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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > DTC question



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      04-07-2018, 02:38 PM   #1
Pshem87
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DTC question

Hi Guys,

As winter ended I can test my car and I have small question to you.
When I'm accelerating very hard (all systems on) and car is starting to loose traction I'm hearing noise on the rear wheels, meaning very loud something like wheels bumping up and down... It's normal when system start to do work? I noticed it on 2nd gear on hi speed and hi rpms...

Engine n54, runflat tires, suspension is checked and in good condition.
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      04-07-2018, 03:21 PM   #2
SnapCoupe
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Quote:
Originally Posted by Pshem87 View Post
Hi Guys,

As winter ended I can test my car and I have small question to you.
When I'm accelerating very hard (all systems on) and car is starting to loose traction I'm hearing noise on the rear wheels, meaning very loud something like wheels bumping up and down... It's normal when system start to do work? I noticed it on 2nd gear on hi speed and hi rpms...

Engine n54, runflat tires, suspension is checked and in good condition.
Yes, that is normal. I wouldn't consider it necessarily "loud" when it happens, but when the engine power is cut and the brakes engage with the DTC and DSC, it is pretty noticeable.
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