I read Motor Trend's review indicating that the ride was very stiff. At first I wasn't too concerned, but now I realize my wife will not be happy if it is very bumpy and probably won't let our daughter ride in it. Probably would still get the car, but would limit its usefulness. She hates the ride quality of the Mazda RX8. How do you think the Model 3 will compare (assume 18" tires)?