This is an initial review. Like all initial reviews, the first impression tends to be a comparison to the previous set of tires. At 4,000 miles, I replaced BMW's utterly incompetent choice of OEM all seasons: Goodyear LS 2 that were bastardized into a run-flat tire with a BMW spec tread compound. Turning a bottom-rated touring tire into a run flat tire yields exactly what you'd expect: a noisy, harsh ride, poor hydroplaning resistance, poor on-center stability, unresponsive steering, limited grip, numb road feel, and an expensive $400 tire.
These ExtremeContacts (245/40ZR19 XL) yielded an immediate improvement in all the areas where the Goodyears were lacking. This may be the perfect tire for a BMW five series because it provides very good performance without compromising luxury sedan comfort. I notice none of the squishiness reported by others from soft sidewalls. These are XL rated and that might have helped firm up the ride. They are very quiet, with a soft whir or hum at highway speeds that is entirely acceptable for an high performance tire and they are quieter than some touring tires that I've used, including the Goodyear run flats. Cornering and stability in dry and wet conditions are very good so far, but I haven't had to try them in snow or ice yet. The only place where they fall short is that they're not run flats, but I'm not losing any sleep about that.
I shouldn't have to pay for new tires on a new car (thanks for that, BMW), but I'm glad I made the decision and selected these Continentals. The fact that they were the least expensive option in that tire class didn't hurt either.