 I test drove 2 loaded Q7'so and was really thrilled about the car and willing to fork over 72K until I found out about it having only run-flat tires and no possibility of a spare of any sort.  And the Q7 specific tire is apparently unique to the Q7, so getting a replacement in rural areas would involve spending a day or three in Bates Motel accommodations waiting for the new tire. Also, since the tires are more performance rather than high mileage rated, you'll likely buy a pair if the tires are over 15k miles. And the tires are pricey too at $300 to 400. So $800 for 2 tires, at least one overnight stay somewhere you didn't want,  and Bubba doing the work.  Since I do like driving cross country,  no thanks.