There is a difference between discussing performance and bragging about racing on a public highway.
These kind of discussions can lead severe legal implications for both the original poster and potentially the site, so it is a site rule that posts like "I was doing 100000000mph against a SLR on the M6......." are removed and OP warned about these kind of posts.
You may think this is a load of BS, but a number of people on this site know a guy who is currently serving lengthy driving ban due to something posted on the internet.
Sorry but if you don't follow the site rules your posts will be moderated or removed.