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      01-11-2021, 01:12 PM   #30
swagon
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Drives: F80 6MT
Join Date: Jun 2013
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Quote:
Originally Posted by Boss330 View Post
BMW used the term "Leergewicht DIN" on the F8x when the 1495kg curb weight was stated. I believe it was confirmed that this weight was with the DIN definition with no driver and no fuel. Hence the very low curb weights on the F8x, which no one really saw in real life (hence the 1640kg F82 M4 Comp DCT in the video).

I think that in order to be apple to apple you need to subtract both fuel and driver (75kg) when comparing to the F8x

Also, according to the definition on mass in running order for Europe optional equipment is not included.

This means that in your calculation you need to subtract 10kg from the 1660kg since tha car has the optional CF buckets (not add 10kg for the std seats) and also subtract weight loss for CCB (if the G82 was equipped with that option, which it probably was since he stated it was a "light build"). And then the weights start to add up for the G82...

BMW probably was a bit short sighted when they claimed the "sub 1500kg" curb weight of the F82 and using a dry weight with no driver. The F8x was actually heavier in real life and, as it seems now, not that much lighter than the G8x. But BMW managed to create a hype around the F8x being more lightweight than it in reality was it seems... Which now comes back to haunt them whith the G8x and use of conventional definitions on curb weights (wet weight w/driver).

So now, BMW spins it the other way with showing that the F82 really wasn't thaaat lightweight...

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Weight figures of the base models were pulled from the available press materials on press.bmwgroup.com which all use the same method, i.e. DIN and EU/"Leergewicht EG". F82 09/2018 (post WLTP), G82 09/2020

DIN weight, as I eluded in my previous post, features a car in running order with 90% fuel and no optional equipment; EU/EG-Leergewicht weight adds 75 kg to that number. That means there is no need to add 10 kg (standard seats) to the 1,660-kg "base" M4. If 1,630 kg is what an M4 weighs with buckets, then you just add ca. 10 kg to that figure and you've got a car with standard seats. I did not see CCBs in the video, it is possible it had them; no argument here.

BMW Deutschland use EG-Leergewicht in their brochures. Standard equipment varied a lot on the F8x M3/4 which is why I highlighted some of the standard German features. Some markets got manual seats, base iDrive without sat nav, etc.

However, it is safe to say that BMW high-key pulled a Ferrari on us with the original weight figures of the F8x. Somehow the DCT lost weight over the years, too.

03/2014 (all DIN, 6MT/DCT)
F80: 1,520/1,560 kg
F82: 1,497/1,537 kg

01/2015 (Competition Package)
F80: 1,535/1,560 kg
F82: 1,515/1,540 kg

09/2018 (OPF, no CF driveshaft, non-Competition)
F80: dead
F82: 1,570/1,595 kg

Head hurts from these numbers, am out.
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