[M-Pilot]

Everyone keeps comparing these 2 cars and there are several comments about how M2C weighs more than an M3/M4. When people were making this comparison they always referred the weight figure on BMWUSA from 2015 for 2015MY M4 which had lighter 437M wheels as opposed to heavier 666Ms and also CF driveshaft as opposed to steel driveshaft can be found on 2019 M4.

Well I just noticed today that BMWUSA updated their spec sheet for the 2019 M4. Now the manual M4 weighs 3625lbs and DCT weighs 3685lbs (some of this extra weight is probably due to the variables I mentioned in the first paragraph) compared to 3600lbs/3655lbs of M2C.

2019 M2 Competition
--------------------------




2019 M4
--------------------------

[M3_WC]

Interesting.

[ChrisK]

Thank you, thank you!

I have been saying this all along. The M3/M4 is heavier, especially if you choose ZCP!
666M wheels and the removal of the CF driveshaft are weight that BMW hadn't reported!

[M-Pilot]

Not to mention the slighly better weight distribution on the M2C...

[DieGrüneHölle]

Nice find. The additional weight on the 2019 M4 make sense.

[Fenerbahce]

The M4 weight may even be with the 18" wheels (rather than 19"), no? Sunroof could also further muddy waters, but I'm guessing neither include it (although take rate on M2 will likely be higher since you aren't forgoing a CF roof and that could have forced BMW to include it in the weight).

I would love to see someone eventually put both on scales (and back to back dyno with same wheels while at it)!

[Remonster]

The drawing of the M4 shows the base wheels but US curb weight is calculated using options that the majority of owners (or dealers) are expected to spec on their cars. I don’t know if BMW’s prediction that most people would opt for the Competition Package has come true, a lot of dealers seem to order most of their cars without ZCP but I have no data one way or the other. Would be nice to know which wheels are included in that M4 spec but I think it’s safe to say M2 Competition is a hair lighter than M4 expecially in the US where the heavy 788M wheels and big brakes are standard.

[M-Pilot]

Originally Posted by Fenerbahce

The M4 weight may even be with the 18" wheels (rather than 19"), no? Sunroof could also further muddy waters, but I'm guessing neither include it (although take rate on M2 will likely be higher since you aren't forgoing a CF roof and that could have forced BMW to include it in the weight).

I would love to see someone eventually put both on scales (and back to back dyno with same wheels while at it)!

Yes, thought about 18" 540m wheels too but wasn't sure what wheels BMW decided to use in their weight calculation at the launch... Just to give an idea 666Ms weigh a total of 22lbs more than 18" 540Ms. So you might be right...

[M-Pilot]

Originally Posted by Remonster

The drawing of the M4 shows the base wheels but US curb weight is calculated using options that the majority of owners (or dealers) are expected to spec on their cars. I don’t know if BMW’s prediction that most people would opt for the Competition Package has come true, a lot of dealers seem to order most of their cars without ZCP but I have no data one way or the other. Would be nice to know which wheels are included in that M4 spec but I think it’s safe to say M2 Competition is a hair lighter than M4 expecially in the US where the heavy 788M wheels and big brakes are standard.

Maybe not when the Comp Pack first came out but right now I see the majority of the in stock M3/M4s are equipped with ZCP.

[boostm3]

Isnt this all kind of splitting hairs? Is anybody going to notice a 20-25lb weight difference?

[Absurdium]

One thing though is that the M2C is pictured with the smaller wheels, vs. the 20 inch. I know this is different than in the states, but in Canada the bigger wheels and bigger brakes are standard on the M2C. I would assume those would add weight that is equivalent to the 666M wheels on a M4 ZCP, and another 10 lbs from the bigger brakes. All things considered, I'd say the two cars are practically identical to weight and it really comes down to the options on either vehicle. I think the unfortunate take away is that the much smaller car (dimensions wise) is weighing the same as its bigger brother. Fortunately, this doesn't seem to matter after reading the reviews that all came out today.

One thing I am pleasantly surprised though is the weight distribution of the M2. I thought the heavier S55 would screw up the weight distribution putting too much weight in the front yet it's still better (albeit marginally) than M4. This is definitely going to be a popular car and one to watch out for on track days!

[M-Pilot]

Originally Posted by boostm3

Isnt this all kind of splitting hairs? Is anybody going to notice a 20-25lb weight difference?

It's not about noticing 25lbs difference. I bet most people on this forum wouldn't even notice the 150lbs difference as well. This thread is rather about certain members (that I won't name here) constantly bitching and claiming M2C weighs more than an M3/M4.

[boostm3]

Originally Posted by cntzl

It's not about noticing 25lbs difference. I bet most people on this forum wouldn't even notice the 150lbs difference as well. This thread is rather about certain members (that I won't name here) constantly bitching and claiming M2C weighs more than an M3/M4.

