Best Tyres for the BMW E91 325i

I am not driving that spirited, especially on winter tyres - thus take my grip specifics with a grain of salt. In the grip category i don't see reason to complain. Sometimes i am in the mood to take an on-ramp near the limit of grip - behaviour here seems normal to me, the car tends to understeer. The previous winter tyres i bought the car with were 8 year old Marangoni Meteo HP and those sometimes tended to oversteer and had quite bad wet grip, so i replaced them with these. After one winter season the front tyres are severely more worn than the rears, i dont expect more than two seasons, so ca. 20000km out of these. On the inside of the car the tyre sounds fairly loud with a repeating growling which feels a bit like a outgoing wheelbearing is described. My eagle f1 asymmetric 5 summer tyres are far better in noise and comfort, which is important to me. The tyres performed very well in the heavy snow we had this year. My car is lowered a bit and even with loose snow around the 10 cm mark i didn't get stuck while having a short donut session in a parking lot. I suspect with the immense wear now on the rear tyres i would have more trouble in a similar situation. All in all i do not like these tyres a lot but they are not horrible - for my next set of tyres i will try another model in hopes of improving wear and noise.

I have installed two new tyres at the front side for one week.Everything feels similar compared to the Pirelli P-Zero which is at the rear side. One thing that I am surprised is the tyre depth is only 6mm when new! I am not sure how long they will last.

I used these tyres last winter and now they are put on my car again. On snow they drive very well. On ice ABS & ESP may flash, but it is still OK. On dry and above freezing temperature, their braking distance is longer than the 17 inch summer tyres.

As compared to the summer run flat tyres, they are much softer, silent and comfortable. The steering wheel is much lighter. The tyre wear is negligible too. If the summer run flat tyres are half as good, I believe that much more people will stay with run flat tyres instead of going to "normal" tyres.

This tyre lies in the front of my car, wears very unevenly and generates terribly loud noise. It has rim protection that didn't fully stop my whe els from kissing the curb. It is very old tyres design, even its successor CSC3 is being replaced by CSC5. So luckily I don't have to buy this tyre again.

Positive: they wear evenly as compared to other run flat tyres I used (Michelin Pilot Primacy ZP, Continental Sport Contact 2 SSR), thus generating less noise due to the irregular wear. The grip on dry and wet is excellent, the braking distance is short. They are also slightly cheaper ("only" Euro 200 each before installation).
Negative: they are hard as other run flat tyres. I check tyre pressure once each month, but they still wear out fast. After 6000km easy going driving on mostly highways, half of the tyre depth is gone. The tyres may last around 12000km in total, which are expensive for the price.
At this tyre size, there are not many run flat tyre choices. At least these tyres have much newer technology and have better reviews compared to others (Bridgestone RE050A run flat and Continental sport contact 2 SSR). Sometimes I am thinking of replacing them with normal tyres, but it doesn't seem safe and interesting to use either spare wheels or tyre sealant on the highway shoulder especially in dark. So probably I will stay with these tyres.