825M v. 930 Wheels Weights ... The Bare Truth

M2PDX · 12-05-2023, 05:37 PM

Swapping the cast 930s out for forged 825Ms (Which came in bi-color, and I had powdercoated black).

Couple of observations:

First, the 930s are identical copies of the 825s. I knew they were close, but not identical.

Second, the weight difference is pretty shocking. You can tell as soon as you lift them.

Third, this may be an interim step. Might go with even lighter wheels down the road, but I like the look of the 825Ms.

First two pictures are the 930s on the scale (in lbs).

Second two pictures are the 825Ms.

It's interesting that the 930s are heavier than earlier reported, AND that the ratio of increased weight is a bit higher for the 20 inch 930s.

AZG87 · 12-05-2023, 11:16 PM

Love the weight savings but still has the spoke design that is a PITA to clean since it's identical to the oem lol.

matty_f · 12-05-2023, 11:44 PM

Nice comparison and thank you for posting. I know rotational mass is the best place to remove, but I can’t tell how good that is from a $/lb perspective. Can you feel the difference?

M2PDX · 12-06-2023, 12:29 PM

Quote:

Originally Posted by matty_f

Nice comparison and thank you for posting. I know rotational mass is the best place to remove, but I can’t tell how good that is from a $/lb perspective. Can you feel the difference?

AZG: Yes, definitely a pain, but I ceramic coated them before install!

Matty: I added a KW HAS kit first, and noticed an immediate improvement in steering feel and the car felt much more planted. The wheel swap was less dramatic, but definitely feels more nimble. My next step is installing a set of Dinan monoballs!

The car was already fabulous stock. Now it is more fabulous!

Ravenseal · 12-06-2023, 02:48 PM

I feel like you have to save 7-10lbs per wheel in order to really feel it. At least that was my experience with my previous wheel swaps. Apex has wheels as low as 19lbs in the front.

M2PDX · 12-10-2023, 01:16 AM

Quote:

Originally Posted by Ravenseal

I feel like you have to save 7-10lbs per wheel in order to really feel it. At least that was my experience with my previous wheel swaps. Apex has wheels as low as 19lbs in the front.

Apex makes great wheels!

I have them on my e36 M3.

Hopefully they come out with additional designs soon.

apez · 12-11-2023, 03:31 PM

Quote:

Originally Posted by M2PDX

Apex makes great wheels!

I have them on my e36 M3.

Hopefully they come out with additional designs soon.

100 times this. I loved the light weight VS-5RS I had on my G42 (still for sale btw), but I think for the M2 something slightly more substantial looking would be nice. I would be all over the EC7-RS if it fit.

Bumpinjeep · 12-14-2023, 01:40 PM

Thanks for doing this. I really like the way the stock 930s look so getting the same wheel with a bit less weight is at least a nice option to have. I believe the 825s are flow formed and not truly forged, you can for sure go with a true forged wheel and save some more weight but in terms of design, I think BMW really knocked this one out of the ballpark.
They are a PITA to clean though and I love having clean cars.

12-05-2023, 05:37 PM	#1
M2PDX Lieutenant Colonel 2942 Rep 1,611 Posts Drives: 2017 M2 Join Date: Aug 2013 Location: Portland, Oregon iTrader: (0)	825M v. 930 Wheels Weights ... The Bare Truth Swapping the cast 930s out for forged 825Ms (Which came in bi-color, and I had powdercoated black). Couple of observations: First, the 930s are identical copies of the 825s. I knew they were close, but not identical. Second, the weight difference is pretty shocking. You can tell as soon as you lift them. Third, this may be an interim step. Might go with even lighter wheels down the road, but I like the look of the 825Ms. First two pictures are the 930s on the scale (in lbs). Second two pictures are the 825Ms. It's interesting that the 930s are heavier than earlier reported, AND that the ratio of increased weight is a bit higher for the 20 inch 930s. Attached Images __________________ '17 M2 San Marino Blue, 6MT; 2011 335iS, 2007 328i, 19 Ram 1500, '18 Yamaha MT-07, '14 Kawasaki Ninja 1000. SOLD: '16 European Delivery M3 San Marino Blue, 6MT. '13 335iS, 2002 M3 6MT, 1997 M3, 1998 M3, 1996 328is (picked up in Munich at OLD ED Center), '88 Mustang GT 5.0, '84.5 Mustang SVO Turbo, '77 Rabbit,a cool 1992 Taurus SHO, and KTMs.
	Appreciate 9 M2siast5876.00 CadolinaRipr319.00 AZG87965.50 ToneM2148.50 rons e921397.00 BMR.WRLD255.00 e90ftw38.50 JTO245276.00 Ravenseal2747.50 Tweet Quote

12-05-2023, 11:16 PM	#2
AZG87 Captain 966 Rep 843 Posts Drives: G87, 2018 Mustang GT traded in Join Date: May 2023 Location: AZ iTrader: (0)	Love the weight savings but still has the spoke design that is a PITA to clean since it's identical to the oem lol.
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12-05-2023, 11:44 PM	#3
matty_f on restriction from buying more cars 239 Rep 186 Posts Drives: 24 M2, 18 GT3T, 16 LR4, 67 912 Join Date: Sep 2017 Location: Pasadena, CA iTrader: (0)	Nice comparison and thank you for posting. I know rotational mass is the best place to remove, but I can’t tell how good that is from a $/lb perspective. Can you feel the difference?
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12-06-2023, 02:48 PM	#5
Ravenseal Lieutenant Colonel 2748 Rep 1,750 Posts Drives: 2023 M2 6MT Join Date: Jan 2016 Location: Denver iTrader: (0)	I feel like you have to save 7-10lbs per wheel in order to really feel it. At least that was my experience with my previous wheel swaps. Apex has wheels as low as 19lbs in the front. __________________ 2023 G87 M2 - Toronto Red \| 6MT \| M HAS \| CF Roof \| BMW 826M Forged Wheels \| Mishimoto Skid Plate \| Active Autowerks Single Midpipe Retired: 2022 M240i xDrive \| 2021 Audi RS5 \| 2019 Camaro 2SS 1LE 6MT \| 2016 428i GC \| 2011 BMW 335is
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12-14-2023, 01:40 PM	#8
Bumpinjeep Colonel 5531 Rep 2,291 Posts Drives: 2023 M2 Join Date: Mar 2017 Location: Redmond, WA iTrader: (0) Garage List 2023 M2 [8.00]	Thanks for doing this. I really like the way the stock 930s look so getting the same wheel with a bit less weight is at least a nice option to have. I believe the 825s are flow formed and not truly forged, you can for sure go with a true forged wheel and save some more weight but in terms of design, I think BMW really knocked this one out of the ballpark. They are a PITA to clean though and I love having clean cars. __________________ Present: 2023 M2 BSM W/Carbon everything, 6 Speed Past:2020 M2C HS Executive, 6 Speed
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