Weight gain of 203 Kilogramm? Did I read that right?
Stop. We need to wait for independant measurement, imho.
E.g. for a reference point like sport auto, which do the weighting always with full tank, no driver.
In the cited video from JP, where the G8x presentation did take place in the M studio in Garching at the M GmbH, the G8x project lead said:
It is possible to get the G82 Competition down to a weight of 1700kg. But not below this.
So chosing the track pack with bucket seats and CCB and avoiding other more heavy addons should get you there.
IF this would be true - which remains to be seen - then we talk about a weight increase of about 70kg!
My reference is a F82 Comp. With DCT and OPF (which also means no carbon prop shaft anymore) which tipps the scale around 1630kg (full tank, no driver).
When asked about the reason of this weight gain, they were a bit "evasive" ... they said, if you look at the G8x from underneath, you would understand, looking at the extensive measures being taken to maximaze stiffness to a new dimension ...
Since F8x already was quite stiff, I don't know how realistic this is, that they added 50kg of strut bracings, etc.
Another thing was interessting. When asked, why the U-form carbon brace in the engine bay has been replaced with steel braces, they did give explicit answers:
1. They also looked at carbon braces.
2. They are worse in case of certain torsional impacts, which they have to deal with in G8x, where the used steel braces perform better
3. They are using hollow steel braces, so weight is almost no issue.