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

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques

Post Reply
 
Thread Tools Search this Thread
      10-20-2021, 08:38 PM   #1
drroc
First Lieutenant
238
Rep
362
Posts

Drives: 2015 M3 - 6MT
Join Date: Dec 2016
Location: San Jose

iTrader: (1)

front hubs

How long do the front hubs last on the track? I am pretty sure mine are starting to go out as there is a decent amount of bearing like noise when I turn above 40mph. Looks like they are fairly easy to replace judging by the picture of the part.
https://www.turnermotorsport.com/p-5...ub-with-beari/
Appreciate 0
      10-20-2021, 09:11 PM   #2
SYT_Shadow
///M Powered for Life
SYT_Shadow's Avatar
United_States
8384
Rep
8,513
Posts

Drives: E90M/E92M/F80CS/M4GTSx2/MiniS
Join Date: Sep 2010
Location: Greenwich, CT

iTrader: (1)

Quote:
Originally Posted by drroc View Post
How long do the front hubs last on the track? I am pretty sure mine are starting to go out as there is a decent amount of bearing like noise when I turn above 40mph. Looks like they are fairly easy to replace judging by the picture of the part.
https://www.turnermotorsport.com/p-5...ub-with-beari/
15k miles of mixed use, that's how long they last for me

The M4 GT4 maintenance schedule says 5k miles
Appreciate 0
      10-20-2021, 09:11 PM   #3
jfritz27
Lieutenant
340
Rep
580
Posts

Drives: 2017 F80 ZCP
Join Date: Dec 2014
Location: New Jersey

iTrader: (0)

I plan to do mine before next track season, 45k-ish miles. I don't have any clear symptoms at this point, but bought them (along with 4 required bolts) from FCPEuro so will be able to swap out again pre-emptively down the road for free as I probably will keep the car. Looks like FCP still has them on "discount" at $275 each (vs 317 from ECS)

DIY here:
https://f80.bimmerpost.com/forums/sh....php?t=1572940
Appreciate 0
      10-20-2021, 09:43 PM   #4
drroc
First Lieutenant
238
Rep
362
Posts

Drives: 2015 M3 - 6MT
Join Date: Dec 2016
Location: San Jose

iTrader: (1)

Thanks guys! I'll see if I can get the parts in time for the Laguna event...
Appreciate 0
      10-20-2021, 10:02 PM   #5
jfritz27
Lieutenant
340
Rep
580
Posts

Drives: 2017 F80 ZCP
Join Date: Dec 2014
Location: New Jersey

iTrader: (0)

The 2 screws that hold the rotor on are notorious for seizing up, be prepared with some thread catalyst. My BMW dealer had to drill one out and killed the threads in the process.
Appreciate 0
      10-20-2021, 10:11 PM   #6
F82KPowers
Lieutenant
F82KPowers's Avatar
United_States
372
Rep
440
Posts

Drives: F82, E46 M3, 86' 325, 04 MCS
Join Date: Aug 2021
Location: Bay Area, CA

iTrader: (0)

Quote:
Originally Posted by drroc View Post
How long do the front hubs last on the track? I am pretty sure mine are starting to go out as there is a decent amount of bearing like noise when I turn above 40mph. Looks like they are fairly easy to replace judging by the picture of the part.
https://www.turnermotorsport.com/p-5...ub-with-beari/
If you drive like Robert Kubica on track, then you could theoretically run through a set in about 450 miles. Otherwise, they can last around 4000 miles of exclusive track use based on the estimations below:

Appreciate 0
      10-21-2021, 12:05 PM   #7
drroc
First Lieutenant
238
Rep
362
Posts

Drives: 2015 M3 - 6MT
Join Date: Dec 2016
Location: San Jose

iTrader: (1)

What size torx bit is necessary for the front hub bolts?
Appreciate 0
      10-21-2021, 12:51 PM   #8
jfritz27
Lieutenant
340
Rep
580
Posts

Drives: 2017 F80 ZCP
Join Date: Dec 2014
Location: New Jersey

iTrader: (0)

The new bolts should be Torx PLUS 60, the bolt changed over the years. The original ones from years ago I believe are Torx (standard) 60.
Appreciate 0
      10-21-2021, 06:42 PM   #9
D_SheerDrivingPleasure
Second Lieutenant
United_States
244
Rep
293
Posts

Drives: F80 comp (6 speed)
Join Date: Aug 2020
Location: NYC

iTrader: (0)

I recently noticed my LF wheel making a cyclical chrip/squeak. Doesn't appear to be break pad rubbing on the rotor.

Is this symptomatic of a bad hub?
Appreciate 0
      10-21-2021, 07:07 PM   #10
jfritz27
Lieutenant
340
Rep
580
Posts

Drives: 2017 F80 ZCP
Join Date: Dec 2014
Location: New Jersey

iTrader: (0)

Quote:
Originally Posted by D_SheerDrivingPleasure View Post
I recently noticed my LF wheel making a cyclical chrip/squeak. Doesn't appear to be break pad rubbing on the rotor.

