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
      07-01-2020, 09:44 AM   #12871
//steve\\
Major
//steve\\'s Avatar
United_States
1074
Rep
1,026
Posts

Drives: 2012 E92 M3
Join Date: May 2012
Location: Atlanta, GA

iTrader: (2)

I should add that the car has the Dinan front sway and OE rear. Car feels good as is so I'm not inclined to change either. I had to get new BW shorter links to go with my MCS setup going on the car, rear just has Fall-Line links.
__________________
Steve::::2012 AW E92::::IG - @sjs0433
Appreciate 0
      07-01-2020, 09:55 AM   #12872
rhyary
Colonel
rhyary's Avatar
United_States
1557
Rep
2,858
Posts

Drives: 2013 M3
Join Date: May 2015
Location: Albany, NY

iTrader: (0)

Quote:
Originally Posted by //steve\\ View Post
I should add that the car has the Dinan front sway and OE rear. Car feels good as is so I'm not inclined to change either. I had to get new BW shorter links to go with my MCS setup going on the car, rear just has Fall-Line links.
If you need to drop the subframe for any reason, I strongly recommend getting an SB that is 50% stiffer than stock, if you do track days. It is a bigger job than the front so it should be done while you there for other stuff. Or if you do decide to replace the rear SB, also do the other stiffening usuals.
Appreciate 0
      07-01-2020, 10:04 AM   #12873
//steve\\
Major
//steve\\'s Avatar
United_States
1074
Rep
1,026
Posts

Drives: 2012 E92 M3
Join Date: May 2012
Location: Atlanta, GA

iTrader: (2)

Quote:
Originally Posted by rhyary View Post
If you need to drop the subframe for any reason, I strongly recommend getting an SB that is 50% stiffer than stock, if you do track days. It is a bigger job than the front so it should be done while you there for other stuff. Or if you do decide to replace the rear SB, also do the other stiffening usuals.
Won't be happening unless I ever decide to put a serious diff and/or change the final drive. Car already has solid subframe and diff bushings.

My experience with other cars is that stiffer rear sway bars usually feel better on the street but ultimately don't help (and often hurt) overall rear grip.
__________________
Steve::::2012 AW E92::::IG - @sjs0433
Appreciate 0
      07-01-2020, 10:05 AM   #12874
fsmtnbiker
First Lieutenant
620
Rep
327
Posts

Drives: E92 M3, Evora S, E36
Join Date: Jul 2013
Location: Phoenix, AZ

iTrader: (0)

If you don’t have a way to adjust them on the ground, disconnect one side and find a flat/level surface and make sure with the swaybar disconnected, that the front ride heights are equal. If they are, then lift the whole front of the car up and take out the preload at full droop - this will be extremely close to no preload. Close enough that until you’re getting a corner balance done you’ll never need to worry about it.
Appreciate 1
rhyary1557.00
      07-01-2020, 10:26 AM   #12875
//steve\\
Major
//steve\\'s Avatar
United_States
1074
Rep
1,026
Posts

Drives: 2012 E92 M3
Join Date: May 2012
Location: Atlanta, GA

iTrader: (2)

Quote:
Originally Posted by fsmtnbiker View Post
If you don’t have a way to adjust them on the ground, disconnect one side and find a flat/level surface and make sure with the swaybar disconnected, that the front ride heights are equal. If they are, then lift the whole front of the car up and take out the preload at full droop - this will be extremely close to no preload. Close enough that until you’re getting a corner balance done you’ll never need to worry about it.
Great! Thanks. I'll give that a shot. This isn't a track car (yet) for me either. Just sees a lot of fun on the road.

FWIW I didn't buy all this stuff either, previous owner of the car did it all so I'm just looking to make the most of what I've got. Only thing I've changed recently is swapping the Bilsteins that were on it to MCS.
__________________
Steve::::2012 AW E92::::IG - @sjs0433
Appreciate 0
      07-01-2020, 10:28 AM   #12876
dparm
Stop the hate, get a V8
dparm's Avatar
United_States
3848
Rep
8,625
Posts

Drives: C7 Corvette GS, AMG C63 S
Join Date: Jun 2013
Location: Frisco, TX

iTrader: (1)

Quote:
Originally Posted by Bartledoo View Post
I feel like I'm full of questions for you guys lately, but does anybody have a source for PFC Z54 pads other than bimmerworld? They are out of the 11 compound and I need to order soon.

