I personally have never had the "opportunity-I guess" to own a 4 wheeled vehicle with Michelin tires, but I will testify that their motorcycle tires are pathetic! No grip unless you buy the hypersport tires. Then, they only last 2500 miles on the rear and way overpriced! Believe it or not, Continental makes a great street/strip bike tire that grips as well as the Michelins and wears MUCH MUCH better and it is cheaper too. I am sure that some of this could very well carry over into car tires????