Just noticed this last week. My 2015 F55 38,500 miles, with auto trans is shuddering when changing gears, at moderate throttle. It is more noticeable in sport mode. Anyone else notice this as well? I just had it in for service not too long ago and they did a software update. Wondering if the latest update caused the shifting to change.

 

I've read in other threads that the shudder could be rear engine mount. Can't recall the threads ATM though.

 

Shudder?
Or do you feel the waste gate dumping pressure during shifts causing it to feel rough??

 

This.....I am at the dealer for a leaking engine mount as we speak. The engine moves a lot and can be felt during shifts. The only reason they are repairing it is because I broight it up. Its not something they normally inspect.