BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Go Back   6Post.com | BMW 6-Series Forum > BMW 6 Series Forum > BMW M6 Forum (F12 / F13)

Post Reply
 
Thread Tools Search this Thread
      11-10-2018, 07:15 PM   #1
DDF200
New Member
DDF200's Avatar
United_States
2
Rep
13
Posts

Drives: M6 F12; 335D; i3
Join Date: Aug 2014
Location: Silicon Valley

iTrader: (0)

Sport4s Rubbing on Front

I have a '13 M6 that had Michelin Pilot Super Sport (original) with fronts 265 35 zr20.

Just had a set of Pilot Sport4s installed with 265 35 zr20's on the front. They are rubbing the front of the inner fender well plastic on tight left/right turns, on both sides. A full alignment performed, and another installer checked and verified they were mounted/aligned correctly.

Any suggestions for work around? How to prevent rubbing?

Do I need to go back to the PSS?
Appreciate 0
      11-10-2018, 07:23 PM   #2
BlackBear
Private First Class
8
Rep
135
Posts

Drives: M6 Cab
Join Date: Jul 2012
Location: Sunshine

iTrader: (0)

Compare the tire specs and dimensions of those two tires on tirerack.com.

I hope that they are the same or very similar.
Appreciate 1
DDF2001.50

      11-10-2018, 08:40 PM   #3
MelbourneFinn
Private
Australia
12
Rep
53
Posts

Drives: 2017 M6 GC
Join Date: Dec 2017
Location: Melbourne, Australia

iTrader: (0)

Garage List
Original rims? If not, most likely incorrect offset... Or are you using spacers?
Appreciate 0
      11-11-2018, 03:56 PM   #4
DDF200
New Member
DDF200's Avatar
United_States
2
Rep
13
Posts

Drives: M6 F12; 335D; i3
Join Date: Aug 2014
Location: Silicon Valley

iTrader: (0)

Yes, original rims, no spacers, no modifications to the vehicle. Great suggestion on checking tirerack. According to their tire specs comparison chart the S4S tread depths is greater, but slightly narrower tread width. Tire diameter is the same. Not clear to me if this would be enough to cause the rubbing.

I think I have 2 options:

1) replace the fronts with PSS (star BMW) and eliminate the rubbing problem. If I do that, do I compromise general driving safety by keeping the S4S on the rear? Or should I suck it up and replace all 4 so they match. I'm not driving this on the track, I do like to drive a little too fast occasionally but 80% of the time, I'm not pushing the vehicle.

2) stay with the s4s on all four corners, minimize sharp turns where possible, and deal with the rubbing. I inspected the wheel wells, and the front air vents in the inner well have already got broken vent slats due to the rubbing (after <1000 miles). Not sure there can be any more damage at this point. But I'm sure the heat/friction from additional occasional rubbing will take a toll, at least until the tread wears down.

The S4S rubber is nice and I'm getting a better ride. I'd love to keep them, but don't want to compromise driving safety or vehicle integrity.

My local service shop didn't want to modify the inner well, so not sure I want to explore that further at this time.

Maybe there is another option I'm not thinking about? Thanks for your input!
Attached Images
 
Appreciate 0
      11-12-2018, 12:04 AM   #5
brad850csi
Major
247
Rep
1,017
Posts

Drives: 16 F13 M6 Comp
Join Date: Jan 2015
Location: Auckland, New Zealand

iTrader: (0)

This does strike me as a bit strange. Can you take a photo showing the wear on the guards?

I'm currently running 295's at the front and don't have any rubbing at all!
__________________
SCOTT26 "So as an admirer of the M5 and a potential customer of an M5 Touring. I would run naked around the streets of Garching if they were to offer one."
Appreciate 0
      11-12-2018, 06:29 PM   #6
DDF200
New Member
DDF200's Avatar
United_States
2
Rep
13
Posts

Drives: M6 F12; 335D; i3
Join Date: Aug 2014
Location: Silicon Valley

iTrader: (0)

Here are some pics of the areas that are rubbing and breaking.

First 2 are left side. Last one is right side.

