It just clicked with me that the i4 is supplied with NON runflat tires. No wonder all the reviews say how good the ride is! I wonder if this change is for the ride characteristics alone, or you cannot get the weight rating needed in a runflat for this heavy car? I'm also guessing the rear has the height controlling air suspension due to the new displacement sensitive shocks. These need to be kept in the same position regardless of weight in the car to function as designed.
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