BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Today's Posts


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques
 
Post Reply
 
Thread Tools Search this Thread
      08-24-2018, 01:33 PM   #881
sgreer78
Private First Class
sgreer78's Avatar
United_States
43
Rep
180
Posts

Drives: 2016 Cayman GT4
Join Date: Jan 2018
Location: St Louis

iTrader: (3)

Quote:
Originally Posted by Tommysalami View Post
Thanks for the pic, it looks pretty pinched. I'll try 275s and see how the car's balance feels through the season and maybe just go with 285s in the rear if the car feels loose.
I've never been able to make the car loose, and I run the bar soft. Granted I came from an STS CRX, so my interpretation of loose may be different than others.
Appreciate 0
      08-24-2018, 06:32 PM   #882
SkysTheLimit
Mspired
186
Rep
346
Posts

Drives: '04 E46 M3 Coupe
Join Date: Jun 2010
Location: Bergen NJ

iTrader: (1)

Quote:
Originally Posted by Tommysalami View Post
Thanks for the pic, it looks pretty pinched. I'll try 275s and see how the car's balance feels through the season and maybe just go with 285s in the rear if the car feels loose.
285 rears present a different challenge - you run out of gear pretty easily
__________________
..: 2004 E46 M3 Coupe 6MT CB/B
..: 2011.5 E90 M3 Sedan 6MT ZCP Slicktop JB/Speed Cloth
::: >E90 ZCP Build Thread
Gone but not forgotten: 2011.5 E90 M3 ZCP DCT, 2007 E92 335i, 2006 E90 325i, 1998 E36 M3, 1999 E36 323is
Appreciate 0
      08-25-2018, 10:22 PM   #883
Richbot
Major General
2759
Rep
5,484
Posts

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

iTrader: (5)

Quote:
Originally Posted by sgreer78 View Post
...my interpretation of loose may be different than others.
can confirm
Appreciate 0
      08-26-2018, 06:34 AM   #884
z3papa
Captain
United_States
190
Rep
969
Posts

Drives: 11 E92 M3 ZCP, 07 335i
Join Date: Oct 2009
Location: Bloomington IL

iTrader: (2)

Quote:
Originally Posted by Tommysalami View Post
Thanks for the pic, it looks pretty pinched. I'll try 275s and see how the car's balance feels through the season and maybe just go with 285s in the rear if the car feels loose.
I did not fell the tire was overly pinched up front but did feel the loss of sidewall gave some of the suspension compliance over imperfections. (I'll scan and post a picture of my car on course last year to illustrate). As for the rears, I did think I gave up enough at the top of 2nd to impact me negatively (dragged the limiter -- esp. on West course finish) as there was no good location to smoothly go to 3rd. A .6 sec over 2 days would have pushed me from 12th (still trophy) to 6th. Obviously, Bucki figured out how to get it to 3rd on day 2 as he was on this setup.
__________________
Sold 2011.5 E92 M3 ZCP.
Appreciate 0
      08-26-2018, 09:12 AM   #885
Tommysalami
Lieutenant
Tommysalami's Avatar
564
Rep
465
Posts

Drives: E92 M3
Join Date: Jun 2018
Location: Socal

iTrader: (1)

Quote:
Originally Posted by z3papa View Post
I did not fell the tire was overly pinched up front but did feel the loss of sidewall gave some of the suspension compliance over imperfections. (I'll scan and post a picture of my car on course last year to illustrate). As for the rears, I did think I gave up enough at the top of 2nd to impact me negatively (dragged the limiter -- esp. on West course finish) as there was no good location to smoothly go to 3rd. A .6 sec over 2 days would have pushed me from 12th (still trophy) to 6th. Obviously, Bucki figured out how to get it to 3rd on day 2 as he was on this setup.
I have a DCT so shifting isn't something I'm as worried about. From videos, it looks like only the very end of the course was where FS cars were hitting the limiter. I've never been to nats, so is that usually the case with how they design their courses?

Top speed in 2nd with 275s should be what, 68, compared to 66 with 285s?

