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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
80 mph or higher, a slight left curve makes the whole car shake and make a noise like it has gone off on the shoulder and hit the rumble strip - but the highway is smooth.
If I floor it in first gear, there will be a brief 1-second bout of the same noise. It feels and sounds rather as though the antilock brakes were engaging, except the car is not slowing down, it is accelerating hard.
I disengaged the ASC and tried the low gear acceleration - no change.
The sound and frequency of the vibration makes me want to focus on the antilock brake system, but that should not engage unless the brake is pressed, right? I have no warning lights lit.