[choppedliver]

I just took my 2020 M550i with 1000miles and a full tank and did 2 very and quick brake boost launches with dragy. There is a slight pause once I release the brake and I was in sports+ and traction off.

I’m in Australia and numbers are (not sure how to add a screenshot).

21c
DA 532m
3.37% slope
0-100 4.22s
0-50 1.78s - 30mph is 48kmh
0-80 3.08s - equivalent to 50mph

I’m not using LC but that’s a fair bit off the claimed 3.8 but I’m guessing LC, less slope should do better.

So those numbers are better than the OP with time lost at launch and the increasing slope. My previous run had it at 4.4% on the same stretch as it’s not a consistent slope.

I’d agree the OP is losing time at the launch. The time between my 30mph and 50mph is 1.3secs which is similar.

I wonder if cold weather means it’s spinning and you can’t feel it?

Byron