Let me mention my 2018 SL63 came with Continental conti sport contact 5p, and I found them all around an OK tire, but they wore out in 15,000 km... So I went seeking a better tire, I dont care about wear that much, I spent a lot of money on my car and good or the BEST tires are a must regardless of whether they last 10k or 50k, I saw a lot of good and even excellent ratings for the michelin 4s tire, its new and has some new compound in the rubber that is supposed to give better grip.. I have a powerful car with lots of torque, 668 lb lbs, so when I give it I want grip.. I put them on the rear once the Contis were done... These 4s tires when I first installed them on the rear, I found the grip they gave was incredible ! I was so happy, I could finally launch my car properly, but now with 8000 km on them (5000 miles) they are not gripping nearly as well, I would say they are now worse than the conti 5p.. I have lots of tread left, but for some reason they only grip well on NEW pavement. Anything else other than NEW pavement and I can put my car sideways in 3rd gear with my traction control off, and 3rd gear goes up to 100 mph so that is very scary. I have to say I am disappointed the performance of these tires has diminished so very quickly, and since they have lots of tread left I find that I am going to have to replace them already. They are also a bit soft in corners... Thinking of the Continental 5p again, or perhaps the continental extreme contact. Sport cup 2 perhaps???? I just know I will not buy the 4s again.