Unstable rear end when shifting while turning

M3MATT · 12-09-2023, 12:32 PM

My e92 m3 (DCT) feels like the rear subframe is moving when I up shift while Turning. The rear end feels super unstable during shifts while I’m turning.

The whole car has solid/spherical bushings in every point so I’m not sure what it could be.

I’m thinking it might be trans mounts since that’s the only stock rubber part of the car.

Has anyone had this issue before?

M3SQRD · 12-09-2023, 01:47 PM

I’ve had zero rear end issues will shifting mid corner. I’m running 275/295 F/R street tires and have had zero issues when intentionally not trying to drift mid corner with DCT set to six

Redd · 12-09-2023, 06:10 PM

Try it with DCT shift speed set to 2 or 3. This will let you know if the higher shift speeds are unsettling the rear end.

Yes it might be that you're feeling the rear diff moving due to the rubber bushes, but that doesn't mean the rear end is losing grip.

Also having a full spherical rear end provides a ton of feedback. You feel everything. So it might just be the initial feelings of lateral movement but you're not losing grip yet.

e46e92love · 12-10-2023, 08:22 PM

Aluminum subframe bushings. Problem solved😁

e46e92

M3MATT · 12-10-2023, 08:28 PM

Quote:

Originally Posted by e46e92love

Aluminum subframe bushings. Problem solved😁

e46e92

I have those already. Whole cars solid or spherical

12-09-2023, 12:32 PM	#1
M3MATT Private First Class 91 Rep 138 Posts Drives: E92 M3 Join Date: Jul 2023 Location: Ct iTrader: (0) Garage List 2012 E92 M3 ZCP [10.00]	Unstable rear end when shifting while turning My e92 m3 (DCT) feels like the rear subframe is moving when I up shift while Turning. The rear end feels super unstable during shifts while I’m turning. The whole car has solid/spherical bushings in every point so I’m not sure what it could be. I’m thinking it might be trans mounts since that’s the only stock rubber part of the car. Has anyone had this issue before?
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12-09-2023, 01:47 PM	#2
M3SQRD Major General 2227 Rep 5,667 Posts Drives: E92 M3,G20 330ix,F22 240iX,F82 Join Date: Jun 2009 Location: Mid-Atlantic iTrader: (11)	I’ve had zero rear end issues will shifting mid corner. I’m running 275/295 F/R street tires and have had zero issues when intentionally not trying to drift mid corner with DCT set to six
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12-09-2023, 06:10 PM	#3
Redd Brigadier General 3907 Rep 4,172 Posts Drives: 2010 BMW E92 M3 Dakar Edition Join Date: Jul 2015 Location: Malaysia iTrader: (0)	Try it with DCT shift speed set to 2 or 3. This will let you know if the higher shift speeds are unsettling the rear end. Yes it might be that you're feeling the rear diff moving due to the rubber bushes, but that doesn't mean the rear end is losing grip. Also having a full spherical rear end provides a ton of feedback. You feel everything. So it might just be the initial feelings of lateral movement but you're not losing grip yet.
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12-10-2023, 08:22 PM	#4
e46e92love Brigadier General 236 Rep 3,303 Posts Drives: e92 ///M3; X3 (wife's) Join Date: Nov 2007 Location: The East Side of Things iTrader: (0)	Aluminum subframe bushings. Problem solved😁 e46e92 __________________ "...it's not about the money and not about the brand of the car, it's about handling,performance and passion......And that, no other car has all together like an M3........when you talk about the most complete car the M is invincible." --Tony Kanaan.
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