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 > Suspension | Brakes | Chassis
 
Post Reply
 
Thread Tools Search this Thread
      05-27-2009, 04:02 PM   #199
lucid
0
Major General
 
lucid's Avatar
 
Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

Posts: 8,034
iTrader: (0)

Quote:
Originally Posted by J08M3 View Post
Ha, good point. Why not just sticky it here in the General forum?
Since this is really discussion about potential modification to reduce weight, the general forum is probably not the best place. Among the technical forums, the "Suspension Brake Chassis" forum is the best target for this sticky.

If people have other weight savings ideas, I will integrate them into the original post.
__________________
lucid is offline   United_States
Appreciate 0
Reply With Quote
      05-27-2009, 09:00 PM   #200
OC ///M
0
Dr. Octagon
 
OC ///M's Avatar
 
Drives: Moonstone e92 M3
Join Date: Feb 2007
Location: So Cal

Posts: 1,817
iTrader: (0)

Quote:
Originally Posted by lucid View Post
Good to hear from you OC!

This is a long shot, but if you just happen to have that 380mm brembo kit sitting around collecting dust--the way expensive BBKs do--can you weigh the parts again?

Right!
Ha! no sweat.

Actually, since you mentioned it, I have had the OEM fronts back on the car for a while now. I just so happened to have dropped the car off today to get the BBK re-installed and have specifically asked for the Brembo's and the OEM's be weighed prior to install. We should get an "independent" report of the weight from the performance shop who's re-installing them, hopefully by tomorrow...
__________________
OC ///M

2013 E92 M3 Individual
Sold: 2011 E92 M3 SSII | Sold: 2008 E92 M3 SSII | Into a Wall: 2008 E92 M3 SSII | Sold: 2007 E92 335i JB
OC ///M is offline   United_States
Appreciate 0
Reply With Quote
      05-27-2009, 09:14 PM   #201
lucid
0
Major General
 
lucid's Avatar
 
Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

Posts: 8,034
iTrader: (0)

Quote:
Originally Posted by OC kid View Post
Ha! no sweat.

Actually, since you mentioned it, I have had the OEM fronts back on the car for a while now. I just so happened to have dropped the car off today to get the BBK re-installed and have specifically asked for the Brembo's and the OEM's be weighed prior to install. We should get an "independent" report of the weight from the performance shop who's re-installing them, hopefully by tomorrow...
Thanks man! That's cool...
__________________
lucid is offline   United_States
Appreciate 0
Reply With Quote
      06-19-2009, 02:03 AM   #202
stylinexpat
0
Captain
 
stylinexpat's Avatar
 
Drives:
Join Date: Aug 2008

Posts: 807
iTrader: (0)

Quote:
Originally Posted by Epacy View Post
Odyseey.

Attachment 147189



Good thread Lucid. I will stay tuned.

I am familiar with the effects of over-moding and the impact on the ride. I hope to steer clear of that with this car.

Looks like we lose a lot of cranking AMP power. I am looking for a lightweight battery but want a good one.
stylinexpat is offline  
Appreciate 0
Reply With Quote
      09-19-2009, 03:03 AM   #203
michaeldorian
0
Captain
 
Drives: Beater Nissan Truck
Join Date: Jan 2008
Location: Seattle, WA

Posts: 964
iTrader: (0)

Wow. Just went through the entire thread. One of the best on this site. Let's keep the weights of aftermarket parts coming. Hopefully this turns into THE resource for e9X weight info. Subscribed.
__________________
michaeldorian is offline   United_States
Appreciate 0
Reply With Quote
      10-08-2009, 03:34 PM   #204
SV Concepts
0
 
SV Concepts's Avatar
 
Drives: Vorsteiner E60 M5
Join Date: Mar 2006
Location: 1460 White Oaks Rd. Suite F. Campbell, CA 95008

Posts: 5,869
iTrader: (10)

EXCELLENT thread. Saved for future reference
SV Concepts is offline   United_States
Appreciate 0
Reply With Quote
      10-19-2009, 10:36 AM   #205
lucid
0
Major General
 
lucid's Avatar
 
Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

Posts: 8,034
iTrader: (0)

