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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Dec-16-2019, 09:40:54 PM   #1
lemoose
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Default slight pull to the left under acceleration

to start things off, yes, my alignment has been done and the "issue" persists. I think what I'm noticing may be inherent to the design of the LSD in our cars, but I'd like to confirm. Under moderately hard acceleration (DSC off), I can feel the car pull to the left as rear tires are at their limit of traction. With the traction control on however, I can feel the car brake one of the rear wheels and keep the car straight.

anyone else notice anything similar?
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Old Mon, Dec-16-2019, 09:49:52 PM   #2
heinzboehmer
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Default Re: slight pull to the left under acceleration

How are all your rear bushings? Especially RTAB. Also how old is your suspension?
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Old Mon, Dec-16-2019, 09:51:20 PM   #3
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Default Re: slight pull to the left under acceleration

This only happens if I hoon in the snow. Whenever I throttle enough to break traction the vehicle wants to point itself into oncoming. The ///M just loves to make you feel alive with puckering thrills. lol.

But if itís dry or wet, I donít really feel it unless I fully launch and get tires spinning. Then the right side will first push as the vehicle pivots then the left side hooks up once the LSD fully locks up.
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Old Mon, Dec-16-2019, 10:09:22 PM   #4
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Default Re: slight pull to the left under acceleration

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Originally Posted by heinzboehmer View Post
How are all your rear bushings? Especially RTAB. Also how old is your suspension?
This. I'd look at this first.
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Old Mon, Dec-16-2019, 10:10:18 PM   #5
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Default Re: slight pull to the left under acceleration

RTABs would be my first guess. Also seen this happen when one of the rear tires had a bad cord.
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Old Tue, Dec-17-2019, 02:03:16 AM   #6
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Default Re: slight pull to the left under acceleration

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Originally Posted by rovert604 View Post
This only happens if I hoon in the snow. Whenever I throttle enough to break traction the vehicle wants to point itself into oncoming. The ///M just loves to make you feel alive with puckering thrills. lol.

But if itís dry or wet, I donít really feel it unless I fully launch and get tires spinning. Then the right side will first push as the vehicle pivots then the left side hooks up once the LSD fully locks up.


This is exactly what im feeling. I feel like the diff is sending more power to the right side or the left tire is slipping, then i feel the diff lock up and distribute the power evenly. Almost as if it takes the diff a split second to ďsenseĒ slip and lock.

I got my RTABs (and all rear end busgings) done less than two years ago and tires have less than 2k miles on them


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Old Tue, Dec-17-2019, 02:32:09 AM   #7
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Default Re: slight pull to the left under acceleration

How are the rear camber arms? Mine were flexing really bad making the alignment almost impossible. I switched out to some SPC ones and the movement went away. However, I did do the subframe and diff bushings while swapping those.
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Old Tue, Dec-17-2019, 02:51:55 AM   #8
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Default Re: slight pull to the left under acceleration

Either your RTABs are shot again, or someone cheated your alignment
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Old Tue, Dec-17-2019, 02:54:55 AM   #9
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Default Re: slight pull to the left under acceleration

Yeah something is up with OPís car. Traction control does not have to intervene when I come away from any stop, hard and WOT. Mine is more of a playful nudge that is very easy to control.
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Old Tue, Dec-17-2019, 03:07:14 AM   #10
lemoose
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Default slight pull to the left under acceleration

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Originally Posted by rovert604 View Post
Yeah something is up with OPís car. Traction control does not have to intervene when I come away from any stop, hard and WOT. Mine is more of a playful nudge that is very easy to control.


Its completely controllable it hardly nudges me half lane if i dont counter it. I did get my alignment looked at a second time but they even gave me the printout from the hunter machine showing everything within tolerance. Not ruling anything out, but i would find it rather unlikely.


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Last edited by lemoose; Tue, Dec-17-2019 at 03:14:54 AM.
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Discussing slight pull to the left under acceleration in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)