E92 Loose Rear End

E92Vancouver · 09-12-2010, 11:48 PM

I have the E92 coupe with the sports package with the 18 inch tires and 255/35's on the rear.

I notice when the road is uneven and bumpy, the rear end feels like it wants to slide out. This is noticeable if I drive only one side of the car (say the right side) over a manhole cover that is maybe recessed an inch (i.e. 25 mm for you Europeans).

Anybody else notice this? I have had the car since new (2007) and it only has 18,000 miles so it can't be shocks or bushings.

This is more noticeable when it is wet out.

WWONG · 09-13-2010, 12:01 AM

This is why we can't have nice things. And by nice things, I mean LSDs.

E92Vancouver · 09-13-2010, 12:04 AM

Quote:

Originally Posted by WWONG

This is why we can't have nice things. And by nice things, I mean LSDs.

What are LSD's?

WWONG · 09-13-2010, 12:11 AM

Limited Slip Differential

badass335 · 09-13-2010, 01:40 AM

LSD does shit for you with what the OP is describing. Trust me, i have LSD and it doesn't help. Hell, i have ohlin coliovers, swift springs, m3 bushings, m3 control arms and then some.
Also, OP, i have a 2007 335 and i had the same feeling. Hence why i upgraded all the components. I still don't feeling 100% steady.

zaheer · 09-13-2010, 06:18 AM

Ok coming from my previous E90 that had LSD, to my current 335, I can say LSD does make a dfiference.. but however I was also noticing slidding out when i bought my 335 esp when going over a drain cover or anything slippery on the road.

I didnt believe it was due to not having LSD as every other cay without LSD never slips like mine did. Anyway long story short... IT was my tyres, they were wearing out, as soon as I changed them to new ones..problem solved.

mine also had 18k on the clock when it was doing that.

Hope this helps

E92Vancouver · 09-13-2010, 03:19 PM

Thanks guys. I have talked to a poster on another forum who had this same problem and it is due to tires.

My rear tires are cupped on the inside and need replacing. The Bimmer has a lot of camber, so the inside of the tire is the main point of contact.

The poster I talked to said the problem went away as soon as he changed the tires.

It is a little uncomforting because the rear end wants to kick out if one wheel is going over something slippery at any speed above 30 miles an hour.

E92Vancouver · 09-13-2010, 03:19 PM

Quote:

Originally Posted by zaheer

Ok coming from my previous E90 that had LSD, to my current 335, I can say LSD does make a dfiference.. but however I was also noticing slidding out when i bought my 335 esp when going over a drain cover or anything slippery on the road.

I didnt believe it was due to not having LSD as every other cay without LSD never slips like mine did. Anyway long story short... IT was my tyres, they were wearing out, as soon as I changed them to new ones..problem solved.

mine also had 18k on the clock when it was doing that.

Hope this helps

Bingo! My rear tires need replacing soon.

marcel b · 09-13-2010, 03:23 PM

change to non-runflat, helps as well. the hard side wall of the rft make it bouncy. a non-rft can absorb bumps much better.

E92Vancouver · 09-13-2010, 03:27 PM

Quote:

Originally Posted by marcel b

change to non-runflat, helps as well. the hard side wall of the rft make it bouncy. a non-rft can absorb bumps much better.

Yes, I have run flats but don't want to switch because I don't have a spare tire.

Alexander · 09-13-2010, 03:28 PM

Hahah this thread. Read through my argument in the Audi thread.

E92Vancouver · 09-13-2010, 03:33 PM

Quote:

Originally Posted by Aonarch

Hahah this thread. Read through my argument in the Audi thread.

Do you have a link?

G335IM · 09-14-2010, 12:13 PM

Yes, loose due to horrible runflat tires! They really make the handling suck.

tibra1 · 09-24-2010, 02:08 AM

Quote:

Originally Posted by marcel b

change to non-runflat, helps as well. the hard side wall of the rft make it bouncy. a non-rft can absorb bumps much better.

+1 I swapped out my 18inch RFTs for 19" Falkens Fk452s non-RFT and what a difference...Also RFTs are super super heavy..I shed at least 40 pounds going from RFT to non-RFT and the ride is better on 19s non-RFT then w 18s RFT.

techlogik · 09-24-2010, 06:38 AM

It has nothing to do with LSD.

It has everything to do with the RTABs, Subframe bushing, and such.

The installability of this car compared to my stock 2003 M3 I had is appalling.

techlogik · 09-24-2010, 06:40 AM

Quote:

Originally Posted by Aonarch

Hahah this thread. Read through my argument in the Audi thread.

Were you arguing that AWD has some type of superior road handling and doesn't tramline, swerve all over the road with changes in the surface?

Pongdadong · 09-24-2010, 07:39 AM

Rear Control Arm? This happened to my EVO VIII

tibra1 · 09-29-2010, 09:13 PM

Quote:

Originally Posted by techlogik

It has nothing to do with LSD.

It has everything to do with the RTABs, Subframe bushing, and such.

The installability of this car compared to my stock 2003 M3 I had is appalling.

I totally agree the stock suspension on the 335i is total shit..I am upgrading my entire suspension w all the M3 control arms, sways, subframe bushings and proper coilovers w linear springs..and I am also running an LSD..honestly I wouldnt even think of putting an LSD in this car without addressing all the other stock suspension issues.