Give Dave Zeckhausen a call at Zeckhausen Racing.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP
Appreciate 2
Bartledoo2690.00
SonnyJack323.00
      07-01-2020, 10:30 AM   #12877
dparm
Stop the hate, get a V8
dparm's Avatar
United_States
3848
Rep
8,625
Posts

Drives: C7 Corvette GS, AMG C63 S
Join Date: Jun 2013
Location: Frisco, TX

iTrader: (1)

Quote:
Originally Posted by Bartledoo View Post
Or ride the rev limiter in places because extra shifting is either not possible for a section and/or would slow us down. I'm actually getting a tune revision for 8600 rev limiter for this reason.

I do this at COTA on the back-straight. The shift from 4-5 at 150mph doesn't get me any extra speed or reduced lap time.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP
Appreciate 0
      07-01-2020, 11:49 AM   #12878
turbo_joe
Lieutenant Colonel
turbo_joe's Avatar
1590
Rep
1,578
Posts

Drives: 2012 M3 Coupe
Join Date: Jul 2015
Location: SOMD

iTrader: (2)

Quote:
Originally Posted by dparm View Post
I do this at COTA on the back-straight. The shift from 4-5 at 150mph doesn't get me any extra speed or reduced lap time.
Manual trans?

I think 145mph (gps speed) is about my limit in fifth with the DCT
__________________

Last edited by turbo_joe; 07-01-2020 at 01:45 PM..
Appreciate 0
      07-01-2020, 11:54 AM   #12879
SYT_Shadow
///M Powered for Life
SYT_Shadow's Avatar
11421
Rep
10,294
Posts

Drives: E90M/E92M/M4GTS/M4GT4/X5M
Join Date: Sep 2010
Location: Greenwich, CT

iTrader: (2)

Quote:
Originally Posted by Bartledoo View Post
I feel like I'm full of questions for you guys lately, but does anybody have a source for PFC Z54 pads other than bimmerworld? They are out of the 11 compound and I need to order soon.
I just returned 3 sets of PFC11 pads to BW. Call again.

I usually stock enough PFC hardware for at least a season at a time.
Appreciate 1
Bartledoo2690.00
      07-01-2020, 11:57 AM   #12880
dparm
Stop the hate, get a V8
dparm's Avatar
United_States
3848
Rep
8,625
Posts

Drives: C7 Corvette GS, AMG C63 S
Join Date: Jun 2013
Location: Frisco, TX

iTrader: (1)

Quote:
Originally Posted by turbo_joe View Post
Manual trans?

I think 145mph (gpd speed) is about my limit in fifth with the DCT

Yes, manual. I have tried a variety of things on that back straight and looked at the data. The fastest thing for my car is to just leave it in 3rd and send it a bit earlier, then let it bounce off the rev limiter in 4th for a moment before the braking zone.



downshift to 2nd at corner entry before the straight --> too much time lost on the 2-3 shift

upshift to 5th before braking zone --> too much speed bled off during the 4-5 shift, plus 5th gear is borderline too tall to make up for it

no-lift-shift all gears --> slightly faster but risky on 2-3 and 4-5; probably not worth the drivetrain shock unless you're fighting for a prize or on a flying lap



I'm usually at about 152mph at redline in 4th gear before the braking zone, FWIW.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP

Last edited by dparm; 07-01-2020 at 12:02 PM..
Appreciate 1
turbo_joe1589.50
      07-01-2020, 01:47 PM   #12881
turbo_joe
Lieutenant Colonel
turbo_joe's Avatar
1590
Rep
1,578
Posts

Drives: 2012 M3 Coupe
Join Date: Jul 2015
Location: SOMD

iTrader: (2)

Quote:
Originally Posted by dparm View Post
Yes, manual. I have tried a variety of things on that back straight and looked at the data. The fastest thing for my car is to just leave it in 3rd and send it a bit earlier, then let it bounce off the rev limiter in 4th for a moment before the braking zone.



I'm usually at about 152mph at redline in 4th gear before the braking zone, FWIW.
I have the same issue at Summit Point on the main circuit. Topping out 5th just before the brake zone but I haven't been back with my aero setup, I am probably going to lose 3-4mph and it will no longer be an issue lol
__________________
Appreciate 0
      07-01-2020, 04:44 PM   #12882
kayha12
Second Lieutenant
kayha12's Avatar
331
Rep
285
Posts

Drives: M3
Join Date: Mar 2018
Location: Frederick, MD

iTrader: (1)

Quote:
Originally Posted by turbo_joe View Post
I have the same issue at Summit Point on the main circuit. Topping out 5th just before the brake zone but I haven't been back with my aero setup, I am probably going to lose 3-4mph and it will no longer be an issue lol
I added a pretty big splitter since my last time at Summit and only lost about 2 mph on the front straight, however after reviewing data with other drivers... everyone lost max mph in all sectors since we were all comparing our laps from November. The heat will kill your power/max mph more than aero

