Thread: F30 Rough Idle?
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      12-06-2012, 10:51 PM   #10
Private First Class

Drives: Waiting on 335i MG Sportline
Join Date: Apr 2012
Location: San Diego

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Originally Posted by Monkeycmonkeydo View Post
How many miles are you at? I have noticed a substantial increase in "butteriness" since I eclipsed 1200 miles. The ASS is smoother on and off and the idle is much less noticeable.

It may simply be the break-in period.
I concur, my 335, felt rough at idle and the start stop was very rough, felt the whole car shake on restart. I am now at 2700 miles and the engine is super smooth at idle and I barely notice the restart.