I'm now curious and intrigued that you have 295's mounted with no problems....
Attached Images
   
Appreciate 0
      11-13-2018, 04:25 PM   #7
spikespiegel
Private First Class
United_States
44
Rep
146
Posts

Drives: BMW M6 comp
Join Date: Dec 2016
Location: California

iTrader: (0)

Garage List
275 / 35/ fronts on PS4S on my f13 coupe and NO rubbing whatsoever. This is indeed odd
Appreciate 0
      11-13-2018, 04:58 PM   #8
m34josh
New Member
7
Rep
23
Posts

Drives: 2014 M6
Join Date: Nov 2016
Location: Man Jose, CA

iTrader: (0)

Same

Quote:
Originally Posted by spikespiegel View Post
275 / 35/ fronts on PS4S on my f13 coupe and NO rubbing whatsoever. This is indeed odd
Appreciate 0
      11-13-2018, 05:21 PM   #9
SoCalM6GC
First Lieutenant
101
Rep
381
Posts

Drives: M6 GC
Join Date: Jul 2017
Location: SoCal

iTrader: (1)

I wonder if there is a difference somewhere up front on the coupe vs. the grancoupe because i tried to run 275/35/20 and those tires rubbed the same areas as in the pictures that DDF200 posted
Appreciate 0
      11-13-2018, 07:12 PM   #10
m34josh
New Member
7
Rep
23
Posts

Drives: 2014 M6
Join Date: Nov 2016
Location: Man Jose, CA

iTrader: (0)

Mostly out of paranoia, I went out and checked mine (coupe.) Not even a scratch on the plastic in that area, and i've had the tires on for a couple thousand miles already. You are right, there must be some difference in the GC and CP
Appreciate 0
      11-14-2018, 02:22 AM   #11
brad850csi
Major
247
Rep
1,017
Posts

Drives: 16 F13 M6 Comp
Join Date: Jan 2015
Location: Auckland, New Zealand

iTrader: (0)

I've been running my 295/30r20 setup on 10" wheels for about 6 weeks now and I go to full lock at least twice a day - not a single mark.

What year is yours and is it a Comp Pack? You say F12 which is the 'Vert, is that correct?
__________________
SCOTT26 "So as an admirer of the M5 and a potential customer of an M5 Touring. I would run naked around the streets of Garching if they were to offer one."
Appreciate 0
      11-14-2018, 02:48 AM   #12
MelbourneFinn
Private
Australia
12
Rep
53
Posts

Drives: 2017 M6 GC
Join Date: Dec 2017
Location: Melbourne, Australia

iTrader: (0)

Garage List
Quote:
Originally Posted by m34josh View Post
Mostly out of paranoia, I went out and checked mine (coupe.) Not even a scratch on the plastic in that area, and i've had the tires on for a couple thousand miles already. You are right, there must be some difference in the GC and CP
No, doesn’t stand bs test... First, 265/35x20 is the original size, second I had the same set of MP4S first in an F13 ‘14 CP, and now in an F06 ‘17 CP - no rubbing

Looking at the pictures, perhaps a silly question, but is it possible that these are 21 inch wheels? 265/35x21 would most likely rub exactly like this... But if original wheels, unlikethe case...?
Appreciate 0
      11-14-2018, 12:15 PM   #13
DDF200
New Member
DDF200's Avatar
United_States
2
Rep
13
Posts

Drives: M6 F12; 335D; i3
Join Date: Aug 2014
Location: Silicon Valley

iTrader: (0)

Quote:
Originally Posted by brad850csi View Post
I've been running my 295/30r20 setup on 10" wheels for about 6 weeks now and I go to full lock at least twice a day - not a single mark.

What year is yours and is it a Comp Pack? You say F12 which is the 'Vert, is that correct?
Yes, 'vert. 2013, no Comp pack. All original. No mods. Photo is pre install of PS4S.
Attached Images
 

Last edited by DDF200; 11-14-2018 at 12:24 PM.
Appreciate 0
      11-14-2018, 12:23 PM   #14
DDF200
New Member
DDF200's Avatar
United_States
2
Rep
13
Posts

Drives: M6 F12; 335D; i3
Join Date: Aug 2014
Location: Silicon Valley

iTrader: (0)

Quote:
Originally Posted by MelbourneFinn View Post
Looking at the pictures, perhaps a silly question, but is it possible that these are 21 inch wheels? 265/35x21 would most likely rub exactly like this... But if original wheels, unlikethe case...?
I'm not familiar with what a 21 inch wheel would look like. Does the pic help?
Attached Images
 
Appreciate 0
      11-14-2018, 03:38 PM   #15
Kkgy79
Private
3
Rep
69
Posts

Drives: 2013 m5
Join Date: Nov 2016
Location: Usa

iTrader: (0)

