BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques
 
Post Reply
 
Thread Tools Search this Thread
      06-06-2011, 01:54 AM   #23
PINHEAD
Motorsport Passion!!!
PINHEAD's Avatar
Monaco
15
Rep
978
Posts

Drives: E92M3/997.2RS
Join Date: Feb 2011
Location: Los Angeles

iTrader: (8)

sounds like over-torque to cause it to do that.
i bitch at my wheel/tire guy every time he said he's going to put 90+lbs..
i told him its 88lbs...
__________________
Appreciate 0
      06-06-2011, 03:34 AM   #24
Ice323
New Member
0
Rep
7
Posts

Drives: Space gray E92 M3
Join Date: Apr 2011
Location: Tennessee

iTrader: (0)

Quote:
Originally Posted by R A W L S View Post
Thanks, I don't know the damage and repair bill yet. Mechanically It will almost certainly need a new rotor and wheel. It may also need a new control arm, and who knows what else. Cosmetically it needs a new fender which the wheel broke while breaking free. I'll post more info in a day or two.
well, man, I wish you the best of luck on that repair total. Look on the bright side. At least it didn't come apart on you in the braking zone of the fastest straight.
Appreciate 0
      06-06-2011, 04:06 AM   #25
mastek
e36s54, F10M5, e70X5d
mastek's Avatar
United_States
33
Rep
1,613
Posts

Drives: slow
Join Date: Aug 2008
Location: Los Angeles, CA

iTrader: (15)

Are the wheels powdercoated?
Appreciate 0
      06-06-2011, 05:11 AM   #26
LiM3y
Major
LiM3y's Avatar
United Kingdom
20
Rep
1,259
Posts

Drives: 2008 E90 M3
Join Date: Jun 2009
Location: CT

iTrader: (3)

I check the torque just before I go out when the wheel is at its coolest.

I also bought new lug nuts just for track use this season. $65 well spent for peace of mind if nothing else.
__________________
Appreciate 0
      06-06-2011, 07:31 AM   #27
Richbot
Colonel
37
Rep
2,190
Posts

Drives: Jerez Black E90
Join Date: Sep 2007
Location: STL

iTrader: (2)

Check torque before every session. Not optional IMO. I've forced a student to miss half a session when he had a torque wrench sitting next to his car and hadn't checked them. He had torqued them in the morning and run one session. They turned about 1/4 turn before the wrench clicked.
__________________
Appreciate 0
      06-06-2011, 09:00 AM   #28
MaxL
Captain
Canada
19
Rep
953
Posts

Drives: E90 M3, Cayenne T, 991 GT3
Join Date: Jun 2007
Location: Bay Area

iTrader: (0)

Thanks for posting - it's a good lesson for many people here. I always thought torquing in the beginning of a day was enough.
Appreciate 0
      06-06-2011, 09:44 AM   #29
Richbot
Colonel
37
Rep
2,190
Posts

Drives: Jerez Black E90
Join Date: Sep 2007
Location: STL

iTrader: (2)

On many cars it probably is enough to just torque them at the beginning of the day, but I don't bother findingout. It's quick, easy, and you shouldn't be jumping out of the car without looking at it again until the next time you strap in anyway so it can only help you catch other problems. I was once as guilty as the next guy but I got wise the first time I had a wheel try to come off on an out lap during a qualifying session

<- Qualifies as an "Experienced" racer now which means "has screwed up a lot"
__________________
Appreciate 0
      06-06-2011, 10:23 AM   #30
R A W L S
R A W L S
R A W L S's Avatar
United_States
5
Rep
163
Posts

Drives: 08 BMW M3
Join Date: May 2010
Location: _____________________

iTrader: (0)

Garage List
2008 M3  [0.00]
I think I will switch to studs, I don't think I can trust bolts anymore even if they are brand new. And I will religiously check torque before each session now. All things considered, I am lucky. This happened during a fairly slow hairpin at about 50mph. It could have happened on one of the straights (115+mph) or sweeping corners (70-100mph).

