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BMW M2 Forum > BMW M2 CS Model > M2 CS Price for the US: $83,600 (plus $995 Destination)

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      01-09-2020, 02:05 PM   #1211
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Originally Posted by dmboone25 View Post
Given that the CCBs seems to be somewhat "delicate" or "fragile" with respect to how you can use them in a track situation, what are the practical benefits?

I know there's little to no brake dust, but that's a cosmetic advantage. Are they lighter? I've read that they're also squeaky...just seem like more of a headache than anything.
They save 53.5lbs over the M2C 2NH brakes. And that's entirely unsprung weight and rotating mass.
https://f87.bimmerpost.com/forums/sh...7&postcount=34

If they were a smaller size, I'd consider them. But the possibility of rocks getting stuck between the caliper and rim is too much of a concern for me.

I believe CCBs are also worse when wet and cold.

Last edited by Anthony1s; 01-09-2020 at 02:13 PM..
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      01-09-2020, 02:16 PM   #1212
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Quote:
Originally Posted by Anthony1s View Post
They save 53.5lbs over the M2C 2NH brakes. And that's entirely unsprung weight and rotating mass.
https://f87.bimmerpost.com/forums/sh...7&postcount=34
Redneck math is for every 3lbs of rotational weight saved, thats 1 extra wheel HP. So let's say that the 53.5 is split among all 4 wheel perfectly (definitely not the case), that's 13.375 lbs per wheel. The 2 rear wheels are the only ones driving the car, so you're looking at a (VERY VERY ROUGH) 4.5 whp per rear wheel, or 9 whp total difference with the CCB's vs the steels. Now obviously this is crude math, but somewhat gets the point across. The CCB's are only part of the equation too, the CS wheels will be a whole lot lighter than the piggy 788 wheels, which will also help tremendously.
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      01-09-2020, 02:52 PM   #1213
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Originally Posted by Conissah View Post
Redneck math is for every 3lbs of rotational weight saved, thats 1 extra wheel HP. So let's say that the 53.5 is split among all 4 wheel perfectly (definitely not the case), that's 13.375 lbs per wheel. The 2 rear wheels are the only ones driving the car, so you're looking at a (VERY VERY ROUGH) 4.5 whp per rear wheel, or 9 whp total difference with the CCB's vs the steels. Now obviously this is crude math, but somewhat gets the point across. The CCB's are only part of the equation too, the CS wheels will be a whole lot lighter than the piggy 788 wheels, which will also help tremendously.
Interesting point. The nuance there is moment of inertia - the closer the weight is to the center of the rotation, the less impactful it is to this concept. Put another way, 5 lb lighter tire has more impact than a 5 lb lighter rim which has more impact than a 5 lb lighter brake rotor. A uniform disc like a flywheel is a little accurate from where comparing one to another is even. Way back in my college days when we were required to calculate this stuff you'd reduce the mass down to a point load, generate the approximate distance from the center radii, and then create the moment of inertia from that. For complex items (like a wheel) you'd do the calculus to sum the parts and find the correct moment, or do approximations on various points and average together etc... but I digress.

My short point is - yep, less rotating mass, but choosing lighter tires by a few lbs would make an even bigger difference (for example the Michelin Cup 2's are actually 2-4 lbs lighter than RE71R's at the same size).
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      01-09-2020, 02:56 PM   #1214
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Quote:
Originally Posted by sdhotwn View Post
Interesting point. The nuance there is moment of inertia - the closer the weight is to the center of the rotation, the less impactful it is to this concept. Put another way, 5 lb lighter tire has more impact than a 5 lb lighter rim which has more impact than a 5 lb lighter brake rotor. A uniform disc like a flywheel is a little accurate from where comparing one to another is even. Way back in my college days when we were required to calculate this stuff you'd reduce the mass down to a point load, generate the approximate distance from the center radii, and then create the moment of inertia from that. For complex items (like a wheel) you'd do the calculus to sum the parts and find the correct moment, or do approximations on various points and average together etc... but I digress.

My short point is - yep, less rotating mass, but choosing lighter tires by a few lbs would make an even bigger difference (for example the Michelin Cup 2's are actually 2-4 lbs lighter than RE71R's at the same size).
Bingo. The closer to the hub the weight is, the easier it will be to spin that weight. I don't know the exact calculations, but I'm sure if someone was serious enough it wouldn't be too difficult, and would provide pretty good info. The CS, with it's lighter wheels / brakes (if optioned) / tires, and the extra HP, it will feel like an entirely different beast.
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      01-09-2020, 03:06 PM   #1215
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Originally Posted by dmboone25 View Post
Well guys, I have officially let my allocation for the M2CS go. I have been going back and forth on whether or not the car was for me for a few months now, and I decided to go in a different direction.

I was lucky enough to score a one owner, 2016 CPO 981 BGTS that only has 3K miles on the odometer. This was a local guy's 4th car or something and he only drove it on really nice days apparently.

I had a 981 CS a couple of years ago, and I lamented letting it go after the fact, so this is a way for me to try something new (never had a convertible before) while enjoying some naturally aspirated goodness. And since we already have an OG M2 in the garage, I can still get my ///M fix when I need it.

On that note, the M2CS is going to be a great car, and I am really looking forward to getting to see how they're received (and hopefully one in person at some point).
Nice one! Congrats

I think a very good choice...CS will be for sure a very good car, just the price is too steep in my opinion for what you get...

