At What Speed Can an F1 Car Stay Upside Down?

Do you often drive F1 cars upside down in tunnels?

If so, bad news: in 2026, you’ll need +11.7 km/h for the car’s downforce (upforce?) to match its weight!

2026 cars are 20kg lighter (-2.5%) than 2025s, but have ~13% less downforce. The latter prevails: the speed needed to equate its weight increased from 199.7 km/h to 211.4 km/h → slower in high-speed corners, lower g-forces.

In reality, 211.4 km/h would only let you drive upside down very briefly: at that speed, downforce=weight →No normal force and thus traction! Drag would slow the car down → downforce drops → you fall!

In order not to fall, you would need enough downforce to produce enough rear longitudinal force to overcome drag.

[CFD analysis via @Air_Shaper]