Is it m6 rim? Or f10 m5 rim?
Appreciate 0
      11-15-2018, 02:35 PM   #16
Havy
V8 addicted
Havy's Avatar
Germany
64
Rep
165
Posts

Drives: M6 Gran Coupé
Join Date: Sep 2018
Location: Europe

iTrader: (0)

Quote:
Originally Posted by DDF200 View Post
I'm not familiar with what a 21 inch wheel would look like. Does the pic help?
This Is definitely a 20“ rim. 265/35x20 it shouldn’t be a problem if the rim is for the M5 or M6 the ET is slightly different but is is a 20“ rim. That really strange.
Appreciate 0
      11-16-2018, 07:08 PM   #17
DDF200
New Member
DDF200's Avatar
United_States
2
Rep
13
Posts

Drives: M6 F12; 335D; i3
Join Date: Aug 2014
Location: Silicon Valley

iTrader: (0)

I've called the local dealer, no success or obvious issues identified over the phone ("Are you sure they are the correct size....") service wants to look at it and assess the issue. One suggested over the phone that the car has been in an accident and the inner fender well cover has been misaligned. I know for fact it hasn't been in an accident!

I'll probably take it to the dealer to see if a tech can figure it out - but I'm skeptical.

Thanks for everyone's input/thinking on this. Strange indeed....
Appreciate 0
      11-17-2018, 01:17 AM   #18
MelbourneFinn
Private
Australia
12
Rep
53
Posts

Drives: 2017 M6 GC
Join Date: Dec 2017
Location: Melbourne, Australia

iTrader: (0)

Garage List
Hope you get it sorted. I had a look at mine (fair enough, it’s an F06, but nobody has ever indicated there is a difference on the front axle between F06/12/13) today when washing the beast, and I must say there is significantly more space between the wheel and the fender well cover than in yours... That explains why the same size wheels and same tyres in your car rub but not in mine, but still doesn’t explain the reason...
Appreciate 0
      11-17-2018, 02:20 AM   #19
brad850csi
Major
247
Rep
1,017
Posts

Drives: 16 F13 M6 Comp
Join Date: Jan 2015
Location: Auckland, New Zealand

iTrader: (0)

Can you take a pic dead centre on the front axle with the wheel straight? I’m just thinking it might be physically further forward than it should be?

Or measure center to centre of each wheel? Naturally it should be 2851mm
Appreciate 0
      11-17-2018, 03:04 PM   #20
Flying Ace
Major General
Flying Ace's Avatar
United_States
3420
Rep
9,862
Posts

Drives: M6GC ZCP, X5d
Join Date: Jul 2014
Location: SF, CA

iTrader: (5)

Could it possibly be over inflated?
Appreciate 0
      11-17-2018, 03:53 PM   #21
brad850csi
Major
247
Rep
1,017
Posts

Drives: 16 F13 M6 Comp
Join Date: Jan 2015
Location: Auckland, New Zealand

iTrader: (0)

Quote:
Originally Posted by Flying Ace View Post
Could it possibly be over inflated?
The rubbing looks more like what the the point the corner of the sidewall and tread would touch I think.

But a good question I think is does this only happen when turning the wheels, at what angle and both ways, ie can the inside of the drivers side touch when the tyres are at full lock to the left? Or is it just drivers side when turning hard right?
Appreciate 0
      11-18-2018, 01:43 PM   #22
DDF200
New Member
DDF200's Avatar
United_States
2
Rep
13
Posts

Drives: M6 F12; 335D; i3
Join Date: Aug 2014
Location: Silicon Valley

iTrader: (0)

Quote:
Originally Posted by brad850csi View Post
The rubbing looks more like what the the point the corner of the sidewall and tread would touch I think.

But a good question I think is does this only happen when turning the wheels, at what angle and both ways, ie can the inside of the drivers side touch when the tyres are at full lock to the left? Or is it just drivers side when turning hard right?
Yes, the rubbing only occurs during tight/full turns. Sharp right turn causes left side rubs; sharp left turn causes right side rub.

It definitely is the edge/"corner" of the tire rubbing only on full/sharp turns. Shallow turns cause no rubbing.
Appreciate 0
Post Reply

Bookmarks

Tags
michelin, rubbing, size, tires

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 12:53 AM.




6post.com
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, 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