BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E46 M3 (2001-2006)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


Reply
 
Thread Tools Display Modes
Old Tue, Sep-18-2018, 11:35:37 PM   #11
M spec
Rembrandt Audio
 
Join Date: Jan 2018
Posts: 710
Reputation: 0 M spec is on a distinguished road
Location: Irvine, CA

Austria




Default Re: Mk20 “ice mode” on track

Quote:
Originally Posted by CrookedCommie View Post
Huh? Ice mode? You need to turn off DSC. Never had this happen with DSC off.
Actually, it happens with it off, too. Regrettably the work required to convert to MK60 is a PITA
Jump to top M spec is online now   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Tue, Sep-18-2018, 11:39:20 PM   #12
Sandeep1212
Registered User
 
Sandeep1212's Avatar
 
Join Date: Oct 2011
Posts: 3,038
In the garage:
Reputation: 0 Sandeep1212 is on a distinguished road
Location: Toronto

Canada




Default Re: Mk20 “ice mode” on track

Quote:
Originally Posted by bigjae1976 View Post
I guess my question is what’s the theory behind the car being the limitation? Is the ABS too sensitive?
Yea the mk20 is overly sensitive compared to the mk60 under threshold braking.
__________________


2003.5 TIAG Black 6MT Gone
2003.5 Carbon Black Laguna Seca Blue SMG Current
Supersprint V1/Supersprint straight pipe sec 1/ Supersprint X-pipe/OEM Muffler/Eventuri Intake/TCKline Single Adjustable/TCKline Camber Plates/TMS Adjustable Rear Control Arm/Powerflex Black RTABs/Turner Delrin FCABS/ Brembo GT 6 pot F 4 Pot R/OEM CSL Trunk/ SGT 1 piece lip
Jump to top Sandeep1212 is offline   Reply With Quote
Old Tue, Sep-18-2018, 11:39:37 PM   #13
Drewster
Registered User
 
Drewster's Avatar
 
Join Date: Aug 2014
Posts: 3,064
In the garage:
Reputation: 0 Drewster is on a distinguished road

United States




Default Re: Mk20 “ice mode” on track

Quote:
Originally Posted by bigjae1976 View Post
I guess my question is what’s the theory behind the car being the limitation? Is the ABS too sensitive?
My understanding is that ice mode usually just feels like the OP described - where you would normally get ABS engagement (sort of a "grinding" pedal feel as the motors modulate brake pressure), you instead just get a hard pedal, not much actual braking, and you either pulse it, try and ride it out, or don't brake at the limit.

Usually this comes up when you're running something like slicks or going over transitions where (as I understand) the wheelspeed decreases so quickly that the ABS module thinks there's zero traction and changes the modulation pattern under the assumption you're on ice.. sounds like the Mk20 is fast to jump to that conclusion
Jump to top Drewster is offline   Reply With Quote
Old Wed, Sep-19-2018, 12:14:52 AM   #14
bigjae1976
Registered User
 
Join Date: Nov 2008
Posts: 6,794
In the garage:
Reputation: 0 bigjae1976 is on a distinguished road
Location: Wichita

United States




Default Re: Mk20 “ice mode” on track

Quote:
Originally Posted by Sandeep1212 View Post
Yea the mk20 is overly sensitive compared to the mk60 under threshold braking.

That makes sense...thanks!


Sent from my iPhone using Tapatalk
__________________
2013 F30 328i - Melbourne Red
2011 E90 M3 - Monte Carlo Blue
2004 E46 M3 - Imola Red
Jump to top bigjae1976 is online now   Reply With Quote
Old Wed, Sep-19-2018, 01:33:34 AM   #15
CrookedCommie
Captain Slow
 
CrookedCommie's Avatar
 
Join Date: Aug 2014
Posts: 1,430
In the garage:
Reputation: 0 CrookedCommie is on a distinguished road
Location: Cincinnati

Bulgaria




Default Re: Mk20 “ice mode” on track

Weird, I was running Pirelli DH's this weekend at MO. I'm on DTC-60's and I could overwhelm the brakes very easily. If I kept about medium brake pressure through the whole brake zone, that worked. If I tried to do threshold braking, the car would get all squirly and then I would have a soft pedal at the end of the brake zone.

