How the simulation works
The car is modelled from your My Build specs: power drives a speed-dependent wheel force, weight resists it, and drivetrain sets launch traction (AWD hooks up hardest, then RWD, then FWD). Aerodynamic drag builds with speed squared. Off the line you're traction-limited; up top you're power-limited — just like the real thing.
Shifts matter: each gear pulls hardest near redline. Shift in the green window just before the limiter for a perfect shift; short-shift and the engine bogs below its powerband; hang on the limiter and you're burning time. Reaction time is scored separately from ET, exactly like a real time slip.
FAQ
Where does the car come from?
From My Build in your browser — its power, weight and drivetrain layout feed the physics. No build saved? You get a 300 hp / 1,400 kg demo car. Set up your real car in My Build and your bests are tracked per car.
Is the ET realistic?
It's a simplified longitudinal model — real launch technique, tires, weather and gearing all matter — but it lands in a believable window for a car of that power-to-weight and rewards the same things: reaction, launch and clean shifts.