Okay, I just put about 40 laps down, and at least while alone on the track I should be able to lap between 12.50 and 13.50 quite consistently. My best so far was a 12.38. Tyres shouldn't be a problem at all, and unless you're sliding around all the time, I guess the only car that could manage to be tyrefriendlier would be the FXR on R4 tyres. The front right will have a few hotspots, but nothing problematic.
So, everything should be fine - until I screw up a downshift and take out half of the field, that is.