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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Mon, Feb-22-2016, 03:46:32 AM   #1
M3Stang
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Default E36 M3 rear end feels "loose"

Hey guys when cornering my M3 feels so nice and tight in the front but the rear tends to not feel as connected if that makes sense and the car may suddenly want to oversteer its not gradual. I had mis matched tires on it from the previous owner so I just replaced all of them with brand new Pilot Super Sports. Stock sizes on contours. Still sort of feel it although it feels better (or I'm just not pushing it as hard). I have had the car for about 7 months and put about 3k miles on it as it is my "fun" car. I DD an E36 328is so thats my normal car and the M3 comes out to meets or just fun drives or whatever. My M3 has the following mods installed from the PO. I haven't modded it at all with the exception of the new tires.
ST XTA coilovers
X brace
AKG RTABS and FCABS
AKG RSM
Unknown brand front sway bar, silver in color
OEM rear sway bar.
Unknown alignment specs

Like I said the car drives great and if I'm not pushing it hard it will pull through turns nicely but it feels weird because there is 0 body roll. Again the front feels like it pulls through corners nice but the rear has like a lagging feeling. I haven't felt the oversteer feeling again since the new tires were put on about 30 miles ago. The car had Pilot Sport in the front and Michelin Pilot Sport A/S 3? in the rear before the PSS. Any ideas? Thanks guys!
Edit: My car is the yellow one that this posting is about on bimmerforums so you can get a better idea of its history. This is from the PO doing all of the mods. http://www.bimmerforums.com/forum/sh...oration-Thread
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Old Mon, Feb-22-2016, 04:12:34 AM   #2
matthugie
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Default Re: E36 M3 rear end feels "loose"

My first thought would be alignment, specifically rear toe. If it's out of spec it can cause a weird feeling, and especially if it doesn't match side to side you can get some really strange handling characteristics. Get that checked first.
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Old Mon, Feb-22-2016, 04:37:23 AM   #3
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Default Re: E36 M3 rear end feels "loose"

Have you checked your rear shock towers?
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Old Mon, Feb-22-2016, 11:12:47 AM   #4
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Default Re: E36 M3 rear end feels "loose"

I'm thinking it may be the alignment. The PO gave me all the receipts to everything and the alignment is one of them done in November of 14. He told me he doesn't remember what the specs are. I still keep in touch with him as he is part of one of my local groups. I am assuming they were set to stock alignment setup but who knows? I just hate alignments. Someone I don't know or trust works on my car and I have to watch them like a hawk the whole time. I could just bring the car in for a free alignment check and see if it's not where I would want it. And the shock towers are great. Have reinforcement plates and everything.
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Old Mon, Feb-22-2016, 01:46:57 PM   #5
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Default Re: E36 M3 rear end feels "loose"

My first thought was rear trailing arm bushings as mine felt loose when they were worn. But the PO replaced them. I would check the RTAB pocket as they do crack.
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Old Mon, Feb-22-2016, 02:00:29 PM   #6
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Default Re: E36 M3 rear end feels "loose"

RTAB's. Loose or failing is my bet..
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Old Mon, Feb-22-2016, 03:44:54 PM   #7
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Default Re: E36 M3 rear end feels "loose"

Yep, I'd go with RTAB inspection first...bad RTAB or RTAB pocket creates a very 'dynamic alignment'.
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Old Mon, Feb-22-2016, 04:06:28 PM   #8
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Default Re: E36 M3 rear end feels "loose"

AKG bushings don't really go bad unless they have a shit ton of miles on them. I'd definitely check the pockets though and make sure they're reinforced as the AKG bushings put even more stress on the pocket.

My bet is alignment. Your rear toe is probably way out of whack
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Old Mon, Feb-22-2016, 10:01:59 PM   #9
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Default Re: E36 M3 rear end feels "loose"

When I read or hear the term loose, I first look at the brand/age/condition of the tires. Often times this was the issue. Any more info on the tires might at least help eliminate other parts.
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Old Tue, Feb-23-2016, 04:09:10 AM   #10
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Default Re: E36 M3 rear end feels "loose"

The above and rear ball joints? How many miles? They wear and a little wear top and bottom will cause camber changes in cornering.

You can do your own alignments. I got a track ace laser for toe and it's awesome. Paid about 130 I think. Very easy car to align.

http://www.trackace.co.uk
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Discussing E36 M3 rear end feels "loose" in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)