Thanks for all the support and suggestions.

Last edited by R A W L S; 06-06-2011 at 10:31 AM.
Appreciate 0
      06-06-2011, 10:55 AM   #31
Groundpilot
Major
Groundpilot's Avatar
United_States
16
Rep
1,362
Posts

Drives: 135I DCT , e92 M3 DCT, Audi A6
Join Date: Mar 2010
Location: long island,ny

iTrader: (0)

Send a message via ICQ to Groundpilot
But are the studs safer?
__________________

David
Appreciate 0
      06-06-2011, 11:00 AM   #32
Erhan
Colonel
Erhan's Avatar
United_States
38
Rep
2,466
Posts

Drives: Cooper S
Join Date: Oct 2008
Location: Seattle

iTrader: (0)

Quote:
Originally Posted by M3 09 AND135I 11 View Post
But are the studs safer?
If anything I'd guess they're less safe. There are 2 things that needs to be screwed with the studs. But I think it is splitting hair. I use studs. Makes the wheel changes very easy. Also they look really nice.

Thanks to this topic though, I will religiously check my wheels before each session now. And I will get new set of whell studs every season.
__________________
2011 MINI Cooper S
previous cars: E92 M3, Z4MC, Z4 Roadster, E36 328 Sedan
Appreciate 0
      06-06-2011, 11:30 AM   #33
R A W L S
R A W L S
R A W L S's Avatar
United_States
5
Rep
163
Posts

Drives: 08 BMW M3
Join Date: May 2010
Location: _____________________

iTrader: (0)

Garage List
2008 M3  [0.00]
Quote:
Originally Posted by erhanh View Post
Quote:
Originally Posted by M3 09 AND135I 11 View Post
But are the studs safer?
If anything I'd guess they're less safe. There are 2 things that needs to be screwed with the studs. But I think it is splitting hair. I use studs. Makes the wheel changes very easy. Also they look really nice.

Thanks to this topic though, I will religiously check my wheels before each session now. And I will get new set of whell studs every season.
My bolts were only a year old. I track my car twice a month. If you track more than once a month I'd get new bolts quarterly to play it safe.
Appreciate 0
      06-06-2011, 12:35 PM   #34
chris328i
Private First Class
1
Rep
111
Posts

Drives: 328i
Join Date: Mar 2011
Location: Ohio

iTrader: (0)

It's very unusual for genuine OEM wheel lug bolts to break. They might strip but they should not break as they are of modest hardness to prevent brittleness and provide good toughness.
Appreciate 0
      06-06-2011, 08:44 PM   #35
mastek
e36s54, F10M5, e70X5d
mastek's Avatar
United_States
33
Rep
1,613
Posts

Drives: slow
Join Date: Aug 2008
Location: Los Angeles, CA

iTrader: (15)

were the wheels powdercoated??
Appreciate 0
      06-06-2011, 09:49 PM   #36
R A W L S
R A W L S
R A W L S's Avatar
United_States
5
Rep
163
Posts

Drives: 08 BMW M3
Join Date: May 2010
Location: _____________________

iTrader: (0)

Garage List
2008 M3  [0.00]
Quote:
Originally Posted by mastek View Post
were the wheels powdercoated??
No, not powder coated
Appreciate 0
      06-07-2011, 08:05 AM   #37
mastek
e36s54, F10M5, e70X5d
mastek's Avatar
United_States
33
Rep
1,613
Posts

Drives: slow
Join Date: Aug 2008
Location: Los Angeles, CA

iTrader: (15)

Quote:
Originally Posted by R A W L S View Post
No, not powder coated

Painted? Is it a color or finish?

The reason i bring this up is that sometimes the paint/powdercoat will heat up (heat transfer from brakes) and actually melt down at the wheel's back plate (they are not supposed to paint/powdercoat there).
This will cause space between the wheel and the hub and the rotational stresses will crack the bolt heads.

