[M3_WC]

Originally Posted by cntzl

I found some lightweight batteries that Porsche owners use. They weigh about 11lbs and cost around $700 but the problem is nobody knows how to code the ECU so that the you won't get any flags, warnings due to battery management system (BMS) being disconnected. If you want to learn more about this, check out this thread on the F80 forum.

Removing 50lbs from the rear with a simple battery change might affect traction and slightly change weight distribution. My goal is to combine the lightweight battery (-50lbs) with CF hood (-20lbs) to balance things out little bit. It still means more weight reduction from the rear but better than not removing anything from the front. Or maybe find another battery that provides less weight savings (e.g. 30lbs)

The members on Porsche forums have installed antigravity battery with no problems. Before anyone received their batteries, numeous people stated there would be problems and programming would be needed. So far so good, with many installations. Have you tried contacting antigravity? They might have firsthand knowledge installing them on modern BMW's.

[M-Pilot]

Originally Posted by M3_WC

The members on Porsche forums have installed antigravity battery with no problems. Before anyone received their batteries, numeous people stated there would be problems and programming would be needed. So far so good, with many installations. Have you tried contacting antigravity? They might have firsthand knowledge installing them on modern BMW's.

I did and their president replied back saying they haven't tested these on BMWs with IBS (the plug on the battery that the car connects to). He said Porsche still uses batteries without these intelligent systems on their cars so that's how it's plug-n-play for Porsches. For modern BMWs, this battery swap would require coding out the IBS or some other solution. If you look at the thread that I referenced above, some people get warnings, errors in the dash even after replacing their battery with another OEM one. The M Performance concept M2 at GFOS couple weeks ago had a lithium battery weighing 30lbs. I wanna know if BMW will ever offer it anytime soon as an M performance part.

[M3_WC]

Originally Posted by cntzl

I did and their president replied back saying they haven't tested these on BMWs with IBS (the plug on the battery that the car connects to). He said Porsche still uses batteries without these intelligent systems on their cars so that's how it's plug-n-play for Porsches. For modern BMWs, this battery swap would require coding out the IBS or some other solution. If you look at the thread that I referenced above, some people get warnings, errors in the dash even after replacing their battery with another OEM one. The M Performance concept M2 at GFOS couple weeks ago had a lithium battery weighing 30lbs. I wanna know if BMW will ever offer it anytime soon as an M performance part.

Doesn’t seem to difficult. You need to register the battery and set to new battery AH rating.

What registration operation performs:
https://f30.bimmerpost.com/forums/sh...68&postcount=9

Diy to register and code new battery(several options):
https://www.1addicts.com/forums/show....php?t=1338304

Also check out the CSL/Mini battery. It was used quite often in the E92 M3 days. It is 55ah and weighs 33lbs(19lbs less M2 batt), cheap too. Although not the savings of the antigravity battery.
https://miniparts.checkeredflag.com/...SABEgLBHPD_BwE

[Alec02]

Originally Posted by cntzl

I found some lightweight batteries that Porsche owners use. They weigh about 11lbs and cost around $700 but the problem is nobody knows how to code the ECU so that the you won't get any flags, warnings due to battery management system (BMS) being disconnected. If you want to learn more about this, check out this thread on the F80 forum.

Removing 50lbs from the rear with a simple battery change might affect traction and slightly change weight distribution. My goal is to combine the lightweight battery (-50lbs) with CF hood (-20lbs) to balance things out little bit. It still means more weight reduction from the rear but better than not removing anything from the front. Or maybe find another battery that provides less weight savings (e.g. 30lbs)

What do you think about this one?

https://www.lightweight-titanauspuff...mw-m2-f87.html

[yawn]

Originally Posted by cntzl

I found some lightweight batteries that Porsche owners use. They weigh about 11lbs and cost around $700 but the problem is nobody knows how to code the ECU so that the you won't get any flags, warnings due to battery management system (BMS) being disconnected. If you want to learn more about this, check out this thread on the F80 forum.

Removing 50lbs from the rear with a simple battery change might affect traction and slightly change weight distribution. My goal is to combine the lightweight battery (-50lbs) with CF hood (-20lbs) to balance things out little bit. It still means more weight reduction from the rear but better than not removing anything from the front. Or maybe find another battery that provides less weight savings (e.g. 30lbs)

I understand that the M2C is a bit of a porker - and so many of us are trying to see where we can reduce weight. What you've mentioned here is what I've been wondering all along - we can't simply just remove weight wherever we want. Take for example, if we change the trunk to CR, we remove the OPF, we change the battery to a lightweight type - what's that going to do to an already front biased weight distribution? If anything, I would have thought carbon fiber hood would be a good placed to start in an attempt to achieve 50/50. Then look under the hood to see what else we could replace to become lighter.

Someone correct me if I'm wrong, just thinking out loud here.

[MR.]

Originally Posted by sharkatron

I understand that the M2C is a bit of a porker - and so many of us are trying to see where we can reduce weight. What you've mentioned here is what I've been wondering all along - we can't simply just remove weight wherever we want. Take for example, if we change the trunk to CR, we remove the OPF, we change the battery to a lightweight type - what's that going to do to an already front biased weight distribution? If anything, I would have thought carbon fiber hood would be a good placed to start in an attempt to achieve 50/50. Then look under the hood to see what else we could replace to become lighter.