Gotcha.. in the end, its a distinction without a difference. For all intents and purposes, they weigh the same.

[10"]

Not all weight is the same.

Unsprung weight is a killer. You will feel it. 1 lb of unsprung weight equates to about 7 lbs of weight you can FEEL.

So if you add 30 lbs to wheel and brake weight you are adding what feels like over 200 lbs...

Adding weight below the suspension is a sure fire way to make the car feel heavy...

[M-Pilot]

Originally Posted by 10"

Not all weight is the same.

Unsprung weight is a killer. You will feel it. 1 lb of unsprung weight equates to about 7 lbs of weight you can FEEL.

So if you add 30 lbs to wheel and brake weight you are adding what feels like over 200 lbs...

Adding weight below the suspension is a sure fire way to make the car feel heavy...

Glad you pointed it out. Exactly why I invested in a lighweight brake kit and 763M wheels that together will shave off 72lbs unsprung weight off of my M2C. So according to your equation, I should feel around 500lbs weight reduction.

[hellrotm]

Originally Posted by boostm3

Isnt this all kind of splitting hairs? Is anybody going to notice a 20-25lb weight difference?

Sure, it’s rather inconsequential as the car is getting 4.5+ star ratings. So clearly M has hidden weight well. The M2C vs M4 weight was go to for the trolls.

[10"]

Originally Posted by cntzl

Glad you pointed it out. Exactly why I invested in a lighweight brake kit and 763M wheels that together will shave off 72lbs unsprung weight off of my M2C. So according to your equation, I should feel around 500lbs weight reduction.

Well it will make a huge difference compared with stock for sure...

[RocketBoots]

Originally Posted by cntzl

Glad you pointed it out. Exactly why I invested in a lighweight brake kit and 763M wheels that together will shave off 72lbs unsprung weight off of my M2C. So according to your equation, I should feel around 500lbs weight reduction.

What lightweight brake kit are you referring to?

[Rupes]

Fantastic news guys! I have found a way to quickly and very affordably drop over 100 pounds just in the wheels and brakes alone. This equates to 700 pounds of unsprung weight using the 7x modifier mentioned above.

I found these 19 inch rims online and they are incredibly lightweight! Why hasn't anyone else posted about these?! Not sure I like the finish, but figure I can paint them if I'd like. Also, can't tell from the eBay listing if these include the integrated brake on the wheel hub - check back later for more details. If not, I'm thinking of going with no brakes for additional weight savings. Even better - I can sell the OEM wheels and pocket a few bucks after this mod is complete. Let me know what you think, group buy maybe?

[seis-speed]

Originally Posted by cntzl

It's not about noticing 25lbs difference. I bet most people on this forum wouldn't even notice the 150lbs difference as well. This thread is rather about certain members (that I won't name here) constantly bitching and claiming M2C weighs more than an M3/M4.

Members have proven weights of M3’s around 3400 lbs.

With the new steel driveshaft and Comp package maybe the 2019M4 is this heavy.

Why is BMW moving backwards? Why would a US car get a steel driveshaft? There is no reason, but guess what, it is happening and the steel part is a fraction of the price to BMW.

I personally see NO issue with people calling out BMW for adding weight to save money. The new G80 is supposedly going to weigh less than the F80, it will be interesting to see what figures they base that on? A 2015 F80 or an end run production F80.

BMW looks at the boards, and people have a right to let them know how they feel, IMO. Some people put cool wraps on their cars, others do weight savings builds, depending on the person and what matters to them.

M2C is going to be great!! I give BMW credit!!

[M-Pilot]

Originally Posted by RocketBoots

What lightweight brake kit are you referring to?

Essex AP Racing Radi-CAL 9660 (front) and 9449 (rear).

[Fenerbahce]

Originally Posted by Rupes

Fantastic news guys! I have found a way to quickly and very affordably drop over 100 pounds just in the wheels and brakes alone. This equates to 700 pounds of unsprung weight using the 7x modifier mentioned above.

I found these 19 inch rims online and they are incredibly lightweight! Why hasn't anyone else posted about these?! Not sure I like the finish, but figure I can paint them if I'd like. Also, can't tell from the eBay listing if these include the integrated brake on the wheel hub - check back later for more details. If not, I'm thinking of going with no brakes for additional weight savings. Even better - I can sell the OEM wheels and pocket a few bucks after this mod is complete. Let me know what you think, group buy maybe?

Haha, I can appreciate the spirit of this post. Folks need to enjoy the car for what it is. Maybe do some m-perf mods and call it a day. Not sure why anyone would bother swapping in small brakes for what will likely be an unnoticeable gain in performance. Even if you sell your original parts to offset the cost, you've molested the car at that point, and most others will not want to pay for a car with different brakes if you decide to sell later. People are getting into a manic state over all this weight talk