Ran a few online races before in the historic F3 mod, having a play with a few various things. The flatspots work and after abusing the tyres over a 20 minute race, they were cactus by the end. Quite happy with how the tyre wear is working, thumbs up . What I found most impressive was the FFB vibration becoming worse as the tyre became more and more 'flatspotted'. I seriously abused the tyres (accelerating with locked brakes, slamming on brakes at speed etc.). Through the corners whilst loading up the tyres, the FFB of my steering wheel was oscillating in what I would consider a very realistic manner. Very cool. (Edit: I am using a Logitech G27) However a few observations I noticed: 1. The vibration from badly flatspotted tyres does not occur when driving in a straight line. I believe this to be incorrect. If you imagine a flatspot on a tyre like being a 50c/p piece, the vibration should be felt regardless of the tyre being loaded laterally through a corner or longitudinally on a straight. I can only assume that the vibration is only felt in the corners because that's when the FFB is being applied to the steering wheel. On a straight, there is very minimal FFB being applied hence the vibration is masked as nothing by the low FFB effects. Not sure how you could get around that? 2. (This is a nice to have). After a tyre has been flatspotted, the next time you lock up the tyre will tend to find the flatspot and lock at this point again, making the flatspot worse. It tends not to create another flatspot elsewhere on the tyre (it happens but is less likely). Realistically, if you had 3 flatspots (small, medium, large), the largest flatspot will get increasingly get worse at a higher rate than the middle and similarly both at higher rates than the smallest. Not sure how possible this is to model in the game, and like I said, it's purely a nice to have. Ultimately, even if the above two points are not possible, from what I tested tonight, I'm quite happy with how rF2 treats flatspots. Definitely have to watch those lock-ups in a race!