On another note the FS prepped M3 I've driven prior to buying my car had square 275s and the balance and response felt real nice
Appreciate 0
      08-26-2018, 09:51 AM   #886
z3papa
Captain
United_States
190
Rep
969
Posts

Drives: 11 E92 M3 ZCP, 07 335i
Join Date: Oct 2009
Location: Bloomington IL

iTrader: (2)

Here's the photo.
__________________
Sold 2011.5 E92 M3 ZCP.

Last edited by z3papa; 08-28-2018 at 07:55 AM..
Appreciate 0
      08-29-2018, 03:38 PM   #887
z3papa
Captain
United_States
190
Rep
969
Posts

Drives: 11 E92 M3 ZCP, 07 335i
Join Date: Oct 2009
Location: Bloomington IL

iTrader: (2)

Quote:
Originally Posted by Tommysalami View Post
I have a DCT so shifting isn't something I'm as worried about. From videos, it looks like only the very end of the course was where FS cars were hitting the limiter. I've never been to nats, so is that usually the case with how they design their courses?

Top speed in 2nd with 275s should be what, 68, compared to 66 with 285s?

On another note the FS prepped M3 I've driven prior to buying my car had square 275s and the balance and response felt real nice
The delta is more like 3 mph than 2 mph. On a DCT, I'd shift away provided it does not unsettle the car and not be concerned.
__________________
Sold 2011.5 E92 M3 ZCP.
Appreciate 0
      08-29-2018, 04:42 PM   #888
sgreer78
Private First Class
sgreer78's Avatar
United_States
43
Rep
180
Posts

Drives: 2016 Cayman GT4
Join Date: Jan 2018
Location: St Louis

iTrader: (3)

Top of 2nd is closer to 64-65 on 275's according to solostorm.
Appreciate 1
      08-30-2018, 10:16 AM   #889
Richbot
Major General
2759
Rep
5,484
Posts

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

iTrader: (5)

Yeah you never really get 8400 in real life
__________________
Appreciate 0
      09-04-2018, 11:46 AM   #890
Richbot
Major General
2759
Rep
5,484
Posts

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

iTrader: (5)

Good luck ladies and gentlemen
Appreciate 1
      09-04-2018, 12:13 PM   #891
SkysTheLimit
Mspired
186
Rep
346
Posts

Drives: '04 E46 M3 Coupe
Join Date: Jun 2010
Location: Bergen NJ

iTrader: (1)

Good luck everyone! Looking forward to meeting some of you out there.

Can we get a roll call going? 1/3 of the entries this year are M3's, albeit some being co-driven.
__________________
..: 2004 E46 M3 Coupe 6MT CB/B
..: 2011.5 E90 M3 Sedan 6MT ZCP Slicktop JB/Speed Cloth
::: >E90 ZCP Build Thread
Gone but not forgotten: 2011.5 E90 M3 ZCP DCT, 2007 E92 335i, 2006 E90 325i, 1998 E36 M3, 1999 E36 323is
Appreciate 0
      09-04-2018, 12:54 PM   #892
CSBM5
Brigadier General
CSBM5's Avatar
2717
Rep
3,329
Posts

Drives: 2019 M2 Comp, 2011 M3, etc
Join Date: Nov 2005
Location: Greenville, SC

iTrader: (2)

Wow, just saw this video from A-street today. Literal waves coming off the tires. I wonder what tires work best in monsoon conditions like these. https://www.youtube.com/watch?v=c17elG6J5Zo
__________________
Current Stable:
2024 G20 M340i Melbourne Red/Cognac
2019 F87 M2 Competition 6MT, LBB, slicktop, exec pkg
2007 E91 328i Silver, slushbox, Eibach fr/E93 M3 rear sway bars, ARC-8
Appreciate 0
      09-04-2018, 12:54 PM   #893
thasuperdude
Private First Class
thasuperdude's Avatar
United_States
104
Rep
104
Posts

Drives: 2009 E90 M3
Join Date: Dec 2014
Location: Atlanta, GA

iTrader: (0)

SCCA Live Timing

You can see live timing and listen to the announcers call the event. FS runs Thursday/Friday.

http://sololive.scca.com/
__________________
Randy W.
'19 S550 Mustang GT PP1 DD/Auto-X
Appreciate 0
      09-04-2018, 01:05 PM   #894
The Nebulizer
Private First Class
The Nebulizer's Avatar
23
Rep
109
Posts

Drives: e90ZCP M3 & e46 M3 (slicktops)
Join Date: Jan 2015
Location: St. Louis

iTrader: (0)

Toying with bringing my e46 M3 instead. Last time I ran it in rain of this sort, it was the better car (though not so in the dry) - perhaps the weight advantage? I'll be watching the weather forecasts before making my decision tonight about which car to load up. One thing to consider is I am not in the trophy hunt given a level playing field, so maybe doing something oddball could benefit me in some way - if it hurts, no big deal really.

