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Old 09-30-2009, 03:30 AM
Hogie's Avatar
Hogie Hogie is offline
It's 5 O'clock Somwhere
Location: Liv'n where I am
Join Date: Dec 2006
Posts: 652
Mein Auto: 330i, Z4 3.0, 535i
What are the RPMs that you are at when this happens? I am also wondering what would happen if you placed the tranny in sport mode at the same MPH or even go into manual mode at the same MPH using gear 3 and 4.

I am just wondering at that speed in auto mode ( assuming a Steptronic) if the car is searching for the next gear or previous gear, might be right on a threshold.

Try it with the A/C on and A/C off too ( changing engine load.)
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