CS was never option for me...curios about what they do with the next gen...however, for now I have not a very good feeling after seeing the latest renders / leaks for their next gen Ms...but still have hope that they at least will nail it with the M2...if not, gonna be happy to spec a GT4 and join the P family
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      01-09-2020, 03:10 PM   #1216
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Originally Posted by sdhotwn View Post
Way back in my college days when we were required to calculate this stuff you'd reduce the mass down to a point load, generate the approximate distance from the center radii, and then create the moment of inertia from that.
Radius of gyration.
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      01-09-2020, 03:30 PM   #1217
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Radius of gyration.
Angle of the dangle
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      01-09-2020, 04:11 PM   #1218
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Angle of the dangle
I was getting dangle angle error codes for the longest, turned out BMW had to re-calibrate my plumb bob position sensor.
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      01-09-2020, 05:38 PM   #1219
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I thought this was a good video.

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      01-09-2020, 08:12 PM   #1220
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Originally Posted by Tornado1M View Post
Quote:
Originally Posted by medphysdave View Post
I wonder if the enthusiasm in the us market is lacking and they are hoping for good press in Euro market to get things cooking
I honestly believe the delay in the USA is due to BMW sorting out international demand first and figuring out allocations. Whatever is not taken up internationally will be dumped in the USA market. Given the results of the M3/4cs it makes sense that they are more careful about country specific allocations.
I think you are spot on. This is what they are doing in Australia now. They will only allocate cars that are sold. Currently 90 "orders" and 70 cars. I believe they are currently turning orders into sales.
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      01-09-2020, 08:21 PM   #1221
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Quote:
Originally Posted by sdhotwn View Post
My short point is - yep, less rotating mass, but choosing lighter tires by a few lbs would make an even bigger difference (for example the Michelin Cup 2's are actually 2-4 lbs lighter than RE71R's at the same size).
Spot on. An 18" wheel with a dedicated track tyre saves a ton of weight. Years ago I ran 1" smaller with Hoosiers on an e36. What a difference. People forget about tyre weight all the time.
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      01-10-2020, 02:10 AM   #1222
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All I want is an M2C with a warrantied OEM CS tune.
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      01-10-2020, 05:50 AM   #1223
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All I want is an M2C with a warrantied OEM CS tune.
I wouldn't put it past BMW to offer this as an "M-performance" item at some point. Let the CS allocations fill out and then roll out the tune maybe Fall 2020 and price it at a level where those who want to retain the factory engine and drivetrain warranty will pony up. Of course they won't say that it is the "CS" tune, and all they would have to do is change one bit in the code (that does nothing) so they could legally claim that it is *not* the CS tuning I'm thinking $1995 or some such would do it. Kind of makes you wonder what the maximum profit point is on the price demand curve for such. Costs on BMW's end are minuscule to implement.
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      01-10-2020, 06:09 AM   #1224
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I wouldn't put it past BMW to offer this as an "M-performance" item at some point. Let the CS allocations fill out and then roll out the tune maybe Fall 2020 and price it at a level where those who want to retain the factory engine and drivetrain warranty will pony up. Of course they won't say that it is the "CS" tune, and all they would have to do is change one bit in the code (that does nothing) so they could legally claim that it is *not* the CS tuning I'm thinking $1995 or some such would do it. Kind of makes you wonder what the maximum profit point is on the price demand curve for such. Costs on BMW's end are minuscule to implement.
I agree with this and was just thinking the same thing. Tesla does it, so why can't BMW. I'd pay $2k or a little more for a factory warrantied tune.
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      01-10-2020, 07:04 AM   #1225
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I agree with this and was just thinking the same thing. Tesla does it, so why can't BMW. I'd pay $2k or a little more for a factory warrantied tune.
That's about what the MPPK tune on my 335 was from the factory.
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      01-10-2020, 07:13 AM   #1226
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Originally Posted by mashoutposse View Post
All I want is an M2C with a warrantied OEM CS tune.
People who have driven both M3 CS and M3 Competition have reported that there is a noticeable difference in suspension and other variables besides the tune. It will be interesting when reviews come out.
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      01-10-2020, 07:46 AM   #1227
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I felt that the video above did a good description of discussing M as a whole, and the expertise involved. The reviewers still preferred the older models, bet expressed how the modern m cars embody the spirit of the goal. I suspect the M2 CS is going to feel like a different animal.
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      01-10-2020, 10:31 AM   #1228
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Originally Posted by medphysdave View Post
I felt that the video above did a good description of discussing M as a whole, and the expertise involved. The reviewers still preferred the older models, bet expressed how the modern m cars embody the spirit of the goal. I suspect the M2 CS is going to feel like a different animal.
In my experience, the m4c and CS don’t feel that different on the street, assuming both have 19” wheels.

Now the M2c stock compared to it with the MPS, and the Noelle tune I did. That’s a totally different animal.

I’m curious to see though, if I ever get my hands on one.
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      01-10-2020, 12:50 PM   #1229
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Just been informed by my dealer in the UK that I have been offered an allocation. If I decide to proceed the car will be a July build for Aug/Sept delivery.
Food for thought over the weekend!
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      01-10-2020, 09:57 PM   #1230
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Just been informed by my dealer in the UK that I have been offered an allocation. If I decide to proceed the car will be a July build for Aug/Sept delivery.
Food for thought over the weekend!
Hmm... Interesting if that means the US deliveries will be after that even. Not what I was hoping for.
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      01-10-2020, 10:17 PM   #1231
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How can I get one with no mark up here in SoCal?
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      01-10-2020, 10:29 PM   #1232
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How can I get one with no mark up here in SoCal?
I'm wondering if BMW has the ability to eliminate ADM by taking confirmed orders. In that instance the dealership isn't really buying the car.
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