E90Post
 


GT Haus
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > H & R Springs sport or race?



Reply
 
Thread Tools Search this Thread
      09-03-2009, 05:48 PM   #1
m3kerry
SCCA STU
 
m3kerry's Avatar
 
Drives: 335i Dinan stage 2 / 1 M
Join Date: Mar 2009
Location: Little Rock

Posts: 603
iTrader: (0)

H & R Springs sport or race?

I just bought a used 335i and plan to use it as a daily driver with some autox on r-comps (I plan to use my takeoffs from my Shelby). Has anyone installed and autocrossed the race springs that drop the car 2.0 in the front and 1.5 in the rear?

I am wondering if there is enough spring to hold the car off of the tires.














Here is a link to my website do give an idea of my experience at autox:

www.autocrosstraining.com
__________________
Thanks to: Hixson BMW, Race-Keeper, Koni, BimmerHaus, & Hoosier
2012 SUMMER NATIONALS SCCA PRO-SOLO BONUS CHALLENGE WINNER
2012 SUMMER NATIONALS SCCA PRO-SOLO A STOCK CHAMPION
2012 SCCA DIXIE A STOCK CHAMPION
www.facebook.com/thatsrightracing
m3kerry is offline   United_States
0
Reply With Quote
      09-03-2009, 05:54 PM   #2
Enjoiyourlife
Sensei
 
Enjoiyourlife's Avatar
 
Drives: E92 335i
Join Date: Mar 2008
Location: San Diego

Posts: 1,053
iTrader: (3)

are you planning on using ZSP struts? I would probably grab some coils if I were you, especially if you plan to autox. HR Sport/Koni Yellow combo seems to be a cheaper alternative with adequate handling capabilities while maintaining daily driveability. I'm not sure about Race, but I do know that you def need new struts to autox effectively with HR Race springs.
__________________
Enjoiyourlife is offline  
0
Reply With Quote
      09-03-2009, 06:03 PM   #3
m3kerry
SCCA STU
 
m3kerry's Avatar
 
Drives: 335i Dinan stage 2 / 1 M
Join Date: Mar 2009
Location: Little Rock

Posts: 603
iTrader: (0)

The car is going to be a daily driver for the most part. I have a 2007 shelby that has won one of the pro-solo tour stops as a primary autox car:

http://www.myscca.com/community/vide...videoId=M0NDgw

My goals for the 335i are to lower it and make up for the spring rates that were for runflats not high performance street tires (softer sidewall).
__________________
Thanks to: Hixson BMW, Race-Keeper, Koni, BimmerHaus, & Hoosier
2012 SUMMER NATIONALS SCCA PRO-SOLO BONUS CHALLENGE WINNER
2012 SUMMER NATIONALS SCCA PRO-SOLO A STOCK CHAMPION
2012 SCCA DIXIE A STOCK CHAMPION
www.facebook.com/thatsrightracing
m3kerry is offline   United_States
0
Reply With Quote
      09-03-2009, 10:27 PM   #4
ToadHollow
Once upon a time ......
 
ToadHollow's Avatar
 
Drives: 2008 JB E92 - SOLD 5/2010
Join Date: Sep 2008
Location: Asti, Italy & Austin, Texas

Posts: 5,060
iTrader: (16)

Garage List
2008 E92 335i  [4.00]
Send a message via MSN to ToadHollow
I settled on the H&R race springs w/ Koni FSD shocks. Ride is very good considering how stiff the springs are. No rubbing issues either.

The springs combined with the aftermarket sways really have the car handling as if it were on rails.
__________________



ToadHollow is offline   Italy
0
Reply With Quote
      09-04-2009, 05:33 AM   #5
SV Concepts III
Lieutenant General
 
Drives: BMW Duh
Join Date: Apr 2005
Location: Santa Clara

Posts: 17,022
iTrader: (13)

Send a message via AIM to SV Concepts III
H&R Sports are a good upgrade if you are DDing the car and want something stiffer yet comfortable. I do suggest replacing the shocks as well so you do not wear them prematurely. Your best option would be the H&R Cup Kit which pairs H&R Springs and Shocks together for a complete setup.
SV Concepts III is offline  
0
Reply With Quote
      09-04-2009, 06:29 AM   #6
R1200RT
R1200RT
 
R1200RT's Avatar
 
Drives: BMW 335d (E90)
Join Date: Jul 2009
Location: The Netherlands

Posts: 115
iTrader: (0)

Garage List
2009 R1200RT  [0.00]
2009 E90  [0.00]
I had a totally different expectation of autocross including dirt and bumps and so on, before I looked at the links. Love the Cobra sound. It stays rather flat too. Must be fun to drive.