Unless you have your wing set to an aggressive angle it shouldn't rob your top speed by much.
__________________
NASA Mid Atlantic - TT3 #97
'12 E92 M3 ZCP
Sponsored by Andrewtech Automotive
Appreciate 0
      07-01-2020, 04:49 PM   #12883
Bartledoo
Driver
Bartledoo's Avatar
2690
Rep
2,714
Posts

Drives: 2011 E90 M3 6MT
Join Date: Aug 2015
Location: Seattle, WA

iTrader: (0)

Garage List
Quote:
Originally Posted by kayha12 View Post
I added a pretty big splitter since my last time at Summit and only lost about 2 mph on the front straight, however after reviewing data with other drivers... everyone lost max mph in all sectors since we were all comparing our laps from November. The heat will kill your power/max mph more than aero

Unless you have your wing set to an aggressive angle it shouldn't rob your top speed by much.
Yea my aero didn't harm my top speed at all (on the main straight of my track main track), and it's coming out of a 2nd gear corner.
__________________
E90M 6MT Slicktop Single Humper in need of a diet
Appreciate 0
      07-01-2020, 08:40 PM   #12884
admranger
Retired Curmudgeon
admranger's Avatar
United_States
2982
Rep
4,046
Posts

Drives: ‘19 X3M40i, ‘18 m550i
Join Date: May 2011
Location: Las Vegas, NV

iTrader: (1)

Quote:
Originally Posted by OG Shark View Post
So just how long is the not fully healed from knee surgery excuse good for? Looks like I’m headed there again late summer - would be nice to know how long I can run that excuse afterwards before having to find a new one.
A month after arthroscopic is where I was at. Taught classroom session b/c I couldn't brace myself in the car for long periods. Ximian's response was proper, of course. I hate it when the Dr. cheaps out and doesn't use the red gel loctite on the screws.
__________________

'19 X3 M40 Carbon Black/Oyster, '23 Jeep Grand Cherokee L Summit, Past BMWs: '18 M550i, '18 330 GT, '16 X5 40e, '11 E90M3, '06 X5 4.4, '03 330i ZHP, '02 M3, '97 Z3 2.8, '95 M3 (2x), '94 530i (manual), '92 525i (manual), '88 M3, '87 325iS

Last edited by admranger; 07-01-2020 at 08:58 PM..
Appreciate 0
      07-01-2020, 08:56 PM   #12885
admranger
Retired Curmudgeon
admranger's Avatar
United_States
2982
Rep
4,046
Posts

Drives: ‘19 X3M40i, ‘18 m550i
Join Date: May 2011
Location: Las Vegas, NV

iTrader: (1)

Quote:
Originally Posted by kayha12 View Post


Here’s my fast lap at summit main. And yeah you can tell when I try to ease into the throttle it hits too hard and I back out of it. If you look closely enough the grip does not like this either haha I’m going to have it turned off moving forward
That's properly quick. I've only done the Summit Point main track once (and then I got transferred...). That down hill right hand kink always caused my seat leather to gather. Turn 9 is supposed to be the bad turn but it was super easy (maybe I was too slow...lol). I admit I was conservative as I hadn't been on track for a couple years but I hung with the A group and eventually was running with some of the non-heavily modded "fast guys". Fun track.
__________________

'19 X3 M40 Carbon Black/Oyster, '23 Jeep Grand Cherokee L Summit, Past BMWs: '18 M550i, '18 330 GT, '16 X5 40e, '11 E90M3, '06 X5 4.4, '03 330i ZHP, '02 M3, '97 Z3 2.8, '95 M3 (2x), '94 530i (manual), '92 525i (manual), '88 M3, '87 325iS
Appreciate 0
      07-01-2020, 09:16 PM   #12886
kayha12
Second Lieutenant
kayha12's Avatar
331
Rep
285
Posts

Drives: M3
Join Date: Mar 2018
Location: Frederick, MD

iTrader: (1)

Quote:
Originally Posted by admranger View Post
That's properly quick. I've only done the Summit Point main track once (and then I got transferred...). That down hill right hand kink always caused my seat leather to gather. Turn 9 is supposed to be the bad turn but it was super easy (maybe I was too slow...lol). I admit I was conservative as I hadn't been on track for a couple years but I hung with the A group and eventually was running with some of the non-heavily modded "fast guys". Fun track.
Thanks for the kind words! This is my "hometown" track and I can easily say once you're into the lower 1:20s, finding time becomes much harder! You really begin to push those brake zones, and need to up those cornering speeds by quite a bit. But I agree, it's a fun track
__________________
NASA Mid Atlantic - TT3 #97
'12 E92 M3 ZCP
Sponsored by Andrewtech Automotive
Appreciate 0
      07-01-2020, 09:29 PM   #12887
turbo_joe
Lieutenant Colonel
turbo_joe's Avatar
1590
Rep
1,578
Posts