Once you do these upgrades u can then align the car properly..I get the same feeling of instability and being all over the road too..The 335i is not meant to be a true track car like the M3..its built w comfort in mind which sucks for guys who wanna push its limits.

09-12-2010, 11:48 PM	#1
E92Vancouver First Lieutenant 33 Rep 319 Posts Drives: 2000 E46 & 2007 E92 328 Join Date: Jun 2007 Location: Vancouver iTrader: (0)	E92 Loose Rear End I have the E92 coupe with the sports package with the 18 inch tires and 255/35's on the rear. I notice when the road is uneven and bumpy, the rear end feels like it wants to slide out. This is noticeable if I drive only one side of the car (say the right side) over a manhole cover that is maybe recessed an inch (i.e. 25 mm for you Europeans). Anybody else notice this? I have had the car since new (2007) and it only has 18,000 miles so it can't be shocks or bushings. This is more noticeable when it is wet out.
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09-13-2010, 12:01 AM	#2
WWONG Banned 109 Rep 1,830 Posts Drives: 2012 BMW X5 xDrive35d Join Date: May 2010 Location: Houston, TX iTrader: (14)	This is why we can't have nice things. And by nice things, I mean LSDs.
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09-13-2010, 12:11 AM	#4
WWONG Banned 109 Rep 1,830 Posts Drives: 2012 BMW X5 xDrive35d Join Date: May 2010 Location: Houston, TX iTrader: (14)	Limited Slip Differential
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09-13-2010, 01:40 AM	#5
badass335 Lieutenant Colonel 109 Rep 1,948 Posts Drives: 2017 540i Xdrive Join Date: Jul 2007 Location: Surrey, BC iTrader: (10)	LSD does shit for you with what the OP is describing. Trust me, i have LSD and it doesn't help. Hell, i have ohlin coliovers, swift springs, m3 bushings, m3 control arms and then some. Also, OP, i have a 2007 335 and i had the same feeling. Hence why i upgraded all the components. I still don't feeling 100% steady.
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09-13-2010, 06:18 AM	#6
zaheer Captain 83 Rep 861 Posts Drives: E93 335i Join Date: Nov 2009 Location: London, UK iTrader: (1)	Ok coming from my previous E90 that had LSD, to my current 335, I can say LSD does make a dfiference.. but however I was also noticing slidding out when i bought my 335 esp when going over a drain cover or anything slippery on the road. I didnt believe it was due to not having LSD as every other cay without LSD never slips like mine did. Anyway long story short... IT was my tyres, they were wearing out, as soon as I changed them to new ones..problem solved. mine also had 18k on the clock when it was doing that. Hope this helps __________________
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09-13-2010, 03:19 PM	#7
E92Vancouver First Lieutenant 33 Rep 319 Posts Drives: 2000 E46 & 2007 E92 328 Join Date: Jun 2007 Location: Vancouver iTrader: (0)	Thanks guys. I have talked to a poster on another forum who had this same problem and it is due to tires. My rear tires are cupped on the inside and need replacing. The Bimmer has a lot of camber, so the inside of the tire is the main point of contact. The poster I talked to said the problem went away as soon as he changed the tires. It is a little uncomforting because the rear end wants to kick out if one wheel is going over something slippery at any speed above 30 miles an hour.
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09-13-2010, 03:23 PM	#9
marcel b Lieutenant Colonel 132 Rep 1,898 Posts Drives: F31 340i Join Date: Jun 2009 Location: Europe iTrader: (0)	change to non-runflat, helps as well. the hard side wall of the rft make it bouncy. a non-rft can absorb bumps much better.
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09-13-2010, 03:28 PM	#11
Alexander Mad tyte EuR0 style boooi <--- Joke 212 Rep 2,472 Posts Drives: E30, E85, MKVI Join Date: Nov 2009 Location: Deal's Gap iTrader: (0)	Hahah this thread. Read through my argument in the Audi thread.
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09-14-2010, 12:13 PM	#13
G335IM New Member 0 Rep 8 Posts Drives: 335i M sport Join Date: May 2010 Location: Johannesburg South Africa iTrader: (0)	Yes, loose due to horrible runflat tires! They really make the handling suck.
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09-24-2010, 06:38 AM	#15
techlogik Lieutenant Colonel 70 Rep 1,565 Posts Drives: 2020 M340i Dravit Grey Join Date: Dec 2006 Location: FL iTrader: (2)	It has nothing to do with LSD. It has everything to do with the RTABs, Subframe bushing, and such. The installability of this car compared to my stock 2003 M3 I had is appalling. __________________ 2020 M340i: Dravit Grey Mettalic. Loaded.
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09-24-2010, 07:39 AM	#17
Pongdadong Private First Class 4 Rep 107 Posts Drives: 07 BMW 328XI (e92) Join Date: Mar 2010 Location: Kansas iTrader: (0)	Rear Control Arm? This happened to my EVO VIII __________________ 2007 E92 328xi: Jet Black/ Black/ Aluminum\|6MT/\|Active Cruise\|Xenons\|Bluetooth\|IPod\| Chuck Norris once kicked a horse in the chin. Its descendants are now known as giraffes.
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