Curb weight w/ automatic and/or sunroof?

StickyPickle · 05-20-2023, 07:16 PM

So we’ve seen a few owners weight their M2s but I believe they’ve all been manuals and CF roofs. Any owners with automatic and/or sunroofs weigh theirs yet? Mine is manual and I know the automatic and the sunroof are supposed to add roughly around 50lbs each, give or take a few pounds, but I’m just curious.

Ravenseal · 05-20-2023, 07:19 PM

Quote:

Originally Posted by StickyPickle

So we’ve seen a few owners weight their M2s but I believe they’ve all been manuals and CF roofs. Any owners with automatic and/or sunroofs weigh theirs yet? Mine is manual and I know the automatic and the sunroof are supposed to add roughly around 50lbs each, give or take a few pounds, but I’m just curious.

3,850~ with automatic and sunroof.
3,814~ with automatic and carbon roof.
3,754~ with manual and carbon roof.

M_Power Rob · 05-20-2023, 08:15 PM

Quote:

Originally Posted by Ravenseal

3,850~ with automatic and sunroof.
3,814~ with automatic and carbon roof.
3,754~ with manual and carbon roof.

Where are those figures from?

zero21 · 05-20-2023, 08:37 PM

3754 is a bit generous with 90% fuel. Maybe with carbon buckets you're looking at 3740ish. I would put manual and carbon roof at 3765.

StickyPickle · 05-20-2023, 08:57 PM

Quote:

Originally Posted by zero21

3754 is a bit generous with 90% fuel. Maybe with carbon buckets you're looking at 3740ish. I would put manual and carbon roof at 3765.

Right, which is pretty much why I started this thread. I remember the weights for a couple of owners with CF roof and manual when they put theirs on scale and they were a bit more than what BMW has published so I was curious how much do the sunroof and automatic really add on irl.

Ravenseal · 05-20-2023, 10:26 PM

Quote:

Originally Posted by M_Power Rob

Where are those figures from?

This forum, mostly.

babym_gen · 05-21-2023, 12:39 AM

Quote:

Originally Posted by Ravenseal

This forum, mostly.

The ZF8 doesn't add that much weight.
Jackie weighted his car at 3778lbs:
https://g87.bimmerpost.com/forums/sh...0&postcount=48

The auto is the option to pick for extracting the maximum amount of performance from this car.

VIERsr · 05-21-2023, 01:49 AM

Figures for the M3/4:
- Automatic gearbox +25kgs
- Sunroof + 23kgs over the carbon roof, + 6kgs over the steel roof (only M2)
- Bucket seats -10 kgs (note that the M3/4 comes with the M Sport seats as standard).
https://www.bmw-m.com/en/topics/maga...ce-weight.html
In Europe the sunroof is not standard and the claimed weight for the manual M2 is 1700kgs.

Ravenseal · 05-21-2023, 03:45 PM

Quote:

Originally Posted by babym_gen

The ZF8 doesn't add that much weight.
Jackie weighted his car at 3778lbs:
https://g87.bimmerpost.com/forums/sh...0&postcount=48

The auto is the option to pick for extracting the maximum amount of performance from this car.

The sunroof doesn't weigh 70lbs either, so obviously these figures aren't controlled for fuel weight. If someone wants to go out and buy all 5 configurations of the car and weigh them side by side, knock yourselves out. Lol. I've only provided what I've seen on here. I never claimed it was the absolute truth.

zero21 · 05-21-2023, 09:37 PM

Quote:

Originally Posted by babym_gen

The ZF8 doesn't add that much weight.
Jackie weighted his car at 3778lbs:
https://g87.bimmerpost.com/forums/sh...0&postcount=48

The auto is the option to pick for extracting the maximum amount of performance from this car.

Jackie weighed his at 50% fuel, which isn't the standard measure in the US; 90% is.

Axylus · 05-28-2023, 07:49 PM

Genuine question here, does shaving off 40-100 pounds do anything for the car? I feel it’s such a small percentage of the overall weight that it’s effect is negated

m2ss · 05-28-2023, 08:08 PM

Quote:

Originally Posted by Axylus

Genuine question here, does shaving off 40-100 pounds do anything for the car? I feel it’s such a small percentage of the overall weight that it’s effect is negated

It depends...are you Randy Pobst?

Ravenseal · 05-28-2023, 11:37 PM

Quote:

Originally Posted by Axylus

Genuine question here, does shaving off 40-100 pounds do anything for the car? I feel it’s such a small percentage of the overall weight that it’s effect is negated

If they lower unsprung mass and/or center of gravity, absolutely. My goal is to lose 20lbs this summer

VIERsr · 05-29-2023, 02:27 AM

It depends on where and how, it could even be worse.
For example, some geniuses use to reduce weight only at the rear, which is pretty easy (titanium muffler, lithium battery, removal of the rear seats), but then you screw up the weight balance and lose a lot of grip at the rear, decreasing traction and stability at high speeds.
Most of the benefits come from the reduction of unsprung weight, 30 pounds can be saved very easily; the same amount of weight saved with a titanium exhaust would not be noticeable and would probably be more expensive.

05-20-2023, 07:16 PM	#1
StickyPickle Captain 1622 Rep 785 Posts Drives: NA Join Date: Nov 2021 Location: NA iTrader: (0)	Curb weight w/ automatic and/or sunroof? So we’ve seen a few owners weight their M2s but I believe they’ve all been manuals and CF roofs. Any owners with automatic and/or sunroofs weigh theirs yet? Mine is manual and I know the automatic and the sunroof are supposed to add roughly around 50lbs each, give or take a few pounds, but I’m just curious.
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05-20-2023, 08:37 PM	#4
zero21 Lieutenant Colonel 3276 Rep 1,843 Posts Drives: G87 sold Join Date: Nov 2022 Location: Charleston, SC iTrader: (0)	3754 is a bit generous with 90% fuel. Maybe with carbon buckets you're looking at 3740ish. I would put manual and carbon roof at 3765.
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05-21-2023, 01:49 AM	#8
VIERsr Major 2657 Rep 1,474 Posts Drives: BMW M2 Join Date: Apr 2018 Location: Zurich iTrader: (0) Garage List 2019 M2 Competition [0.00]	Figures for the M3/4: - Automatic gearbox +25kgs - Sunroof + 23kgs over the carbon roof, + 6kgs over the steel roof (only M2) - Bucket seats -10 kgs (note that the M3/4 comes with the M Sport seats as standard). https://www.bmw-m.com/en/topics/maga...ce-weight.html In Europe the sunroof is not standard and the claimed weight for the manual M2 is 1700kgs.
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05-28-2023, 07:49 PM	#11
Axylus Private First Class 49 Rep 158 Posts Drives: '23 M2 (waiting) Join Date: Apr 2023 Location: South iTrader: (0)	Genuine question here, does shaving off 40-100 pounds do anything for the car? I feel it’s such a small percentage of the overall weight that it’s effect is negated
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05-29-2023, 02:27 AM	#14
VIERsr Major 2657 Rep 1,474 Posts Drives: BMW M2 Join Date: Apr 2018 Location: Zurich iTrader: (0) Garage List 2019 M2 Competition [0.00]	It depends on where and how, it could even be worse. For example, some geniuses use to reduce weight only at the rear, which is pretty easy (titanium muffler, lithium battery, removal of the rear seats), but then you screw up the weight balance and lose a lot of grip at the rear, decreasing traction and stability at high speeds. Most of the benefits come from the reduction of unsprung weight, 30 pounds can be saved very easily; the same amount of weight saved with a titanium exhaust would not be noticeable and would probably be more expensive.
	Appreciate 0 Quote