I replaced the original tires on my 2011 Z06. I noticed an immediate smoother ride and much less noise in the car. Straight line acceleration is very similar even with the heads and cam mods. I am not easy on the car and drive aggressively when I take it out. I was considering a higher performance Michelin tire but am pleased with the All Season 4. How long they last is TBD.

Using these on california roads that are chewed up and spit out and they work great. No issues with it wobbling or moving or tracking wrong. Loving life with these. If I had worn struts, shocks, or bushings I would probably have issues on rough roads like other reviewer said. But probably just their car having suspension issues, no way it could be these tires Uneven cut up pavement, rough pavement, patchy road, cut up road, and partial gravel. All no issues so far, two weeks in. Cant wait for winter!

I am blown away by my new AS4s!!! I have a 2009 Chevrolet Cobalt SS. I drive spiritedly and daily drive my car. I came off of Toyo Extensa hp2s and let me just give it to Michelin.There is NO comparison. I have driven only 400miles on them but the All Season 4 is one great tire! They feel so smooth on the road and highway. I feel the grip and superb steering response driving compared to what I was driving on before. Road noise is minimal and actually very quiet from what I was used to. I am now a Michelin customer for life! Thank you Michelin for developing the best all season tire I have ever driven on.

I ordered new wheels for a Mercedes Metris van but the supplier noticed they were slightly damaged before shipping them. I ended up selecting a slightly wider wheel and noticed the Pilot Sport All Season 4 tires were available for this wider wheel. I bought them since I've run through a few sets on the Porsche and they were excellent. Now, do I need tires speed rated at 186 mph on a van - no - but for just a little more than a lesser tire I picked up some tires I feel confident with, especially with passengers. Ok, it's overkill but they looking freaking great!

I bought these for my charger scat pack. In a month they had 2 separations on the inside bead of the tire. First there was a vibration this is when we discovered the defect. Huge safety issue!! Then we replaced them. 4k miles another vibration and it was all 4 tires split on the inside of every tire. This could have caused a crash or even death for myself and my family!! Do Not buy!!!

I have purchased two separate sets of All Season 4 Tires for two of my higher performance vehicles. Being Audi's they are AWD and quite heavy, these cars are known for understeer and when pushed hard you can feel the car push. Softer walled tires really feel floaty on the road in aggressive driving. Not only do these tires perform exceptionally well in regards to grip (accelerating and decelerating) their lateral grip is most impressive. These tires allow my cars to handle like they are on rails, regardless of the temperature. Being AA for traction and A for temperature they do exceptionally well when dedicated summer tires become hard and dangerous.

I first owned the Michelin Pilot Sport AS3, then my tires wore down, so went to the Michelin Pilot Sport AS3+. Now I'm currently using the Michelin Pilot Sport AS4. From my very early and initial impression (under 50 miles), these tires are the best of the group thus far. I found the AS3 and AS3+ were almost identical in tread pattern, driving, comfort with a slightly higher noise level. The AS4 feels like a significant upgrade. Firstly its an entirely new tread pattern from the past 2 models. A variation of sipe thickness and patterns. It looks like it will grip better. Briefly driving on both dry and wet roads, highway and city, it delivered nicely. It already felt great with the AS3 and AS3+, so I'd expect the same with some refinement. Personally, where I really found an improvement is the noise and comfort level. This is deemed an ultra-high performance tire. Its sporty, athletic and low profile. The handing is expected to be superb and usually the tradeoff is comfort and noise. I don't know how Michelin did it, but I've found the noise level lower and the comfort level higher. It rides much more smooth and soft with less tire noise than the AS3+. My car handles even better and I feel confident with my rear wheel ride. The only concern I have is longevity and durability. Both AS3 and AS3+ were sticky tires, so they wore down quicker and sustained nail damage. I'm expecting the same with the AS4 as I believe the tire compound is the same or similar to the previous 2 models. Plus in the end, compromises are always a result of changes. I hope I'm wrong, but time will tell. Its already a superior tire and I've had a nice history of use. Michelin, if you could make a tire with added durability (less chance of nail, staple, debris causing tire damage), you'll have a true legend! In the meantime, well done on the AS4.

Bought these tires for the wife's car, she seems happy. Car had from the factory "run flat" tires on it. These are not run flats(thankfully). Car rides much nicer. She is happy. Draw back is now I have to get an extra wheel for a spare, which I would prefer anyway, remember tires do come apart sometimes, run flat or regular tire.

I've had a few good tires in my life, but nothing like the wow factor of this new design. The wet traction is outstanding. This tire inspires a lot of confidence. So much technology with the tread design and the compound. I'm not looking forward to the snow, but with this tire I feel that it will not be a problem. This might be the perfect tire for the Pacific Northwest. I live in Vancouver BC and we get lots of rain. My old set of P Zeros feel like crap in comparison to the Michelin AS4. My Mustang loves these tires !!! :)

I bought a set of pilot sport AS4 to put on my car and I absolutely love them the amount of control and response difference compared to the stock tires was unbelievable and as far as grip goes I have a hard time breaking loose when I try to do it on purpose