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Racing Tyre Strategy: Compounds, Stints and the Two-Compound Rule

How tyre strategy works under F1's 2026 rules: soft, medium and hard compounds, the two-compound rule, set allocations, one-stop versus two-stop and wet tyres.

By Published 3 min read

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Key takeaways

  • Softer tyres give more grip but wear faster; harder tyres last longer but are slower. Strategy is choosing when to trade one for the other.
  • At each F1 event the supplier brings three dry specifications, named soft (red), medium (yellow) and hard (white), plus intermediate (green) and full wet (blue).
  • In a dry race, every driver must use at least two different dry specifications, so at least one pit stop is required.
  • Each driver gets a fixed allocation of sets for the weekend and must hand some back after each practice session, so every set run before the race is one fewer fresh set for it.
  • Planning a one-stop or two-stop race is a sum of pit-lane time lost against the lap time gained on fresher tyres.

In modern circuit racing, the car that is fastest over one lap does not always win. Tyres wear, lose grip and have to be changed, and when and how a team does that is tyre strategy. This guide uses Formula 1's 2026 rules, in Article B6 of the FIA's sporting regulations, and Wikipedia's history of F1 tyres.

The basic trade-off

Wikipedia states the principle simply: a harder tyre is more durable but gives less grip; a softer tyre gives more grip but is less durable. Everything else in tyre strategy follows from that.

Tyre Sidewall colour Grip Durability Typical use
Soft Red Highest Lowest Qualifying, short stints
Medium Yellow Middle Middle Flexible race stints
Hard White Lowest dry grip Highest Long stints
Intermediate Green Treaded, for wet conditions – Damp track, light standing water
Full wet Blue Treaded, for wet conditions – Heavy standing water

The colours, as Wikipedia explains, are relative: the supplier brings three dry compounds to each event, and whichever is softest that weekend is the "soft".

The rules that shape strategy

The 2026 regulations set out what each team works with:

  • What is supplied. At each event, three dry-weather specifications, one intermediate and one wet, each visibly marked; at some events, an extra specification may be made available.
  • What is allocated. The FIA's technical delegate allocates sets to each driver: at a standard event, 2 sets of the hard, 3 of the medium and 8 of the soft, plus 5 sets of intermediates and 2 of full wets. That is 13 sets of dry tyres at a standard event; at a sprint (alternative format) event the split is 2 hard, 4 medium and 6 soft, 12 in all. Once a set has left the pit lane, it counts as used, and fixed numbers of sets must be handed back after each practice session.
  • The two-compound rule. Unless a driver uses intermediate or wet tyres in the race, they must use at least two different dry specifications, and at least one must be a mandatory race specification nominated two weeks before the event.

The two-compound rule is why every dry race includes at least one pit stop. A team that ran a single set to the flag would break it.

One stop or two?

The decision is a sum. A pit stop costs the time to drive through the pit lane at its speed limit and to change tyres; fresh tyres then give back time on every lap until they too wear out.

A simplified example. Suppose a pit stop costs 22 seconds, and fresh tyres are worth an average of 0.5 seconds a lap over the next stint compared with nursing old ones.

Plan Extra stop costs Time gained on fresh tyres Net
Two-stop instead of one-stop, fresh tyres for the last 30 laps 22 s 30 × 0.5 = 15 s 7 s slower
Same, but fresh tyres are worth 0.9 s a lap 22 s 30 × 0.9 = 27 s 5 s faster

The numbers are illustrative, but the logic is real: the more tyres degrade, the more an extra stop pays. Traffic changes the sum, because new tyres are worth nothing stuck behind a slower car, and so do neutralisations, which make a stop cheaper; the safety car explained covers why.

When to stop: undercut and overcut

Timing a stop against a rival is its own art. Stopping first and using fresh-tyre pace to jump ahead is the undercut; staying out and gaining on old tyres while the rival is stuck behind traffic is the overcut. Undercut versus overcut works through both.

Qualifying shapes the race

Tyres are shared across the weekend. Every set used in practice or qualifying is one fewer fresh set for the race, and Wikipedia notes that at points in F1's history a set of the softest compound has been held back specifically for the top-ten shootout. Teams therefore plan qualifying runs with the race in mind; how racing qualifying works explains the session.

Rain resets everything

When the track is wet, the two-compound rule falls away and the question becomes when to switch between dry, intermediate and full wet tyres. Wet-weather racing covers the crossover points and the procedures for rain.

In Car Racing - Pro Career Racer, one of our sports career games, tyre wear, fuel, grip and pit stops are among the calls you make in each race; the game guide explains how they play out.

Good to know

Frequently asked questions

What is the difference between soft, medium and hard tyres?
Grip versus durability. Wikipedia explains that a harder compound is more durable but gives less grip, and a softer one gives more grip but wears faster. At each event, the softest of the three nominated compounds is the soft, with a red sidewall, the middle one the medium, yellow, and the hardest the hard, white.
Why must F1 drivers use two compounds?
Because the 2026 sporting regulations require it. Unless a driver uses intermediate or wet tyres during the race, they must use at least two different specifications of dry-weather tyre, at least one of which must be a mandatory race specification. That forces at least one pit stop in a dry race.
How many sets of tyres does each driver get?
It depends on the event format. At a standard event, the 2026 regulations allocate each driver 13 sets of dry tyres (2 hard, 3 medium, 8 soft), 5 of intermediates and 2 of full wets, through the FIA's technical delegate. A set counts as used once it leaves the pit lane, and some sets must be handed back after each practice session.
What are the green and blue tyres?
Wet-weather tyres. Wikipedia describes the intermediate, with a green sidewall, for damp tracks with light standing water, and the full wet, with a blue sidewall, for heavy standing water.

Sources

  1. 2026 F1 Regulations, Section B [Sporting], Issue 09 (Article B6 Tyre limitations) (opens in a new tab)Fédération Internationale de l'Automobile — accessed
  2. Formula One tyres (opens in a new tab)Wikipedia — accessed

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