Added info on Mini/E46CSL battery.
__________________
lucid is offline   United_States
Appreciate 0
Reply With Quote
      11-03-2009, 03:03 PM   #206
graider
0
Colonel
 
graider's Avatar
 
Drives: py/kiwi e46 m3
Join Date: Aug 2007
Location: toronto

Posts: 2,408
iTrader: (0)

if you are fat, loose about 100lbs. that is huge weight saving right there.

and take off your bling gold chain. that's like 10+hp for you.
graider is offline  
Appreciate 0
Reply With Quote
      07-14-2010, 02:01 PM   #207
bavarian06
0
Captain
 
bavarian06's Avatar
 
Drives: e92 M3
Join Date: Apr 2006
Location: CA

Posts: 896
iTrader: (6)

Without stripping the heck out of your car, the removal of the washer fluid is a smart idea, 8lbs is a lot. The best bang for the buck would be the battery and exhaust swap and a cf trunk.
bavarian06 is offline   United_States
Appreciate 0
Reply With Quote
      08-10-2010, 06:53 PM   #208
Radiation Joe
0
Veni Vidi Vici
 
Radiation Joe's Avatar
 
Drives: '11 JB/BBe-6sp-e90
Join Date: Jul 2008
Location: Macungie PA

Posts: 2,749
iTrader: (0)

Garage List
2011 e90 M3-Sold  [4.25]
2003 RS6 - Sold  [0.00]
2009 e90 M3 - Gone  [0.00]
2003 M3 SOLD  [0.00]
old 2002  [5.00]
Don't know if this was mentioned earlier, but I just weighed the Performance Friction stock replacement rotors at 18.2 pounds. That's a 4.5 pound savings over OEM.

Compare that with the 5 pounds I'll save per corner with the RAC RG63s and that means 29 lbs of unsprung weight removed from my car.
Radiation Joe is offline   United_States
Appreciate 0
Reply With Quote
      08-10-2010, 07:53 PM   #209
swamp2
0
Lieutenant General
 
swamp2's Avatar
 
Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

Posts: 10,201
iTrader: (1)

Quote:
Originally Posted by Radiation Joe View Post
Don't know if this was mentioned earlier, but I just weighed the Performance Friction stock replacement rotors at 18.2 pounds. That's a 4.5 pound savings over OEM.

Compare that with the 5 pounds I'll save per corner with the RAC RG63s and that means 29 lbs of unsprung weight removed from my car.
Sounds good. Pics? Floating or non floating? Diameter and thickness vs. stock?
swamp2 is offline   United_States
Appreciate 0
Reply With Quote
      08-10-2010, 08:48 PM   #210
Radiation Joe
0
Veni Vidi Vici
 
Radiation Joe's Avatar
 
Drives: '11 JB/BBe-6sp-e90
Join Date: Jul 2008
Location: Macungie PA

Posts: 2,749
iTrader: (0)

Garage List
2011 e90 M3-Sold  [4.25]
2003 RS6 - Sold  [0.00]
2009 e90 M3 - Gone  [0.00]
2003 M3 SOLD  [0.00]
old 2002  [5.00]
Quote:
Originally Posted by swamp2 View Post
Sounds good. Pics? Floating or non floating? Diameter and thickness vs. stock?
Bimmerworld for the win.
Radiation Joe is offline   United_States
Appreciate 0
Reply With Quote
      10-25-2010, 12:14 AM   #211
klammer
0
Brigadier General
 
Drives: 11 spc gry m3 e90, 07 X5
Join Date: Jan 2010
Location: chicago

Posts: 3,241
iTrader: (0)

saw somewhere on here that stock roof with moon is 55lb. would like clarification, if available, and how much weight is saved by going the cf route, as well its effect on cog by changing the weight at the top of the car...
__________________
mods: akra evo, dinan 3.45 diff, ess akra tune, dinan stg.3, Alcon bbk, HRE P40
klammer is offline  
Appreciate 0
Reply With Quote
      02-05-2011, 11:41 AM   #212
marwol
0
Private
 
Drives: BMW 1 series
Join Date: Feb 2010
Location: Germany

Posts: 52
iTrader: (0)

Does anybody have weights for the Tecnocraft Carbon Intake System or the Macht Schnell Stage II?

------------------------------------------
The german company Faktor offers a Lithium battery which combinates leightweight with good performance.

Here is a link to the 40AH version:
http://www.faktor.de/index.php?optio...mid=41&lang=de

shortfacts:
weight: 6kg (approx 13,2lbs)
capacity: 40AH
cost: 290€ (approx 390$)
marwol is offline  
Appreciate 0
Reply With Quote
      02-06-2011, 11:08 PM   #213
PhoenixM3
0
Enlisted Member
 
Drives: 2011 E90 DCT M3
Join Date: Jan 2008
Location: Napoli, Italia

Posts: 31
iTrader: (0)

Something not discussed, but essentially free is the removal of sound deadening material which is typically bonded to various spots of the chassis in areas where sound penetrates the passenger compartment. I still have an E46 M3 and pulled approximately 30lbs of this stuff from trunk and rear seating area. I'm certain that there's more, but the car is still a DD.

We're 5 weeks away from picking up my wife's E90 M3, and I'm hoping that this will be a relatively easy mod to shed some weight.

I have some tips for easy removal of this stuff if anyone is interested. The only costs involved would include a heat lamp, a few PLASTIC paint scrapers, and a can of carb/choke cleaner. Oh, time to remove the trunk liner and rear seats and carpet can't be discounted either.

PhoenixM3
PhoenixM3 is offline  
Appreciate 0
Reply With Quote
      02-09-2011, 01:33 PM   #214
wwjd15
0
Banned
 
Drives: 11 E92 M3 MR
Join Date: May 2009
Location: Orange County

Posts: 1,322
iTrader: (6)

Wow! The ratio of Amuse door panels makes me believe it's a steal!
wwjd15 is offline   United_States
Appreciate 0
Reply With Quote
      04-28-2011, 08:39 AM   #215
Nautik
0
Captain
 
Drives: 2009 AW M3 DCT
Join Date: May 2010
Location: NoVA

Posts: 632
iTrader: (0)

Would love to see information about declining certain options such as:
  • Navi
  • Power Seats
  • Power Folding mirrors
  • Heated Seats
  • DCT
  • EDC (vs what some aftermarket suspensions weight maybe?)
  • Premium Sound
  • Moon Roof
Hopefully someone knows some of this information...
__________________
2009 e92 M3 - AW DCT - Apex Arc8s - Corsa
Nautik is offline  
Appreciate 0
Reply With Quote
      05-15-2011, 09:08 PM   #216
klammer
0
Brigadier General
 
Drives: 11 spc gry m3 e90, 07 X5
Join Date: Jan 2010
Location: chicago

Posts: 3,241
iTrader: (0)

would actually like to see some weights of vehicles and what mods were done. Have a few more ideas to entertain and then plan on weighing her. Think he'll be in good fighting shape
__________________
mods: akra evo, dinan 3.45 diff, ess akra tune, dinan stg.3, Alcon bbk, HRE P40
klammer is offline  
Appreciate 0
Reply With Quote
      06-18-2011, 04:53 PM   #217
Carlos@MORR
0
First Lieutenant
 
Carlos@MORR's Avatar
 
Drives: Individual E92 M3
Join Date: Aug 2010
Location: Everywhere

Posts: 357
iTrader: (1)

I have personally started a lightweight project for my future Individual M3 and the cost of replacing parts for lighter ones is absurd. Between lighter trunk, door panels, seats, and exhaust you are at almost $15,000.

Even though the notion of a lightweight M3 is very appealing, for the cost of reducing weight on the E90/E92 Chassis, it`ll be cheaper and more effective to purchase a light set of wheels, brakes, suspension and add a supercharger kit effective increasing your power/weight rating which is the end goal after all.
Carlos@MORR is offline   United_States
Appreciate 0
Reply With Quote
      06-24-2011, 04:29 AM   #218
HBspeed
0
Lieutenant
 
HBspeed's Avatar
 
Drives: 05 M3, 00 Z3MC, Boxster Spyder
Join Date: Nov 2007
Location: Huntington Beach, CA

Posts: 583
iTrader: (0)

Garage List
Quote:
Originally Posted by Carlos@MORR View Post
I have personally started a lightweight project for my future Individual M3 and the cost of replacing parts for lighter ones is absurd. Between lighter trunk, door panels, seats, and exhaust you are at almost $15,000.

