Geez, how do you do that? I'm currently practising with the normal 787B (wanna use that one and don't have the 787B stealth) in its stock form (no turbos etc) and I lap around 3m36... There's no way I'm gonna win the 24h race with these lap times... I'm using racing hard tyres, maybe I'd better switch to softer tyres, hehe. What tyres are the AI using for the 24h Le Mans race?
Racing Mediums.
I'd say an average of around 3:34 not including pit laps would be fine so you're not too far off.