I think the answer is BBK. I'm SO done with trying not to die lap after lap with these stock calipers. I am NOT a pro coach and could very well be me f*cking up...
Jump to top CrookedCommie is online now   Reply With Quote
Old Wed, Sep-19-2018, 01:52:52 AM   #16
Apex_3472
Registered User
 
Join Date: Nov 2015
Posts: 405
In the garage:
Reputation: 0 Apex_3472 is on a distinguished road

United States




Default Re: Mk20 “ice mode” on track

Quote:
Originally Posted by CrookedCommie View Post
Weird, I was running Pirelli DH's this weekend at MO. I'm on DTC-60's and I could overwhelm the brakes very easily. If I kept about medium brake pressure through the whole brake zone, that worked. If I tried to do threshold braking, the car would get all squirly and then I would have a soft pedal at the end of the brake zone.

I think the answer is BBK. I'm SO done with trying not to die lap after lap with these stock calipers. I am NOT a pro coach and could very well be me f*cking up...
In my opinion it doesn't matter what pads/fluid you're on, once you step up to slicks the stock calipers/rotors no longer cut it. So much extra heat is being built because of the extra braking power provided by the grip of the slicks.

Side note - the car getting squirly under braking sounds like a bias issue. Either that or the car is unloading the back too rapidly when the extra braking power is used.
__________________
oi64.tinycom/j9rkb4.jpgpic.
Jump to top Apex_3472 is offline   Reply With Quote
Old Wed, Sep-19-2018, 01:54:47 AM   #17
Apex_3472
Registered User
 
Join Date: Nov 2015
Posts: 405
In the garage:
Reputation: 0 Apex_3472 is on a distinguished road

United States




Default Re: Mk20 “ice mode” on track

Quote:
Originally Posted by bigjae1976 View Post
That makes sense...thanks!


Sent from my iPhone using Tapatalk
That was my general thought, that no locking would actually occur without ABS. However the car thinks locking would occur because, lets be honest, the abs is designed for semi-spirited driving at best. It doesn't know how to compensate for a BBK and Pirelli slicks.
__________________
oi64.tinycom/j9rkb4.jpgpic.
Jump to top Apex_3472 is offline   Reply With Quote
Old Wed, Sep-19-2018, 01:56:17 AM   #18
CrookedCommie
Captain Slow
 
CrookedCommie's Avatar
 
Join Date: Aug 2014
Posts: 1,430
In the garage:
Reputation: 0 CrookedCommie is on a distinguished road
Location: Cincinnati

Bulgaria




Default Re: Mk20 “ice mode” on track

Are you on a BBK?
Jump to top CrookedCommie is online now   Reply With Quote
Old Wed, Sep-19-2018, 02:12:17 AM   #19
Apex_3472
Registered User
 
Join Date: Nov 2015
Posts: 405
In the garage:
Reputation: 0 Apex_3472 is on a distinguished road

United States




Default Re: Mk20 “ice mode” on track

Quote:
Originally Posted by CrookedCommie View Post
Are you on a BBK?
Yes - Brembo 355 front 345 rear
__________________
oi64.tinycom/j9rkb4.jpgpic.
Jump to top Apex_3472 is offline   Reply With Quote
Old Wed, Sep-19-2018, 02:20:44 AM   #20
CrookedCommie
Captain Slow
 
CrookedCommie's Avatar
 
Join Date: Aug 2014
Posts: 1,430
In the garage:
Reputation: 0 CrookedCommie is on a distinguished road
Location: Cincinnati

Bulgaria




Default Re: Mk20 “ice mode” on track

Oh great, so my plan on dropping $$$$ for the AP kit still won't fix the brakes? I love this car

Quote:
Originally Posted by Apex_3472 View Post
Side note - the car getting squirly under braking sounds like a bias issue. Either that or the car is unloading the back too rapidly when the extra braking power is used.
I'm running 700/800 spring rate... so is it a shock thing? Do I need to turn up compression or rebound?
Jump to top CrookedCommie is online now   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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. The time now is 06:59:21 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright ©1999-2017 M3Forum.com
Discussing Mk20 “ice mode” on track in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)