[Ravenseal]

Originally Posted by Celestion

Do you still need to do bimmercode with these, or is it a straight-forward swap?

You still need bimmercode since the car has to be instructed it's Li-Ion instead of AGM.

[Celestion]

Originally Posted by Tag

You need to register the battery and if the new battery has different Ah rating, you'll need to code that in as well. BimmerCode only has the ability to change the Ah rating while only BimmerLink can register the battery. I believe the Carly app can do both but that's a subscription whereas with BimmerCode/Link you pay for the apps once.

Thanks! Do OTA updates force a recode?

[Tag]

Originally Posted by Celestion

Thanks! Do OTA updates force a recode?

Not sure I follow, are you asking if the battery will get recoded? If so, the answer is no. Only time a battery gets registered/coded is after it's been replaced otherwise there's the potential to overcharge it and degrade its life or in the worst case it may explode.

[Celestion]

Originally Posted by Tag

Not sure I follow, are you asking if the battery will get recoded? If so, the answer is no. Only time a battery gets registered/coded is after it's been replaced otherwise there's the potential to overcharge it and degrade its life or in the worst case it may explode.

helpful. thank you!

[Kevin_The_Clean1]

Originally Posted by Carefree

Weight reduction plan:
90% 93 octane/10% Ozempic

Originally Posted by Carefree

Here’s an idea, don’t like the comments? Ignore them, instead of contributing nothing.
The forum moderators, not you, evaluate suitability.
Goodbye.

Here's a better idea, see above as proof you continue to contradict yourself. Post by post. Was your first comment a contribution to this thread in any way...? Didn't think so. Your talk doesn't match your walk. You're obviously not Care Free in any way. Lighten up Biff.

Back on topic: It's good to know that BMW was a little conservative with their initial weight estimation figures previously quoted for the G87 M2 in various specs. Just like their estimated HP & TQ figures, BMW is being a touch on the cautious side & under rating things. But in this case, they're over padding things a bit. But that's maybe a good thing as we're pleasantly surprised by the numbers trickling in.

[Carefree]

Originally Posted by Kevin_The_Clean1

Here's a better idea, see above as proof you continue to contradict yourself. Post by post. Was your first comment a contribution to this thread in any way...? Didn't think so. Your talk doesn't match your walk. You're obviously not Care Free in any way. Lighten up Biff.

Back on topic: It's good to know that BMW was a little conservative with their initial weight estimation figures previously quoted for the G87 M2 in various specs. Just like their estimated HP & TQ figures, BMW is being a touch on the cautious side & under rating things. But in this case, they're over padding things a bit. But that's maybe a good thing as we're pleasantly surprised by the numbers trickling in.

Kevin_The_Clown1

I enjoy healthy repartee’ (look that one up) and would normally banter further but not here. Why? I never engage with stupid people. They drag you down to their level and crush you with experience.

Block or ignore me if my comments raise your BP and then go live your life. I’m here to stay.

I wish you the best.

[zero21]

Originally Posted by Celestion

Sooooo the OPs weight is pretty close to what BMW lists as the curb weight for the manual w/default config (sunroof and comfort seats) ~3747lbs. BMW is being accurate here.

I made a spreadsheet to see how easy/difficult it is to reduce weight in this car. I believe that you can get a manual under 3600lbs (at a 1/4th tank) without too much effort or expense assuming the car is spec'd appropriately.

- BMW carbon buckets = -22 lbs (11 lbs per seat)
- Carbon roof = -48 lbs
- lighter wheels (826M) with the same tires = -27.2 lbs
- Lithium-Ion battery = -39 lbs
- Midpipe = -15 lbs

That puts us at 151.2 lbs of weight reduction.

Sooo using the OPs weight of 3729, minus the weight of the mods above, puts us at 3578 lbs.

I have yet to see any wheel weight savings come close to the paper expectations, my own experience included. It's a few pounds per corner.

These are all paper claims for going on 18mo. No one has shown a car under 3650 (with fuel, even Jackie Ding) to my knowledge, despite significant investment.

[bmwimsafan]

I know zero21 mentioned a while back his weight savings on the 827M’s weren’t as much as claimed by BMW.

