E90Post
 


Extreme Power House
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Ground Control/Stoptech/M3 arms DIY Install Completed!



Reply
 
Thread Tools Search this Thread
      12-19-2012, 06:18 PM   #45
nikitino25
Lieutenant
 
nikitino25's Avatar
 
Drives: '07 E92 335i
Join Date: Dec 2011
Location: Missouri

Posts: 493
iTrader: (1)

Alright, I'm sold......I'm going for all the gusto at once too, M3 arms, bushings, LSD; the works. Might as well do it all at once...
nikitino25 is offline   United_States
0
Reply With Quote
      12-20-2012, 05:25 PM   #46
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by nikitino25 View Post
Alright, I'm sold......I'm going for all the gusto at once too, M3 arms, bushings, LSD; the works. Might as well do it all at once...
Thats what I said. I know I'm not going to keep the car forever so I'm just doing everything I want to do so I can enjoy it while I have the car.
DallasBoosted is offline  
0
Reply With Quote
      12-19-2013, 12:19 PM   #47
Smooth 330i
Captain
 
Smooth 330i's Avatar
 
Drives: Sleepy 330i
Join Date: Sep 2011
Location: PA

Posts: 928
iTrader: (8)

Quote:
Originally Posted by DallasBoosted
Quote:
Originally Posted by nikitino25 View Post
Alright, I'm sold......I'm going for all the gusto at once too, M3 arms, bushings, LSD; the works. Might as well do it all at once...
Thats what I said. I know I'm not going to keep the car forever so I'm just doing everything I want to do so I can enjoy it while I have the car.
Hey Dallas, can you post a short summary about Stoptech? Pros/cons and what pads are you using for street and track. I am looking to get a set and would like to get your feedback. Thx
__________________

E90 330i Sport | JRZ RS1 | Dinan | Quaife | Evolve
M3 Bits | GC | Apex | Braile | Supersprint | Reccaro
Stoptech BBK | BMW Perf | Macht Schnell | Turner
Smooth 330i is online now  
0
Reply With Quote
      12-19-2013, 02:11 PM   #48
ashmostro
Lieutenant Colonel
 
ashmostro's Avatar
 
Drives: '13 335is DCT
Join Date: Jan 2013
Location: Vienna, VA

Posts: 1,510
iTrader: (7)

Quote:
Originally Posted by nitehawk View Post
+1 GC spring rates have never made sense to me...
Odd. I'm running 450/800 on my ASTs and find them totally comfortable as a DD and track rat dual-purpose machine.

Only thing about the OP's spring rates that surprises me is the ratio f to r.
__________________
2013 335is DCT -- Apex 17x9 ET30 + 255/40-17" Toyo R1R | Quaife LSD | JRZ RS1 - 450/800# | M3 + Hardrace arms | BMS CP + OCC | ETS 5" FMIC | AFE FBO | RB PCV | Setrab oil cooler | Stoptech f+r BBK | FF Self-Tune

ashmostro is offline   United_States
0
Reply With Quote
      12-19-2013, 02:13 PM   #49
ashmostro
Lieutenant Colonel
 
ashmostro's Avatar
 
Drives: '13 335is DCT
Join Date: Jan 2013
Location: Vienna, VA

Posts: 1,510
iTrader: (7)

Quote:
Originally Posted by TC Kline Racing View Post
OP, you have a nice looking set-up here. I would say your rear spring rate is 'spot on' but the fronts may be a little stiff. You may experience a 'pitching motion' when you go over bumps, like the car is wanting to rock back and forth and when you are at the limit, you will be more likely to have understeer with that stiff of a spring. Typically (for our suspension) the sweet spot for the front spring is anywhere between 300-400# front springs (even for taking the car to the track or autocross).

Not saying that your set-up is wrong, but it may be worth trying if have the opportunity
Agreed 100% with this. My 450 fronts might be 50# too stiff on my setup as I get slight pitching even with the heavy 800# rears. The front ends on our cars have a narrow sweet spot, IME.
__________________
2013 335is DCT -- Apex 17x9 ET30 + 255/40-17" Toyo R1R | Quaife LSD | JRZ RS1 - 450/800# | M3 + Hardrace arms | BMS CP + OCC | ETS 5" FMIC | AFE FBO | RB PCV | Setrab oil cooler | Stoptech f+r BBK | FF Self-Tune

ashmostro is offline   United_States
0
Reply With Quote
      12-19-2013, 04:12 PM   #50
GabeS
Crazy!
 
