E90Post
 


TireRack
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Cobb, Camber, and Continentals...



Reply
 
Thread Tools Search this Thread
      02-25-2012, 08:01 PM   #1
HollowPoints
Private
1

 
Drives: 2007 335i
Join Date: Nov 2010
Location: CT


Posts: 60
iTrader: (0)

Cobb, Camber, and Continentals...

Took my car in for service, and once on the lift I see this:


My Contis are done, about 12K on them. Alignment was supposedly within spec when wheels/tires were installed (don't have the paperwork/number
$540 later, got 2 new tires to be installed on Monday.

The car is an '07 E90 335, H&R Touring Cup Kit (springs/shocks) 19x10 vmr's, +25 offset, 265/30 Continental Extreme Contact DWs. With my setup, is this type of wear to be expected, or is there something wrong? I don't know whether the issue is the alignment done improperly, or the fact that the aftermarket suspension won't allow the proper (factory)camber settings-am I going to need any additional suspension bits to allow the camber to be dialed in properly? I plan on having the alignment done at the BMW dealer, but I'm hoping to get some input from you guys so that I can get it done right without having to make multiple trips to the shop.
Appreciate 0
      02-25-2012, 11:34 PM   #2
Fraggy
Brigadier General
United_States
46

 
Fraggy's Avatar
 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego


Posts: 3,321
iTrader: (11)

It seems like its more of a tire/aggressive driving issue. Even the outside of the tire is to the markers after 12k, that's a lot wear.

My shop increased a tad of toe to even out wear from camber. Not sure if it's gonna work, only put about 10k on so far.
__________________
Step--Premium--Sport--Nav--20% Tint--Blacklines--18" Beyern Mesh--Michelin Super Sports--Bastuck Exhaust--M3 Steering Wheel--BMW Performance Springs--Koni--M3 Front/Rear Sways--
Appreciate 0
      02-26-2012, 07:24 PM   #3
ciomas
Captain
Poland
11

 
ciomas's Avatar
 
Drives: M4
Join Date: Feb 2010
Location: 3city PL


Posts: 670
iTrader: (0)

my god! that must be the most extreme case I've seen
__________________
335 - Íhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD
M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp.
Appreciate 0
      02-26-2012, 07:56 PM   #4
achien
AC
Canada
28

 
Drives: E90 Post Members Crazy
Join Date: May 2007
Location: Toronto, Canada


Posts: 2,378
iTrader: (0)

now that's what I called a "bald" tire.

you have some serious negative camber + toe-out settings.
__________________
Your Supreme Leader
Appreciate 0
      02-27-2012, 12:25 AM   #5
Chowbow
pew pew
80

 
Drives: 三三五i
Join Date: Aug 2007
Location: CA


Posts: 6,729
iTrader: (5)

Garage List
Maybe it's just me but I don't think it's THAT bad really - I mean it's definitely worn and more worn on the inside but not out of this world. 12k miles is not unheard of on a high performance tire, especially on the back of a RWD car. Although it definitely looks like you can dial out some toe or camber to get more even tire wear. Adjusting the rear camber also affects the toe at the same time so you'll have to find a happy medium.
__________________
CSL replicas are now CSL counterfeits. Jesus saves, like Valentine1.
Appreciate 0
      02-27-2012, 12:38 AM   #6
Jeff@TopGearSolutions
BimmerPost Supporting Vendor
United_States
237


 
Jeff@TopGearSolutions's Avatar
 
Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com


Posts: 18,050
iTrader: (32)

Send a message via AIM to Jeff@TopGearSolutions
Quote:
Originally Posted by HollowPoints View Post
Took my car in for service, and once on the lift I see this:


My Contis are done, about 12K on them. Alignment was supposedly within spec when wheels/tires were installed (don't have the paperwork/number
$540 later, got 2 new tires to be installed on Monday.

The car is an '07 E90 335, H&R Touring Cup Kit (springs/shocks) 19x10 vmr's, +25 offset, 265/30 Continental Extreme Contact DWs. With my setup, is this type of wear to be expected, or is there something wrong? I don't know whether the issue is the alignment done improperly, or the fact that the aftermarket suspension won't allow the proper (factory)camber settings-am I going to need any additional suspension bits to allow the camber to be dialed in properly? I plan on having the alignment done at the BMW dealer, but I'm hoping to get some input from you guys so that I can get it done right without having to make multiple trips to the shop.
Anything can knock an alignment out, like a really bad pot hole, or a change in suspension geometry. Did you get the car aligned after you lowered the car?

You want your alignment within spec but the stock settings are rubbish. What is important for tire wear is zero toe.

There is common misconception that camber causes abnormal wear, and although it can when its extremely aggressive, its the toe that causes the problem.

I used to run -2 degrees camber on my last car with 0 toe and after 10K wear was PERFECTLY even.

Regardless of all that you needed new tires even a while ago as you are still on the wear indicators on the outside of the tire.
Appreciate 0
      02-27-2012, 01:01 AM   #7
HollowPoints
Private
1

 
Drives: 2007 335i
Join Date: Nov 2010
Location: CT


Posts: 60
iTrader: (0)

Yes alignment was done when the wheels/tires were installed, supposedly to factory spec. Both tires were worn, right rear being worse of the two. As alluded to n the title, I've been making use of the extra hp the Cobb provides, but my main concern was how uneven the wear.

Thanks for the help!
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 02:14 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST