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      03-14-2019, 02:25 PM   #45
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Appreciate all the info in this thread and just sharing some measurements and total weight figures from my recent corner balance.

~11 Gallons of Gas (nearly full) and No Driver: 3,141lbs
FL:823 | FR:822 | RL:856 | RR:790
----Corner Weights include a 150lbs driver----

F/R Weight: 49.99%
Cross Weight: 49%

Major Weight Reduction Performed to Z4M Coupe w/ Nav & Premium Package:
- Braille 15Lb Battery: -33lbs
- Removed both Subwoofers: -16lbs
- Hatch Plastic, Theft Cover, Lining & Tool Kit: -40lbs
- Delete: AC Compressor/Condenser/Lines, EGR, Washer Fluid Tank: 51lbs
- Race Seats w/ Brackets: -64lbs
- Cat-less Headers: -10lbs
- Rogue Exhaust & X-Pipe: -19lbs
- Bolt-In Roll Bar & Fire Hydrant: +43lbs
- APR GTC200 & Splitter: +15lbs
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Last edited by Azeka1; 03-15-2019 at 09:50 AM..
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      03-15-2019, 08:55 AM   #46
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mine for reference Azeka,




That's with rollbar, rear and front Stb (back one is heavy) big battery in the boot, (11lbs one on the way) and door cards in place. Lol and full fuel. so half tank would be minus 20 kgs or so.

if I take -33 lbs for the huge batt for brallie swap out.. (I also have the 15lbs one) installed a week or 2 ago.

33/2.2= -15kgs.. would bring mine to 1376 kgs.. that's 3027 lbs.

Intrested in how you installed the new batt, I umed and arred a long time before finally placing the new batt and its holder.

i /did/ however pull the whole radio/nav thing bit out though..
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Last edited by Vanne; 03-15-2019 at 09:01 AM..
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      03-15-2019, 09:50 AM   #47
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Quote:
Originally Posted by Vanne View Post
mine for reference Azeka,




That's with rollbar, rear and front Stb (back one is heavy) big battery in the boot, (11lbs one on the way) and door cards in place. Lol and full fuel. so half tank would be minus 20 kgs or so.

if I take -33 lbs for the huge batt for brallie swap out.. (I also have the 15lbs one) installed a week or 2 ago.

33/2.2= -15kgs.. would bring mine to 1376 kgs.. that's 3027 lbs.

Intrested in how you installed the new batt, I umed and arred a long time before finally placing the new batt and its holder.

i /did/ however pull the whole radio/nav thing bit out though..
Thanks for sharing, Vanne! We have very similar mods so this is a good comparison. Interesting how with your heavy battery you are still 90lbs lighter I guess the Radio/Nav/Amps all add up...

As a point of clarification, my corner weights include a 150lb ballast for driver (Will update my post).

With regards to the Braille Battery, I used a Macht Schnell mount for E92, fits perfectly.
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2006 E86 M Coupe | Silver Gray / Imola | JRZ RSTWO | SS Headers | Rouge Exhaust| APEX ARC-8 | APR Aero | Sparco Seats/Belts | Weichers Cage | Solid Motor/Trans/Shifter/SubFrame | Poly Bushings | Race Camber Plates/Arms | CSF Rad/Oil | BW Brake Ducts | Braille Battery | AC/EGR Delete | 3,100lbs
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      03-15-2019, 10:27 AM   #48
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For reference:
My z4 non-M coupe
3160lb
fulltank gas
1gal water/meth in rear
52.3% front
47.6% rear
9lb braile in rear
2jz up front
no cage, race seats
all amenities (AC, lcd-screen nav/radio, speakers, heavy wood-grain dash panels)

every time I reduce weight, seems to be from the rear. There is more I can remove, but I don't want to make the front/rear balance worse.

Planning a cage soon, 40lb more to the rear I guess.
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      05-04-2019, 05:05 PM   #49
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Anyone do cf hoods.
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      06-16-2019, 10:42 PM   #50
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Anyone have the weights of their dash panels? Looking for wood, aluminum and carbon variants to add here.
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      06-22-2019, 08:04 PM   #51
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Quote:
Originally Posted by dre99gsx View Post
Anyone have the weights of their dash panels? Looking for wood, aluminum and carbon variants to add here.
See post #28.
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      06-22-2019, 08:05 PM   #52
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Quote:
Originally Posted by MC007 View Post
Anyone do cf hoods.
The M's have an aluminum hood that is pretty light. Little bang for the buck in a CF hood.
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      11-14-2019, 05:43 PM   #53
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Can anyone supply weights for:

AC Components
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      11-14-2019, 07:28 PM   #54
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See Post 45

Quote:
Originally Posted by dre99gsx View Post
Can anyone supply weights for:

AC Components
- Delete: AC Compressor/Condenser/Lines, EGR, Washer Fluid Tank: 51lbs
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      11-19-2019, 10:55 PM   #55
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Adding another data point. Some of you may find this interesting as I'm supercharged

Z4m coupe
3/4 tank

A few mods that probably effect weight
Recaros and fixed seats
Euro headers, catless section 1, with RPIs
Arc8s (18x10s)
Ltw 12lb battery

Vf570 (or what started out as that)
Dual 25 row oil coolers (replaced oem) (+1.5L oil)
Massive 2.5 gal ATW heat exchanger (3x bigger then oem vf) (+35lbs hanging off the front of the car when filled)


3241lbs with driver (185lbs). Definitely need to corner balance, but playing with tire sizes and waiting for an alignment first. Honestly thought I'd be closer to 3300 with the blower and auxiliary supporting mods.

What amazes me is our little cars are pretty damn heavy compared to larger body vehicles (my stock ish e46 m3 for instance is 3450 with me in it, and I can more easily take out 350lbs if I went full race mode, where as removing weight gets asymptotically difficult in our cars due to the size). I guess that's what we pay for with the chassis torsional rigidity.
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      12-04-2019, 05:31 AM   #56
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Couple more bits..

"Press to retract mirrors" 1.5kgs each.. that's a lot..
6.6lbs for both.



Replaced with GT2 race mirrors.
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      12-04-2019, 03:18 PM   #57
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Well done Vanne!
What do the new GT2 mirrors weigh??

Removing 6.6 lbs (minus the replacement mirrors) from the upper area of the vehicle has a very positive effect on the center of gravity (CG).
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      12-04-2019, 03:27 PM   #58
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Wowie Calichase -

3,230 lbs stock
3,056 lbs w/o driver

Weight reduction: 174 lbs

That's a big deal!
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      12-05-2019, 12:24 PM   #59
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Quote:
Originally Posted by racerbruce View Post
Well done Vanne!
What do the new GT2 mirrors weigh??

Removing 6.6 lbs (minus the replacement mirrors) from the upper area of the vehicle has a very positive effect on the center of gravity (CG).
About 500 grams for both.
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      12-05-2019, 06:20 PM   #60
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Quote:
Originally Posted by Vanne View Post
About 500 grams for both.
Wowie!
500 grams = 1.1 lbs

6.6 minus 1.1 = a 5.5 lbs savings....that's considerable based upon the location of the weight!
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      Yesterday, 02:39 PM   #61
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Mine with @7 gallons and driver weight. About 2,670 empty.

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      Yesterday, 11:33 PM   #62
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thats pretty light mate, mind adding the things youve added/removed from the car?
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      Yesterday, 11:37 PM   #63
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guys, whats required for the ac/heater removal?
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