Drives: E93 M3/S14 SRT 10 viper swap
Join Date: Feb 2013
Location: Las Vegas

Posts: 396
iTrader: (0)

Quote:
Originally Posted by cvc 22349a View Post
LSD=#1 mod for 335i. If you're adding stiffer springs, increasing grip and/or torque I'd do the rear subframe bushings first otherwise the rear end will move and bounce all over the place.
Definitley go for the full lock or similar..
makes a hell of a difference..
__________________
335i coupe mtech rear bumper(white) for sale!!
$300
GabeS is offline  
0
Reply With Quote
      12-19-2013, 11:45 PM   #51
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by Smooth 330i
Quote:
Originally Posted by DallasBoosted
Quote:
Originally Posted by nikitino25 View Post
Alright, I'm sold......I'm going for all the gusto at once too, M3 arms, bushings, LSD; the works. Might as well do it all at once...
Thats what I said. I know I'm not going to keep the car forever so I'm just doing everything I want to do so I can enjoy it while I have the car.
Hey Dallas, can you post a short summary about Stoptech? Pros/cons and what pads are you using for street and track. I am looking to get a set and would like to get your feedback. Thx
The stoptech brakes are just good. They haven't given me any problems in ten or so track days now, i use motul 600 and speed bleeders so I just give it a quick 7-push bleed before each event. I use the stoptech street performance pads for street and PFC 06's for track. The only downside to the stoptechs is cost.
DallasBoosted is offline  
0
Reply With Quote
      12-19-2013, 11:47 PM   #52
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by ashmostro
Quote:
Originally Posted by TC Kline Racing View Post
OP, you have a nice looking set-up here. I would say your rear spring rate is 'spot on' but the fronts may be a little stiff. You may experience a 'pitching motion' when you go over bumps, like the car is wanting to rock back and forth and when you are at the limit, you will be more likely to have understeer with that stiff of a spring. Typically (for our suspension) the sweet spot for the front spring is anywhere between 300-400# front springs (even for taking the car to the track or autocross).

Not saying that your set-up is wrong, but it may be worth trying if have the opportunity
Agreed 100% with this. My 450 fronts might be 50# too stiff on my setup as I get slight pitching even with the heavy 800# rears. The front ends on our cars have a narrow sweet spot, IME.
My car definitely does generally understeer with these spring rates. I am going up to 800# rears next month and might drop down to 425 fronts after I see how the rear springs do.
DallasBoosted is offline  
0
Reply With Quote
      12-20-2013, 01:17 AM   #53
cvc 22349a
Colonel
 
cvc 22349a's Avatar
 
Drives: 335i
Join Date: Sep 2007
Location: SF Bay

Posts: 2,174
iTrader: (8)

Can the Konis dampen an 800 lb rear spring?
__________________
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, KW/GC/M3/Meyle susp, Apex Arc 8, Mich PSS
cvc 22349a is offline   United_States
0
Reply With Quote
      12-20-2013, 08:07 AM   #54
DallasBoosted
Captain
 
DallasBoosted's Avatar
 
Drives: '08 E92 335i
Join Date: Apr 2012
Location: Dallas

Posts: 864
iTrader: (3)

Garage List
2008 BMW 335i  [5.00]
Quote:
Originally Posted by cvc 22349a
Can the Konis dampen an 800 lb rear spring?
Guess I will find out.
DallasBoosted is offline  
0
Reply With Quote
      12-24-2013, 12:54 PM   #55
TheAxiom
Dyno whore
 
Drives: E90 6Spd ZSP
Join Date: Nov 2013
Location: Tampa Florida

Posts: 1,221
iTrader: (1)

Quote:
Originally Posted by TC Kline Racing View Post
Actually, I would suggest 1/16" toe in for the front and 1/8" toe in for the rear. Also the rear camber is a little much. You will be fine with -1.5 to -2.0 at the most in the rear.
saving this for later.
TheAxiom is offline   United_States
0
Reply With Quote
      12-24-2013, 01:07 PM   #56
ashmostro
Lieutenant Colonel
 
ashmostro's Avatar
 
Drives: '13 335is DCT
Join Date: Jan 2013
Location: Vienna, VA

Posts: 1,510
iTrader: (7)

Quote:
Originally Posted by cvc 22349a View Post
Can the Konis dampen an 800 lb rear spring?
I think unmodified konis can handle up to 700#
ashmostro is offline   United_States
0
Reply With Quote
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
Forum Jump


All times are GMT -5. The time now is 05:40 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, 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