Any thoughts?
Appreciate 0
      09-04-2018, 01:11 PM   #895
thasuperdude
Private First Class
thasuperdude's Avatar
United_States
104
Rep
104
Posts

Drives: 2009 E90 M3
Join Date: Dec 2014
Location: Atlanta, GA

iTrader: (0)

In the Atlanta region, Tim Smith (National Title winner) was always faster in his e46 than in my e90. The extra HP/TQU made it harder to exit corners, it takes more finesse with the throttle. So if it as nasty later in the week, the lighter lower HP car might have an advantage.
__________________
Randy W.
'19 S550 Mustang GT PP1 DD/Auto-X
Appreciate 0
      09-04-2018, 02:06 PM   #896
Richbot
Major General
2759
Rep
5,484
Posts

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

iTrader: (5)

Lower HP, lighter but with lots of iron on top of a narrower front contact patch!

Longer heavier spinning crankshaft = better yaw resistance thanks to conservation of angular momentum!
Appreciate 0
      09-06-2018, 04:27 PM   #897
kyoo
Captain
341
Rep
744
Posts

Drives: Evo
Join Date: Feb 2010
Location: USA

iTrader: (0)

any consideration of running 275/40-18 nexens in the future by anyone? in at least the rear?
Appreciate 0
      09-07-2018, 08:55 AM   #898
Richbot
Major General
2759
Rep
5,484
Posts

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

iTrader: (5)

Dramallamadingdong

But Shewauwn greer is in the race for best of the rest of the non-Jeffs. All it takes is a couple small mistakes and he's right derr. Hope weather is good and doesn't screw everyone and make it uneven, that's the worst

Woop go get em

Quote:
Originally Posted by kyoo View Post
any consideration of running 275/40-18 nexens in the future by anyone? in at least the rear?
Isn't that the "drift" compound? Just in that size? Or am I thinking of something else like the maxxis or federal? I remember somebody getting excited about one of these recently becaues it was like $150 instead of $225 and that was why
__________________

Last edited by Richbot; 09-07-2018 at 09:02 AM..
Appreciate 0
      09-07-2018, 03:00 PM   #899
Richbot
Major General
2759
Rep
5,484
Posts

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

iTrader: (5)

P1,p4,p7 in the trophies nice work all
Appreciate 1
CSBM52716.50
      09-07-2018, 03:05 PM   #900
CSBM5
Brigadier General
CSBM5's Avatar
2717
Rep
3,329
Posts

Drives: 2019 M2 Comp, 2011 M3, etc
Join Date: Nov 2005
Location: Greenville, SC

iTrader: (2)

Also in B-street...great battle there for 1st between 1M and M2, 0.006! First three spots: 1M, M2, M2.
__________________
Current Stable:
2024 G20 M340i Melbourne Red/Cognac
2019 F87 M2 Competition 6MT, LBB, slicktop, exec pkg
2007 E91 328i Silver, slushbox, Eibach fr/E93 M3 rear sway bars, ARC-8
Appreciate 0
      09-07-2018, 03:30 PM   #901
Richbot
Major General
2759
Rep
5,484
Posts

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

iTrader: (5)

And DSP clawed back for BMW too in the rain, RX8 leading after day 1, last year's winner and his co-driver split the podium with her in 2nd on day 2. Good work all around from fragile old BMW's
__________________
Appreciate 0
      09-08-2018, 09:20 AM   #902
Tommysalami
Lieutenant
Tommysalami's Avatar
564
Rep
465
Posts

Drives: E92 M3
Join Date: Jun 2018
Location: Socal

iTrader: (1)

why DNS on Jeff's third runs both days?
Appreciate 0
Post Reply

Bookmarks


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 06:53 PM.




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