When I am buying car, I always research how much are tires. I always go with Michelin, Continental or Bridgestone (I nixed Good Year some years ago).
If I cannot shell out without sweat for those brand tires (considering how I am driving I always go for top notch) then that car is not for me.
Then again some sizes on some car do not make sense. I want to buy this year 2012 Toyota Highlander Limited (I need that JBL inside to kind of feel better considering I am going to drive soccer mom car). So, why in the [censored] they put 19 inch wheels? Luckily 17inch wheel is possibility too, so I will just put winter tires on 17inch aftermarket wheels, and AS tires on 19inch wheels, or maybe ask dealer if they can switch 19's for 17's and then have for both seasons 17inches.
When it comes to people who buy BMW's etc, most of them have no clue why BMW is BMW. For them it is the name, nothing else. When they say that their BMW has V6 engine I have a feeling I will get a stroke at that moment.