Like in all subjective scores, these are relative to the other tires I used on the same car. These were cheap Winter tires (for one Winter) and UHC All-Season Hankook Kinergy 4S. Please also note that my Michelin Primergy 4 are OEM tires for an EV, so they might be different from the retail version of the same model.
Michelin Primergy 4 loses in every category to Hankook Kinergy 4S:

Wet roads: Michelin start to skid unpredictably with quite sudden and nasty understeer and the tire doesn't react to weight transfer when you slow down a bit to load front tires for more grip - the car just keeps sliding until the speed reduces enough. Hankooks feel way more safe in same situations and way more manageable and react to corrections just nicely.

Dry roads: Michelins start to slide quite early (earlier than Hankooks) on a heavy Hyundai IONIQ 5, but are very predictable and forgiving and once they start squealing they are still driveable and react to the steering.

Hot dry roads: I'd expect a Summer tire not to overheat on a hot sunny day, but hey... It is normal when all-season Hankooks start sliding more and become mushy at temperatures around 25-27 C and by 30 C they drop quite noticeably. But Michelins start to slide more at above 30 C, which is surprising. I'd expect a Summer tire to hold to at least 35 C. Of course, the road is way hotter under the Summer Sun. however my next Summer tire will definitely be something that can stand the heat better.

The vehicle skids very badly.

At 16 inch, difference between budget and premium is around 20 Euro. Why risk your safety and comfort and not buy Michelin or Conti? For me Primacy 4 was a reliable, silent partner that I would for sure buy again.
I am now going for a 19 Inch and feel like the 100 eur difference between medium and premium or 200 eur between budget and premium manufacturer makes the choice a lot harder.
Oh and I couldn't select Skoda Superb 2012 and I chose equivalent.

Complete set installed in April 2024. For now, they feel much quieter and more comfortable than the dunlop sp050. We see how it behaves over time.

Have tried other makes but have not found anything to match Michelin for reliability, performance, safety and longevity.
Best and only tires on the market for me personally.

No problems at all. Excellent.

Always used Pilot Sport 4 tires front and rear for summer and CrossClimate for winter.
Tested the Primacy 4 AO 93Y dot2019 that summer for a week on the road and a track day, but did not like the lack of grip when the tires heated up.
Now I'm using them as the rear tires on my rear driven car and together with the PS4 at the front they give fun (predictable drifts) on twisty roads, a secure feeling in the rain and the are so much more quiet and comfortable.
Maybe I'm just getting old (and sensible) ....

Primacy 4 2S came with the new car. Useless on water, noisy as heck. Will not buy again.

Terribly disappointed by these Michelins. A-class rolling resistance tires demonstrating fully the challenge of low rolling resistance designs. Rut sensitivity so bad it’s basically dangerous. Very poor comfort as well due to excessive shake. Steering is delayed and non-linear. Plan to replace next summer after only one season.

This is a review comparing it to the summer tire Michelin Energy Saver that I used last time.
The vehicle installed is a late 2011 Toyota Wish 1.8S with a current mileage of approximately 270,000 km. The average annual mileage is approximately 22,000km, including 14,000km on summer tires.
Due to the snowy terrain, we used three types of tires: summer, all-weather, and studless. After use, they are cleaned, maintained, covered, and stored in a tire stocker in the garage.
In the summer (no snow season), it's summer tires ➔ In early winter (snowfall season - before the snow compaction road), it's all weather ➔ In the middle of winter (snow compaction road - icy road), it's studless ➔ In early spring (ice melting road - before the end of snowfall), it's open Ruler Weather➔In the summer Samataiya

Dry and wet grip: I felt that the grip of the Energy Saver had decreased after 40,000 km, but I felt that the grip of Primacy 4 was almost the same after 40,000 km as when I first started using it.
Tire wear rate: The mileage at which the slip sign appeared was 50,000 km for the Energy Saver and 55,000 km for the Primacy 4, which is 10% better.
Comfort: I felt that the Primacy 4 was superior in terms of comfort at the time of purchase, but after driving 50,000 km, I felt that both cars were noisy. Comfort seems to decrease in proportion to driving distance.
Repurchase: Currently, the plan is to repurchase Premacy 4 again. The reason is that the initial grip performance does not change for a long time, and it has high wear resistance and long life.

In the dry the Primacy 4's been excellent. Grip feels almost infinite, to the point where I find it hard to use all of it on public roads. In terms of comfort, it's a quiet, pleasant tire to cruise with. At highway speeds up to 180 km/h I can't really find any fault with the tire. It's relatively quiet and absorbs enough of the road to almost feel like driving on a cloud.
In the wet the grip is still above average, much better than my current winter tire (Vredestein Wintrac Pro in the same tire size). Comfort and noise levels are in check, although it's harder to judge noise with all the extra noises introduced by the water on the road.
One thing I sometimes miss is communication during turn in and feedback from the road. I guess this could be party because of the relatively meaty sidewall but to me it was noticeable enough to point it out.
Regardless of that downside, overall a great tire that suits the characteristics of a 5 series well.

Michelin primacy 4, with 360 treadwear rating can reach 50,000km/ 5 yrs. Pass that and it start to have crack lines on its sidewalls and remaining soft treads starts to peel. Its rubber compound doesn't stand well in the tropical weather. At least till the above mentioned points. Quite good mileage, but other reputable brands also last till 50,000km too but they do not peel like this model.

A comfortable ride up to maybe the 4th year. Very good grip as well.

Sidewall looks good after years, does not sag, maintains its sporty low profile look. Cheaper ones sag the moment you fit them in. Gives you the under inflate look despite the correct psi. Primacy 4 does not sag.