If your wheel is painted black, pink, whatever .... take a pic of the backplate and post.
Ive seen this happen at the track where the wheel came off as a result.
Appreciate 0
      06-07-2011, 08:15 AM   #38
LiM3y
Major
LiM3y's Avatar
United Kingdom
20
Rep
1,259
Posts

Drives: 2008 E90 M3
Join Date: Jun 2009
Location: CT

iTrader: (3)

Quote:
Originally Posted by mastek View Post
Painted? Is it a color or finish?

The reason i bring this up is that sometimes the paint/powdercoat will heat up (heat transfer from brakes) and actually melt down at the wheel's back plate (they are not supposed to paint/powdercoat there).
This will cause space between the wheel and the hub and the rotational stresses will crack the bolt heads.

If your wheel is painted black, pink, whatever .... take a pic of the backplate and post.
Ive seen this happen at the track where the wheel came off as a result.
The ARC-8s aren't painted on the back and the lugnut holes are not painted either.
__________________
Appreciate 0
      06-07-2011, 10:26 AM   #39
mastek
e36s54, F10M5, e70X5d
mastek's Avatar
United_States
33
Rep
1,613
Posts

Drives: slow
Join Date: Aug 2008
Location: Los Angeles, CA

iTrader: (15)

Quote:
Originally Posted by LiM3y View Post
The ARC-8s aren't painted on the back and the lugnut holes are not painted either.
Did you know that you can have wheels painted or powdercoated after they are made, regardless of manuf, model??
Appreciate 0
      06-07-2011, 10:49 AM   #40
LiM3y
Major
LiM3y's Avatar
United Kingdom
20
Rep
1,259
Posts

Drives: 2008 E90 M3
Join Date: Jun 2009
Location: CT

iTrader: (3)

Quote:
Originally Posted by mastek View Post
Did you know that you can have wheels painted or powdercoated after they are made, regardless of manuf, model??


__________________
Appreciate 0
      06-07-2011, 10:54 AM   #41
mastek
e36s54, F10M5, e70X5d
mastek's Avatar
United_States
33
Rep
1,613
Posts

Drives: slow
Join Date: Aug 2008
Location: Los Angeles, CA

iTrader: (15)

Quote:
Originally Posted by LiM3y View Post


Awww -- Thank You -- thats 4 me? right?? -- lol
Appreciate 0
      06-07-2011, 01:26 PM   #42
aus
Major General
United_States
125
Rep
7,482
Posts

Drives: Odysse
Join Date: Jul 2005
Location: Seal Beach, CA

iTrader: (5)

Quote:
Originally Posted by R A W L S View Post
My bolts were only a year old. I track my car twice a month. If you track more than once a month I'd get new bolts quarterly to play it safe.
From what I've read, you'll need to change studs too after a certain time/use.
__________________
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
Appreciate 0
      06-07-2011, 03:46 PM   #43
sharkfighter
Private First Class
sharkfighter's Avatar
8
Rep
169
Posts

Drives: e90 M3
Join Date: Feb 2009
Location: Rocky Mtns.

iTrader: (0)

Quote:
Originally Posted by mastek View Post
Did you know that you can have wheels painted or powdercoated after they are made, regardless of manuf, model??
Did the OP have his lug holes or backs of the Arc-8 wheels painted?
Appreciate 0
      06-07-2011, 05:27 PM   #44
R A W L S
R A W L S
R A W L S's Avatar
United_States
5
Rep
163
Posts

Drives: 08 BMW M3
Join Date: May 2010
Location: _____________________

iTrader: (0)

Garage List
2008 M3  [0.00]
Quote:
Originally Posted by sharkfighter View Post
Quote:
Originally Posted by mastek View Post
Did you know that you can have wheels painted or powdercoated after they are made, regardless of manuf, model??
Did the OP have his lug holes or backs of the Arc-8 wheels painted?
There is no powder coating or paint anywhere on the wheel or lug holes. Thanks sharkfighter.
Appreciate 0
Post 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 04:06 AM.




m3post
m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, 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