Is this symptomatic of a bad hub?
If the frequency of the noise seems rotational (varies with wheelspeed), then very possibly. Could be corroborated with wheel wiggle when corner is in air and trying to induce play when grabbing and pushing tire at 12/6 or 3/9 o'clock positions.
Appreciate 1
      10-21-2021, 07:30 PM   #11
D_SheerDrivingPleasure
Second Lieutenant
United_States
244
Rep
293
Posts

Drives: F80 comp (6 speed)
Join Date: Aug 2020
Location: NYC

iTrader: (0)

Quote:
Originally Posted by jfritz27 View Post
Quote:
Originally Posted by D_SheerDrivingPleasure View Post
I recently noticed my LF wheel making a cyclical chrip/squeak. Doesn't appear to be break pad rubbing on the rotor.

Is this symptomatic of a bad hub?
If the frequency of the noise seems rotational (varies with wheelspeed), then very possibly. Could be corroborated with wheel wiggle when corner is in air and trying to induce play when grabbing and pushing tire at 12/6 or 3/9 o'clock positions.
hmm. maybe.

Bimmerpost is worse than WebMD...I find myself self diagnosing. Now it's a failing hub and RLS.
Appreciate 0
      10-21-2021, 11:07 PM   #12
F82KPowers
Lieutenant
F82KPowers's Avatar
United_States
372
Rep
440
Posts

Drives: F82, E46 M3, 86' 325, 04 MCS
Join Date: Aug 2021
Location: Bay Area, CA

iTrader: (0)

Quote:
Originally Posted by D_SheerDrivingPleasure View Post
Quote:
Originally Posted by jfritz27 View Post
Quote:
Originally Posted by D_SheerDrivingPleasure View Post
I recently noticed my LF wheel making a cyclical chrip/squeak. Doesn't appear to be break pad rubbing on the rotor.

Is this symptomatic of a bad hub?
If the frequency of the noise seems rotational (varies with wheelspeed), then very possibly. Could be corroborated with wheel wiggle when corner is in air and trying to induce play when grabbing and pushing tire at 12/6 or 3/9 o'clock positions.
hmm. maybe.

Bimmerpost is worse than WebMD...I find myself self diagnosing. Now it's a failing hub and RLS.
Crankhub
Appreciate 1
      10-24-2021, 10:55 AM   #13
Kilabyte
I'm Batman!
Poland
2447
Rep
995
Posts

Drives: Mineral White M3 6MT
Join Date: Jun 2019
Location: Massachusetts

iTrader: (1)

Is that the clicking sound I hear driving by walls or when turning hard? Always thought it was the spacers
__________________

S55, 2JZ
Appreciate 0
      10-26-2021, 02:31 PM   #14
drroc
First Lieutenant
238
Rep
362
Posts

Drives: 2015 M3 - 6MT
Join Date: Dec 2016
Location: San Jose

iTrader: (1)

Quote:
Originally Posted by Kilabyte View Post
Is that the clicking sound I hear driving by walls or when turning hard? Always thought it was the spacers
You will hear a howling/growling noise that increases with speed especially when turning.
Appreciate 1
Kilabyte2447.00
      10-27-2021, 02:53 PM   #15
drroc
First Lieutenant
238
Rep
362
Posts

Drives: 2015 M3 - 6MT
Join Date: Dec 2016
Location: San Jose

iTrader: (1)

So replaced both hubs, and the car is nice and smooth again. I did notice that the driver side hub was pretty notchy. The most annoying part of this process is the torquing the hub bolts 90 degrees post 122Nm torque target.
Attached Images
 
Appreciate 6
      12-02-2021, 04:51 PM   #16
hC1001
Captain
368
Rep
679
Posts

Drives: E36 M3, F80 M3
Join Date: Nov 2019
Location: Brooklyn, NY

iTrader: (4)

Quote:
Originally Posted by jfritz27 View Post
The new bolts should be Torx PLUS 60, the bolt changed over the years. The original ones from years ago I believe are Torx (standard) 60.
I used a standard T60 socket and it worked out fine for me. The difference in the two versions is the thread pitch. I think the older version is 1.5 and the newer one is 1.25. Its suggested that the bolts should also be replaced and not reused.
Appreciate 0
      12-02-2021, 04:56 PM   #17
BetrayMyWord
Private
57
Rep
53
Posts

Drives: BMW 2019 M4
Join Date: Jun 2019
Location: Sunnyvale, CA

iTrader: (0)

I was lazy and I only replaced them after 27k mi and 40+ track days. By the time we took them out, the brake rotors already left some scratch on the calipers due to excessive flex from the hubs.
Appreciate 0
      12-02-2021, 07:06 PM   #18
D_SheerDrivingPleasure
Second Lieutenant
United_States
244
Rep
293
Posts

Drives: F80 comp (6 speed)
Join Date: Aug 2020
Location: NYC

iTrader: (0)

I still have 9 months remaining on my warranty.

Any reason why a hub replacement would not be covered if mine show signs of failure?
Appreciate 1
Suds841.50
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



All times are GMT -5. The time now is 07:42 PM.




f80post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
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