Just the difference between a low profile tire on a sport model and a full size tire makes a difference in the ride quality. Now it depends on how much quiet, smooth quality you can trade off for handling. I have an e430 sport, which does not ride a smooth or quiet as the regular e430, but the performance is greatly improved.

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98 E430(sport), 99 ML 320 (sold) , 05 C 230(sport) Mark