Even though the notion of a lightweight M3 is very appealing, for the cost of reducing weight on the E90/E92 Chassis, it`ll be cheaper and more effective to purchase a light set of wheels, brakes, suspension and add a supercharger kit effective increasing your power/weight rating which is the end goal after all.
You are correct, but I believe the whole spirit of weight loss is to retain the naturally aspirated nature of the engine while increasing performance.

If/When I get an E92 M3 I will do exactly as you suggest other than the supercharger. However the way I look at sports car buying is: if you aren't going to be satisfied after spending the 10-15k or so on high end Wheels/tires, suspension and brakes... you might as well just put that money towards a car that in stock form will be superior anyways. For most here that generally means a Porsche, namely a GT3.

The problem is aftermarket weight loss solutions are never going to be cost effective. That is why we should all be begging for BMW to distribute the costs more by making weight loss come straight off the assembly line.

Sadly the high revving M engine days are gasping their last breath so we are going to be forever limited to what is available today as far as BMW goes, barring the miracle of a E92 CSL version showing up here in the US...

Last edited by HBspeed; 06-24-2011 at 04:36 AM.
HBspeed is offline  
Appreciate 0
Reply With Quote
      09-05-2011, 02:53 PM   #219
lukester
0
Second Lieutenant
 
Drives: BMW M3
Join Date: Feb 2011
Location: Munich, Germany

Posts: 269
iTrader: (0)

Great thread. But the issue with removing weight from the M3 is that it changes the car.
If you go through it like I did - basically the stuff which makes sense - only removes weight from the rear of the car which changes the handling.

I did:
Full Akrapovic Exhaust (~23kg/50lbs)
rear seat delete & remove all unnecessary parts and insulation from the trunk (~28kg/61lbs)
55Ah Battery (~11kg/ 24lbs)
Recaro Pole Position seats driver and passenger (~29kg/ 64lbs)
OZ Ultraleggera Wheels with Michelin Pilot Cup tires (~7kg/ 15lbs)

All mods make sense for me as I love track days and would have done it even if it doesn't make the car lighter (e.g. the seats, wheels, tires, ...)

My M3 should be +/- 216 lbs (98kg) lighter than stock at the moment.

But....the car switched from a slightly oversteering M3 to an more understeering M3. There's no power steering available any more as it just
pushes over the front wheels.
(you can still drift it but you have to force it)

It's logical. A lot of the stuff has been removed from the rear or the center of the car.
Nothing from the front or under the hood. So the weight balance moved away from were it should be.

Will weight my car within the next weeks and I'm really interested to see the final results.

What can be done against this new handling?
I'm gonna try some 265/35-19 Michelin Pilot Cup on the front, too. At the moment the setup is 235 and 265 which is not perfect if you like an oversteering M3.

But I'm missing ideas what to do with the front.

A carbon hood will only help with ~4kg/ 8.8lbs. Not really worth it.

What I saw ... but I'm not sure if it's a good idea. Replace the big underfloor plate (it's directly under the engine) with a more lightweight part as this thing is really massive (and we do have good streets in germany so there's no need for such a engine protection).
lukester is offline   Germany
Appreciate 0
Reply With Quote
      09-05-2011, 11:33 PM   #220
shay2nak
0
I <3 E90 M3
 
shay2nak's Avatar
 
Drives: 325i/Lotus Exige S
Join Date: Feb 2011
Location: Calipornia

Posts: 288
iTrader: (0)

Quote:
Originally Posted by T Bone View Post
this battery is great. I've had it in my Exige for 3 years (along w/other lotus peeps). No probs. I had the 1st gen and had it upgraded to the new spec. For only 5lbs, lasts about 12 days car just sitting in the garage. Saved me 23lbs in exige, for you guys I'm sure it would be at least double that.

Also, IND just put up their new carbon hood. Might want to add that also.
shay2nak is offline   United_States
Appreciate 0
Reply With Quote
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
Forum Jump


All times are GMT -5. The time now is 09:33 PM.




m3post
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