I weighed my 827M’s out of the box, then weighed my 930M’s on the same Renpho scale (I weighed each wheel 3-4 times at different angles on the scale to make sure I was getting a consistent weight each time). Both the 827M’s and 930M’s weighed exactly what BMW said they would (for the 827M’s it was 23.8 lbs/front and 24.2 lbs/rear). It was exactly a 21 lb savings overall, just as expected.

[Celestion]

Originally Posted by zero21

I have yet to see any wheel weight savings come close to the paper expectations, my own experience included. It's a few pounds per corner.

These are all paper claims for going on 18mo. No one has shown a car under 3650 (with fuel, even Jackie Ding) to my knowledge, despite significant investment.

I share your concerns. I intend to do wheels and midpipe (and I added the carbon pack). Will put these paper claims to the test once my car is delivered… although, I’m doing these mods to make the car more fun, not for weight savings

[M_Power Rob]

Originally Posted by Celestion

I share your concerns. I intend to do wheels and midpipe (and I added the carbon pack). Will put these paper claims to the test once my car is delivered… although, I’m doing these mods to make the car more fun, not for weight savings

If one is purely trying to come up with the lightest G87 and money is not an object, the following would be some effective "mods": rear seat delete, cf fenders and trunk from Alpha, cf hood from Alpha/Vorsteiner, cf strut brace, aftermarket rotors (Girodisc for one), cf driveshaft (Driveshaft Shop will custom make it)....you get my drift.

[Celestion]

Originally Posted by M_Power Rob

If one is purely trying to come up with the lightest G87 and money is not an object, the following would be some effective "mods": rear seat delete, cf fenders and trunk from Alpha, cf hood from Alpha/Vorsteiner, cf strut brace, aftermarket rotors (Girodisc for one), cf driveshaft (Driveshaft Shop will custom make it)....you get my drift.

That’s probably $30k or more after install though. I would feel bad for not buying Porsche at that point.

[two_three_two]

Originally Posted by Celestion

That’s probably $30k or more after install though. I would feel bad for not buying Porsche at that point.

+1- i think the case for the M2 falls apart north of 85-90k invested. IMHO.

[M_Power Rob]

Originally Posted by Celestion

That’s probably $30k or more after install though. I would feel bad for not buying Porsche at that point.

If you are comparing to a 718, that would be a hard pass. I was also just making a point that there are many ways to shed the weight if that is your goal.

Doing something right isn't cheap...

[M_Power Rob]

Originally Posted by two_three_two

+1- i think the case for the M2 falls apart north of 85-90k invested. IMHO.

Just doing paint correction, ppf, ceramic and tint will put you in or very near the $80k range. Rims and tires you are now getting $85k - $90k depending on the rims. It truly doesn't take much to get the G87 M2 above $90k. Want exhaust, intake, tune, etc. and guess what you approach (I didn't even mention any cf parts)?

I know, you can get a Porsche for that (and lets talk about new cars, not CPO)...I wouldn't consider a 718. Talk about a 911, you are in another league. Do pc, ppf, ceramic, tint and mods on a 911, let me know where you fall...

[two_three_two]

Originally Posted by M_Power Rob

Just doing paint correction, ppf, ceramic and tint will put you in or very near the $80k range. Rims and tires you are now getting $85k - $90k depending on the rims. It truly doesn't take much to get the G87 M2 above $90k. Want exhaust, intake, tune, etc. and guess what you approach (I didn't even mention any cf parts)?

I know, you can get a Porsche for that (and lets talk about new cars, not CPO)...I wouldn't consider a 718. Talk about a 911, you are in another league. Do pc, ppf, ceramic, tint and mods on a 911, let me know where you fall...

i agree on the 718 point, and rob, you have a sweet ride. for me, personally, and how i use this car thats kind of my line in the sand. PC, ceramic, cooling protection, forged wheels (albeit not aftermarket), roof rails and ski rack, winter tires on OEM rims, and soon tints lands me ~75-76k after taxes. ill do some odds and ends (midpipe, spacers, aftermarket spoiler) and likely end up in the ~80-82k range depending on specific part choice and what not.

south of 100k it really is hard to find a better option (or at least it turns into a personal preference thing). im not a 911 guy per se but to me the math stops mathing around 85-90k. that said, i really do respect folks taking the platform to its logical conclusion (like your build) and supporting and building a robust aftermarket for this car.