yeah that’s one of those things that miff me about the car. I get the load capacity but still kind of silly in a modern car. Also no rear vents, why makes nonsense. Still don’t plan to have all 3 kids and a wife in the car at one time. Thanks for pointing that out tho.
You can swap the back seats with A-Spec to get the extra seat. I have seen many, including people in this forum, that have done it. So there is option if you want,
I wouldn't risk it.
Yes, agree there is a risk with this option.
That's certainly a very real and viable concern!
Agreed, you could certainly "do it the right way" and technically make it identical and safe.
) so it's a personal decision. I'm just here to point out the seriousness of legal ramifications surrounding safety. 
Confusion around this topic is right! When I perform this exercise the revs drop immediately, as one would expect, at least anyone who has been driving manual transmissions for 60 years. And there is no evidence of rev hang when upshifting. I have no idea why these cars are not consistent in this regard, and my guess is that the dealership folks would be no help. My mechanic was with Honda for 20 years before starting his own business, so I'll ask his opinion. If I get a meaningful answer, I'll post it.
My sentiments exactly. My most recent cars were an M550, two M5s, an M4cs and an M2cs, oh and a 335is.
I contacted my mechanic about the rev hang issue, but unfortunately, he was no help. He thinks that it might be related to the rev matching feature. I don't believe that is the case. If it were, there would not be cars like mine, in which the rev matching works fine on downshifts, but there is no rev hang issue on upshifts. So, the mystery remains.
This and this. I've been twice and will go again at the end of October with a friend. The BMW Performance Center is a must-attend if you're an automotive enthusiast. It's an incredible opportunity to get behind the wheel of late model M cars on track in a safe and controlled environment. The driving experiences are exceptional, facilities are good, and it's semi accessible with two campuses (Thermal, CA, and Spartanburg, SC), and the price point isn't unreasonably high.
Nuts - I was looking forward to your reply, with hope of learning more via your ex-Honda mechanic. In my case (and as reported by others), the rev-hang / over-rev issue on up-shifts is not NOT affected by the car's setting for "rev-match" on downshifts.
You're right, from all reports, the rev match feature is not related to the issue of rev overhang. Fortunately, mine doesn't do it with or without rev matching engaged. And this continues to puzzle me. Why would the tuning not be the same in all cars? I can imagine a scenario in which very different gasoline formulations could change the volume of unburned post combustion particles, and perhaps activating a rev overhang feature. But I can't imagine such a widespread difference affecting so many people. My concern is that at some point the dealer might need to perform an "update" that brings this on in my car.
