Noticed better handling right away, improved ride, too. Had to drive in a heavy snow storm, with 4 inches on the ground. Frigid temps prevented salt use, and the snow was over an ice layer. These tires were confidence-inspiring. Many cars were pulled over, even another C300 4-matic (no doubt on OEM tires.)Didn't have a problem on my 50 mile drive home. Have read that treadwear is more than some, but I'll live with that tradeoff.