Tires OEM BMW or NANKANG

The Nankangs are good

Tested on a 2018 AMG GT R in Porsche Ring, Audru, Estonia. So far I'm liking the CRS more. Price is the same as Cup 2, but it's faster and doesn't seem to be worse on street.

We also have good experience with Nankang on smaller cars. I have not tried them on bigger cars yet. They are a bit more noisy than the Vitour tires, but the white stripe on them seems to hold up a little bit better. But there is still no problem keeping them white.

I have them ony C5. They're actually not bad even when not up to temp. I just don't push them hard until I build some heat. On the street they're AOK as long as youre not stupid.

I really like the CRS. Handles a bit more heat than most of the super 200 tires, but sticks way better than the endurance 200’s. Not good in the rain though.

The crs were a bit pricey and didnt last long but they’re noticeable higher grip

I will say the nankangs also suffer more in the rain (could be temp related too, but feels like they don’t evacuate water as well)

These are the Nankang CRS tires, saw similar wear pattern from the RT660s as well (in fact that kind of just chunked away leaving rings of cords).

As others mentioned, run-flats are more suspectable to sidewall damage. They're also heavier and noisier. Also, you may have a wider selection of tires if you go with non-runflat.

I got the wheel and tire warranty when I bought my car. They’ve already replaced 4 run flats for free. I got 2 blowouts in the last 2 weeks hitting pretty average sized potholes that I’ve never had issues before with. Run flats suck.