Someone correct me if I'm wrong, just thinking out loud here.

Always drive alone and put something in the trunk at the right hand side of the car (In case you have a LHD).... By far the best option to balance the weight distribution and don't have major excessive weight onboard!

MR

[yawn]

Originally Posted by MR.

Always drive alone and put something in the trunk at the right hand side of the car (In case you have a LHD).... By far the best option to balance the weight distribution and don't have major excessive weight onboard!

MR

Then the 25/25/25/25 weight distribution will be off

[hellrotm]

Originally Posted by sharkatron

I understand that the M2C is a bit of a porker - and so many of us are trying to see where we can reduce weight. What you've mentioned here is what I've been wondering all along - we can't simply just remove weight wherever we want. Take for example, if we change the trunk to CR, we remove the OPF, we change the battery to a lightweight type - what's that going to do to an already front biased weight distribution? If anything, I would have thought carbon fiber hood would be a good placed to start in an attempt to achieve 50/50. Then look under the hood to see what else we could replace to become lighter.

Someone correct me if I'm wrong, just thinking out loud here.

It is no different than previous BMW's. Going back to when I owned two new E46 M3's, I and many others all tried to cut weight. Its what you do when you modify cars, all sports cars not just BMW's. My buddy just installed lightweight battery in his Cayman. This not unique to M2C. In reality the M2C is lighter than the M4 with the same engine, much heavier brakes, and no lightweight carbon components. So there is a lot of potential. Losing weight is a balance, trying to keep the overall weight balance relatively close to stock. In the end, a good quality set of coilovers and a corner balance done by an experienced shop...will dial the car into near handling perfection.

Originally Posted by MR.

Always drive alone and put something in the trunk at the right hand side of the car (In case you have a LHD).... By far the best option to balance the weight distribution and don't have major excessive weight onboard!

MR

I know you have lots of jokes lately.

But to seriously answer the question. A corner balance should be done with either you in the driver seat or weights placed in driver seat.

[hellrotm]

Originally Posted by Alec02

What do you think about this one?

https://www.lightweight-titanauspuff...mw-m2-f87.html

Hard to say. Not many specs listed.

[Free Spirit]

After sales MP carbon fiber roof anyone ?


Carbon Fiber Roof - outer panel popped out? https://f80.bimmerpost.com/forums/sh....php?t=1080360

[hellrotm]

Originally Posted by JimmyF87

After sales MP carbon fiber roof anyone ?


Carbon Fiber Roof - outer panel popped out? https://f80.bimmerpost.com/forums/sh....php?t=1080360

That is just the roof molding, not part of the actual carbon roof. Looks like one of the clips failed.

[Free Spirit]

Originally Posted by hellrotm

That is just the roof molding, not part of the actual carbon roof. Looks like one of the clips failed.

Well now we see even with a factory install, there is still room for defects.

[Protatomonster]

Originally Posted by hellrotm

So far only the existing parts are available. The new parts have yet to be released(grill, splitter, hood, trunk, roof, exhaust, etc).
[PICTURE]

does anyone by chance know if the Electronic Steering Wheel is only for DCT or if that works with the manual transmission as well?

[ChrisK]

Did I miss it somewhere, but what is the part number for the M2C CF front splitter?

[Chwali]

51192449476

[ChrisK]

Originally Posted by Chwali

51192449476

Thank you!

[Kleinacus]

Possible stupid question alert. Does the CF roof come with a different black antenna fin? I don't see different part numbers listed out like the giant CF wing, but it certainly looks black to me in the small picture in the M perf PDF list.

[UltraMagneticAL]

Originally Posted by Kleinacus

Possible stupid question alert. Does the CF roof come with a different black antenna fin? I don't see different part numbers listed out like the giant CF wing, but it certainly looks black to me in the small picture in the M perf PDF list.

it will need to be painted, most likely. that's what i did with my cf roof

[UltraMagneticAL]

Originally Posted by Protatomonster

does anyone by chance know if the Electronic Steering Wheel is only for DCT or if that works with the manual transmission as well?

i have it working on my base 6mt. install isn't hard if you have the proper documentation and are decent at wiring. the hardware part is really easy.

unfortunately the wheel doesn't come with the install instructions, only the set up booklet. I've saved the instructions i found though

https://drive.google.com/file/d/146H...w?usp=drivesdk

[Protatomonster]

Originally Posted by UltraMagneticAL

i have it working on my base 6mt. install isn't hard if you have the proper documentation and are decent at wiring. the hardware part is really easy.

unfortunately the wheel doesn't come with the install instructions, only the set up booklet. I've saved the instructions i found though

https://drive.google.com/file/d/146H...w?usp=drivesdk

Oh awesome thank you so much, do you think it was well worth the price of the wheel?

[Protatomonster]

Originally Posted by Protatomonster

Oh awesome thank you so much, do you think it was well worth the price of the wheel?

And are there paddle shifters on the wheel? Wondering if that would look odd.

[UltraMagneticAL]

Originally Posted by Protatomonster

Oh awesome thank you so much, do you think it was well worth the price of the wheel?

it comes in handy on track. i turned off asd, and under the helmet, everything seems muted, so the rev display helps. paired with awron, i see everything i want to know. it's really grippy with driving gloves, but not that nice in daily conditions with bare hands. i plan to transfer it over to my m2c