Hello together, I was at a car dealer in Mainz the days when I came in there tell me a friendly staff member that my tyre profile depth is not good anymore. When I asked him where he knew that, he said his computer would have told him that. In short, I drove on the driveway to the grounds over a system that scanned my tyres. So I could call the exact condition of my tyres without even having a staff member near my car. I find this very interesting, how far the technology is today. I also had the company mentioned directly, because I wanted to know how this works. Here you can also look at it is really interesting but to explain that would take too much time (www.procontour.com). VG