I am running my ERA FIA #2081 with Avon tyres, front 245/60, rear 275/55 and am fully satisfied. The best tyre for fast cornering - really sticky on dry roads in all load situations. Small disadvantage: steering in serpentines requires a little effort (in the long run
), next time I might try a smaller one.
Anyhow, the front tyre has enough space in the cut-out, even with full steering angle.
Regards, Matthias