Well break in is complete. Well sorta. I did the break in service at 1200 miles for oil change and diff change. Now the manual says only to do up to 155mph for short periods such as passing until 3100 miles.
I've definitely kept by the book.
This X3M has absolutely blown me away. I figured I'd love the drive train and tolerate the rest of the vehicle, but I've actually been floored by how much I love it.
Driving it around with everything in normal, it just feels like a normal SUV with a stiffer ride. My wife has been commuting daily with it without issues. Press the preset M1 and M2 buttons and this thing is just a beast everywhere. It's a beast on the highway, it's a beast on the backroads. I can see myself getting into tons of trouble with this thing. It's just goes from so civil to Savage with the press of a button.
I've had time to consider the ride. I will say it's definitely firm. The springs I'd say are stiffer than the blackwing, but the damper is softer on the comfort setting than the softest setting on the blackwing. The vehicle will get a bit bouncy on comfort.
I think magazines tend to feed off each other's impressions on things like ride and steering feel. My wife needed a C section just recently to deliver our daughter. The take home vehicle was the X3M (too much stuff for Blackwing). The next day we had to make another trip and we took the blackwing because I told her the softer ride will be better on her belly. She told me flat out there is absolutely no difference in ride comfort between the two. It's something I've felt secretly for some time but figured all the magazines cannot be wrong. She's never read a car magazine, just spent time in both vehicles and told it like it is.
Anyway the blackwing will clear break in soon so it will be a better comparison but currently I can't help but wonder of a G80 M3 comp xdrive would have been a better choice for my car.