Drives: 2012 M3 Coupe
Join Date: Jul 2015
Location: SOMD

iTrader: (2)

Quote:
Originally Posted by kayha12 View Post
I added a pretty big splitter since my last time at Summit and only lost about 2 mph on the front straight, however after reviewing data with other drivers... everyone lost max mph in all sectors since we were all comparing our laps from November. The heat will kill your power/max mph more than aero

Unless you have your wing set to an aggressive angle it shouldn't rob your top speed by much.
I have my wing at a very non aggressive angle right now. Good to know about not losing much speed. Looking forward to comparing my data. Last time I was there was late August 2019, also crazy hot and this weekend looks not to much different
Appreciate 0
      07-02-2020, 05:44 AM   #12888
ThunderMoose
Lieutenant Colonel
744
Rep
1,848
Posts

Drives: PY E46 M3 and SG E46 M3
Join Date: Aug 2010
Location: League City, TX

iTrader: (0)

Quote:
Originally Posted by kayha12 View Post
Quote:
Originally Posted by admranger View Post
That's properly quick. I've only done the Summit Point main track once (and then I got transferred...). That down hill right hand kink always caused my seat leather to gather. Turn 9 is supposed to be the bad turn but it was super easy (maybe I was too slow...lol). I admit I was conservative as I hadn't been on track for a couple years but I hung with the A group and eventually was running with some of the non-heavily modded "fast guys". Fun track.
Thanks for the kind words! This is my "hometown" track and I can easily say once you're into the lower 1:20s, finding time becomes much harder! You really begin to push those brake zones, and need to up those cornering speeds by quite a bit. But I agree, it's a fun track
I was looking at records and Roberto Crescencio had a 1:16 in ST3 trim. How is that even possible?
Appreciate 0
      07-02-2020, 07:04 AM   #12889
turbo_joe
Lieutenant Colonel
turbo_joe's Avatar
1590
Rep
1,578
Posts

Drives: 2012 M3 Coupe
Join Date: Jul 2015
Location: SOMD

iTrader: (2)

Quote:
Originally Posted by ThunderMoose View Post
I was looking at records and Roberto Crescencio had a 1:16 in ST3 trim. How is that even possible?
That is hauling ass, my buddy runs with CCS/WERA expert with his R6 at a 1:15 but thats a fully prepped race bike
__________________
Appreciate 0
      07-02-2020, 07:08 AM   #12890
roastbeef
Lieutenant General
roastbeef's Avatar
United_States
11572
Rep
12,711
Posts

Drives: E92 M3
Join Date: Nov 2010
Location: Orange County, CA

iTrader: (4)

figured i'd ask in here in case anyone that tows can offer some insight... anyone use these tires? we don't see snow, but the wet performance is supposed to be great.

https://www.tirerack.com/tires/tires...cleSearch=true
__________________
Instagram; @roastbeefmike
Appreciate 0
      07-02-2020, 08:50 AM   #12891
CorruptCommie
First Lieutenant
346
Rep
396
Posts

Drives: 2011 X5d
Join Date: May 2014
Location: Cincinnati, OH

iTrader: (0)

Quote:
Originally Posted by roastbeef View Post
figured i'd ask in here in case anyone that tows can offer some insight... anyone use these tires? we don't see snow, but the wet performance is supposed to be great.

https://www.tirerack.com/tires/tires...cleSearch=true
I just run Conti DWS on the X5d, we don't get any snow here either.
__________________
Appreciate 1
roastbeef11571.50
      07-02-2020, 09:02 AM   #12892
dparm
Stop the hate, get a V8
dparm's Avatar
United_States
3848
Rep
8,625
Posts

Drives: C7 Corvette GS, AMG C63 S
Join Date: Jun 2013
Location: Frisco, TX

iTrader: (1)

Quote:
Originally Posted by roastbeef View Post
figured i'd ask in here in case anyone that tows can offer some insight... anyone use these tires? we don't see snow, but the wet performance is supposed to be great.

https://www.tirerack.com/tires/tires...cleSearch=true



When I see a UTQG above 200:
Attached Images
 
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP
Appreciate 2
roastbeef11571.50
kyippee1072.00
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 09:03 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, 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