There are a few threads that include lists of several types of suspension with there characteristics on E90Post.

I am obviously no expert, but if I were you and having seen the links, I would start off with:
1) LSD f.i. Quaife.
2) Different ARB's (swaybars), f.i. Hartge.
3) Springs (they seem less important than the LSD and ARB's for autocross given the smooth tarmac)
__________________
335d E90
R1200RT K&N/Power FRK/black cylinder heads/Corbin /BMW Navigator IV/Baehr
R1200RT is offline   Netherlands
0
Reply With Quote
      09-04-2009, 08:05 AM   #7
m3kerry
SCCA STU
 
m3kerry's Avatar
 
Drives: 335i Dinan stage 2 / 1 M
Join Date: Mar 2009
Location: Little Rock

Posts: 603
iTrader: (0)

This is going to be a daily driver that I will run ever now and then. The r-comp takeoffs from the Shelby will go on the 335i. The thing about running r-comps on a completely stock car is you run the risk of body roll getting all the way to the tire. The tire will get some damage but the car can too. I have seen r-comp on stock setups bend fenders. This is what I would like to avoid.

So, my thought is just some sport springs with the ~1.2 inch drop. Anyone know what the stock spring rates are on the 335 sport? What are the spring rates on a set of the H & R sport springs?

Thoughts?
__________________
Thanks to: Hixson BMW, Race-Keeper, Koni, BimmerHaus, & Hoosier
2012 SUMMER NATIONALS SCCA PRO-SOLO BONUS CHALLENGE WINNER
2012 SUMMER NATIONALS SCCA PRO-SOLO A STOCK CHAMPION
2012 SCCA DIXIE A STOCK CHAMPION
www.facebook.com/thatsrightracing
m3kerry is offline   United_States
0
Reply With Quote
      09-04-2009, 09:03 AM   #8
Delta0311
Brigadier General
 
Delta0311's Avatar
 
Drives: 2011 BMW 335xi E92
Join Date: Apr 2009
Location: NJ

Posts: 3,399
iTrader: (1)

I got a H&R Touring cup kit, which comes with sports springs. I love the drop but I got to say that the car is freaking LOW at this point. I'm glad that I did not go with race springs or else I'd never be able to park in a driveway. If your car will be a daily driver than I would stay away from race springs if I were you.
Delta0311 is offline  
0
Reply With Quote
      09-04-2009, 10:06 AM   #9
ECSTuning
BimmerPost Supporting Vendor

 
ECSTuning's Avatar
 
Drives: Independent Tuning Specialists
Join Date: Jul 2008
Location: Ohio

Posts: 4,534
iTrader: (18)

Send a message via AIM to ECSTuning
The Sports will probably be a bit more suited for a daily driver, but the Race may work just fine if you are used to / ok with a fairly firm ride.

The H&R's combined with the Koni Yellow shocks offer a great setup:

http://www.ecstuning.com/BMW-E92-335...aign=postreply
__________________

Have questions? Need answers? Live Chat us! 8:30am to 12:00am Midnight EST
sales@ecstuning.com | customerservice@ecstuning.com
Customer Service Hours: M - F 8:00am - 8:00pm EST | Saturday: 10:00am - 7:00pm EST
Sales Team Hours: M - F 8:00am - 11:00pm EST | Saturday: 10:00am - 7:00pm EST
Do you love surveys? Click HERE to take our Customer Satisfaction Survey!
ECSTuning is offline   United_States
0
Reply With Quote
      09-04-2009, 10:50 AM   #10
R1200RT
R1200RT
 
R1200RT's Avatar
 
Drives: BMW 335d (E90)
Join Date: Jul 2009
Location: The Netherlands

Posts: 115
iTrader: (0)

Garage List
2009 R1200RT  [0.00]
2009 E90  [0.00]
See thread http://www.e90post.com/forums/showthread.php?t=613

Maybe send MarkE90M3 a PM. He seems to have made a study on the topic.

Or send Craig@SupremePower a PM see http://www.e90post.com/forums/showthread.php?t=122383
__________________
335d E90
R1200RT K&N/Power FRK/black cylinder heads/Corbin /BMW Navigator IV/Baehr

Last edited by R1200RT; 09-04-2009 at 11:10 AM. Reason: addition
R1200RT is offline   Netherlands
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 09:41 AM.




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