Pick a car, pick a track, drag the fuel slider. Watch how every liter changes acceleration, braking, cornering, center of gravity, and tire grip in real time.
Gasoline density is 0.745 kg/L. A 100L tank weighs 74.5 kg full.
Less mass = more acceleration from the same power. Every kg burned increases acceleration.
mu = grip coefficient, g = 9.81, r = corner radius. Lighter car gets higher effective mu due to tire load sensitivity.
In theory mass cancels. In reality, brake fade and tire deformation add weight dependency.
Parabola peaking at 50% fill. Half-tank = maximum slosh.
Tires produce less grip per kg as load increases. Uneven weight distribution always reduces total grip.