[swagon]

824M

9.5x18 ET20: 9.8 kg / 21.6 lbs

10.5x19 ET20: 11.1 kg / 24.5 lbs

825M

9.5x19 ET20: 11.0 kg / 24.3 lbs

10.5x20 ET20: 12.3 kg / 27.1 lbs

826M

9.5x19 ET20: 10.8 kg / 23.8 lbs

10.5x20 ET20: 11.5 kg / 25.4 lbs

829M

9.0x19 ET20: 15.0 kg / 33.1 lbs

9.5x19 ET20: 15.0 kg / 33.1 lbs

963M M Performance

9.5x19 ET20: 9.5 kg / 20.9 lbs (9.9 kg / 21.8 lbs)

10.5x20 ET20: 10.5 kg / 23.1 lbs (10.9 kg / 24.0 lbs)

1000M M Performance

9.5x20 ET20: 10.5 kg / 23.1 lbs (12.1 kg / 26.7 lbs)

10.5x21 ET20: 11.5 kg / 25.4 lbs (12.7 kg / 27.9 lbs)

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Part numbers for M Performance wheels

963M frozen gunmental

F 36108746989

R 36108746990

1000M black matt

F 36109502044

R 36109502045

1000M goldbronze matt

F 36108746991

R 36108746992

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Part numbers for 829M winter wheels

829M black matt

F 36108093844

R 36108093845

829M is the recommended winter wheel set and is cast alloy, thus much heavier.

[Draper]

Here's info on the M4 CSL (827M) wheels for those interested.

9.5x19 ET20: 23.8 lbs
10.5x20 ET20: 24.2 lbs

https://g80.bimmerpost.com/forums/sh....php?t=1937626

[swagon]

Originally Posted by Draper

Here's info on the M4 CSL (827M) wheels for those interested.

9.5x19 ET20: 23.8 lbs
10.5x20 ET20: 24.2 lbs

https://g80.bimmerpost.com/forums/sh....php?t=1937626

Thanks for the info.

Pretty impressive weight figure for a 20" BMW wheel.

[marconi118]

0.4 lbs weight difference between F and R seems odd to me
all other have at least 2lbs difference
I think the 24.2lbs for rear is wrong

1000M in 21 are not so bad... tempted to go 295/25/21 square F R

for 20/20 there are the 863M from M5 just need a 10-15mm spacer to get the right ofsett

[Draper]

Originally Posted by marconi118

0.4 lbs weight difference between F and R seems odd to me
all other have at least 2lbs difference
I think the 24.2lbs for rear is wrong

They're closing in weight than you might think.

Others report similar numbers.
https://g80.bimmerpost.com/forums/sh...4&postcount=52

https://g87.bimmerpost.com/forums/sh...1&postcount=11

[M3SQRD]

WOW!! The weight of the 829M winter wheels is absurd - 33.1 lbm/wheel

The front and rear are narrower by 0.5” and 1.0”, respectively, yet they’re still way heavier. Ride quality is going to suck with those wheels and they probably bend easily. Inexpensive aftermarket wheels are a much better option for winter time.

[swagon]

Originally Posted by M3SQRD

WOW!! The weight of the 829M winter wheels is absurd - 33.1 lbm/wheel

The front and rear are narrower by 0.5” and 1.0”, respectively, yet they’re still way heavier. Ride quality is going to suck with those wheels and they probably bend easily. Inexpensive aftermarket wheels are a much better option for winter time.

I'd have to drive both forged summers and cast winters back to back on the same tyre type to notice much difference from the wheels alone...

F8x winter wheels are also cast, made by Ronal.

[M3SQRD]

Originally Posted by swagon

I'd have to drive both forged summers and cast winters back to back on the same tyre type to notice much difference from the wheels alone...

F8x winter wheels are also cast, made by Ronal.

10-13 lbm increase in unsprung mass is significant. I can feel a change in ride quality on my f82 with 1/2 of that mass added. Also, driving f87s with and without the 2NH brake package have very difficult ride quality characteristics on bumpy roads.

[swagon]

Originally Posted by M3SQRD

10-13 lbm increase in unsprung mass is significant. I can feel a change in ride quality on my f82 with 1/2 of that mass added. Also, driving f87s with and without the 2NH brake package have very difficult ride quality characteristics on bumpy roads.

I'm swapping wheels this weekend so will pay extra attention!