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The Undercut Strategy Explained

The undercut is a pit strategy where a driver pits before their rival to gain track position through faster lap times on fresh tyres.

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The Details

What is an Undercut?

The undercut is one of F1's most common pit strategies. A driver pits earlier than planned (before their rival) to get fresh tyres. They then use the grip advantage to set faster lap times, hoping to emerge ahead when their rival finally pits.

How It Works

1. Driver A pits first - Gets fresh tyres 2. Driver A sets fast laps - Fresh tyres provide 1-2 seconds per lap advantage 3. Driver B pits later - Stays out on worn tyres 4. Position gained - If Driver A's fast laps offset the pit stop time, they emerge ahead

When It Works Best

The undercut is most effective when:

Tyre degradation is high (big speed difference between old and new tyres)
The pit lane is short (less time lost)
Track position is important (hard to overtake on track)

The Risk

If you pit too early, you might run out of tyre life at the end of the race. Teams constantly calculate whether the undercut window is open based on tyre wear rates and gaps.

Key Concepts

Pit Window

The range of laps when a pit stop is strategically optimal.

Tyre Degradation

The rate at which tyres lose grip over a stint.

Track Position

Where a car sits relative to others - being ahead is valuable because overtaking is difficult.

Real-World Example

At the 2019 Hungarian GP, Hamilton used a surprise undercut to jump Verstappen, pitting on lap 48 when no one expected it, and eventually winning the race.