I've just had a quick blast.
Le sarthe ( le mans )
Bmw m3 (bog standard in arcade mode) - 4m 23.390
Audi R8 (standard...as if it needs modifying?) - 3m11.419
Nurbugring
Bmw m3 - 7m 38.594
Audi r8 - 5m 45.932
Best I can do with a 'non-anologue' controller...my anologue one broke years ago and I've never been arsed to get it changed back.