What each change takes from somewhere else
Every gain is paid for somewhere else: in heat, in compliance, in durability, or in the fuel the map quietly assumes. Four guides on the exchange made at each corner of the car.

Cooler and pipework. Boost is a heat problem wearing a power figure.
Everything in this section
- 01What each change takes from somewhere elseEvery gain is paid for — in heat, in compliance, in durability, or in the fuel the map assumes.
- 02Forced induction is a heat problemCharge cooling and knock margin decide what boost is usable long before the turbocharger does.
- 03Suspension is geometry before it is stiffnessLowering a car changes roll centres and camber curves, and most road cars give up compliance rather than gain grip.
- 04Brakes are heat capacity, not stopping powerA bigger disc does not stop harder once; it stops the same repeatedly without fading.
The other three sections