We've had our Mazda 5 for 5 years now and have put three full sets of tires on it and at least 2 other random replacements- and it only has 95k miles on it- all highway. The low profile wheels don't last and are fairly expensive to replace. In addition, our transmission gave out in year 2 and had to be completely replaced (luckily all covered by the warranty). Also, the wheel alignment is not great (perhaps lending to the massive tire consumption) nor are the shocks at this point. So the ride is less than smooth. The first two years we LOVED the car, but it certainly has not aged well.