Hi! I'm converting a Diablo SV, which, according to Lamborghini's website should achieve 97km/h in 1st gear. But with the correct gear and diff ratios, I can do 170km/h in 1st gear in Racer. I'm tired of searching for the source of this problem, but unsucessfully. The 3d model (and therefore the wheel radius) is correctly scaled also! Does anyone know how to fix this? :frown: