I have received a first hand confirmation from people present at the launch that the BMW press release is factually correct. The accident was definitely not caused by excessive speed. So unless the person who came up with the 160kph figure can back it up, this whole discussion is pointless.
Today I actually spoke to someone involved with the launch.
The 160km/h bit is hogwash.
So I lay down this challenge: If you have any proof of this, please contact the relevant police in that area to assist with their investigation. Your help to expose this case of reckless riding would be highly appreciated.

If you cannot provide proof or aren't willing to testify then please butt out. As for those reacting on rumours, I have already stated my sentiments.