The tools the race engineer has at his disposal are what we call the set-up parameters: that’s the front and rear spring rates, the roll bar stiffness, the damper settings, the wing settings, the ride-heights, the camber, caster and toe-in or toe-out of the wheels, gear ratios, etc. It’s all about trying to find the right set-up for the car, the driver – each driver has his own race engineer – and the circuit.