-flat can (+electric pump) and/or a combination of these depending on where I’m driving. I’m also prepared for whatever changes come along with conventional tires since the E90’s suspension was designed all along to accommodate RFTs.
C) I hadn’t thought about how expensive the non-covered maintenance of a new 3-series sedan will be. I’ve been on the fence on deciding which car brand to get, and this consideration is pushing me away from BMW and more towards brand-X.
D) What a great idea. I don’t care if I have to pay $400-600 to have a flat tire replaced if I get one, specially if I may even be able to let a week go by and still continue driving. If the probability of having to deal with a tire change on the spot decreases by an order of magnitude, I don’t mind spending the extra money every time I need to replace tires.
E) I don’t care about these considerations. I always lease and return the car before it’s time to deal with tire changes.
F) Do tires need to get replaced?