Tyre Compounds

Tyre compound selection is one of F1's most strategic variables. Unlike most motorsport categories where all cars run identical compounds, F1 teams choose their starting compound at each Grand Prix — and that choice cascades through pit stop timing, fuel loads, and race pace management.

The Pirelli Range

Pirelli produces five dry-weather compounds for F1, designated C1 through C5. C1 is the hardest (least grip, longest life), C5 is the softest (maximum grip, shortest life). For each race, Pirelli nominates three compounds — typically the "Hard" (hardest of the three), "Medium," and "Soft" — from whatever subset of C1-C5 fits the circuit's demands.

Circuit Matching

High-load circuits (Silverstone, Barcelona) that generate high tyre temperatures through sustained high-speed corners receive harder compounds (C1-C2 range). Low-speed street circuits (Monaco, Singapore) with low energy input receive softer compounds (C4-C5). The goal is to arrive at a similar tyre life across the range — a compound that lasts 20-25 laps in each specification.

Temperature Windows

Each compound has an optimal operating temperature range — typically 80-110°C for the compound surface. Below the window, grip is insufficient (cold tyre snap on initial laps). Above it, rubber overheats, grains, and blisters, degrading rapidly. Managing tyre temperature is a fundamental driver skill and car setup discipline.

Degradation vs. Wear

Two distinct tyre failure modes: physical wear (tread depth reduction — predictable) and thermal degradation (surface chemistry breakdown — sudden and unpredictable). Most strategic calls are made around degradation rather than wear. A car "falling off a cliff" has crossed its thermal threshold; a "cliff" that predictably occurs at lap 18 can be planned around.