This was a huge improvement over the noisy, bumpy and stiff tires that came with my used, low mileage 2004 Saab 9-3 Aero Convertible. It's a quiet, smooth ride and very comfortable tires. Even his wife agreed after driving a hundred miles back and forth. This improved the steering and braking behavior with greater lateral acceleration when changing lanes. They are excellent even in heavy rain, no aquaplaning yet. Rolling resistance was perceived as lower, with an apparent improvement in mpgβ¦