I have already driven 17,118 miles with these tires and experienced my first snowstorm with them. Doing my regular maintenance rotating my tires every 5k miles and making sure my tires are properly inflated every month, I have run into 0 issues. They drove flawlessly in the snow with minimal slippage. I enjoyed them and will keep buying Michelin tires in the future.

I put these tires on my 2017 VW GTI SE as a replacement for the Pilot Sport AS3+ that I had on there for the past couple of years. I loved the AS3+, the car had really great grip and it handled like it was on rails. The steering feel and turn in was very sharp and there was almost no lean in corners. The AS4 has somewhat better ride quality than the AS3+ and great grip but the sharp cornering feel and confidence in handling curves isn't there as with the AS4. It feels more like a grand touring tire with a grippier compound whereas the AS3+ feels more like a performance tire with the ability to be used in cold weather and light snow.

I just replaced Continental run-flat tires with the Pilot Sport All Season 4 (non run-flats). It is made a massive difference. The tires ride smoothly, steer precisely, braking is improved, and wet performance is so much better and confidence inspiring. A great combination of both sport and luxury. As to a number of comments about the tires being noisy, they really aren't any noisier than competitive tires or the tires predecessor, the A's 3+. I think it's just that the tone of the noises a little bit higher pitched and therefore more noticeable to some people. On the other hand, I noticed that there is no noise difference when driving on asphalt and concrete, which is unusual because most tires tend to be louder on concrete. Not so with these tires.

These were quite a bit softer and quieter than the Pilot 3 + tires removed after 40,000 miles. The Pilot 4 AS felt initially like it wouldn't be the same in handling as the 3+ AS but that was totally wrong. They handle great. I would definitely buy them again.

Had to replace the tires on my 2018 Civic Sport and I can’t believe the difference. I previously had some “high-performance” Falken tires that weren’t bad but after a couple days with the Michelin Sport A/S 4s I finally understand. This is the first Michelin performance tire I have ever driven on and my car is a completely different machine on these tires. The level of grip is superior to any tire I have ever had, even in the rain. My car feels like it is floating until I cut the wheel and suddenly it becomes glued to the blacktop. I am a very aggressive driver and understand the value of having tires you can trust on your car and I love these tires!!!

I am 60 yrs old and my wife is 67 yrs old. We bought a set of these tires 2 yrs ago for our Audi A7 and have 30,000 miles on them. They are already worn out to the red replacement stage. These tires are such a disappointment. I have always tried to buy Michelin but will be looking elsewhere now.

Delaminates and must be replaced before tread life. I have had 3 sets of AS3, then AS4's and ALL have delaminated in the front just where the tread meets the sidewall. I use my Corvette Grand Sport for performance driving, but these tires are rated f.or high performance. I currently have less then 4,000 miles on my tires and the fronts need replacing

There is a reason OEMs choose Michelin. The Tesla model S must have smooth, quiet tires that absorb various road imperfections and maintain good handling characteristics. Road noise is a big concern when driving a vehicle that has no drivetrain noise.

Significantly louder than the HX MXM4's they replaced. Noise starts right at 40mph and gets significantly louder at highway speeds. Likely going to swap them out for another brand as this is the only Michelin tire that fits 245/50/R17. Tire handles great but I just can't deal with the noise.

I replaced my Pilot HX MXM4 93V XL, which i had for 11 years for off winter use. New Sport All Season 4 are much better on wet surface, but the noise level when driving 50-80 km/hr is quite loud...louder than the Pilot HX MXM4's, and louder than my winter tires. So I plan to keep them on this winter and will report back how well "All Season" means.