Tyre Delta in F1: What It Means & Why It Matters

A tyre delta is the difference in lap time performance between two different tyre compounds under the same conditions. For example, if a soft tyre is one second per lap faster than a medium on a given circuit, the tyre delta between those two compounds is one second. Teams use this figure to calculate whether it is worth making an extra pit stop — if the pace gain from fresher or faster tyres outweighs the time lost in the pit lane, a stop is worthwhile. The tyre delta is a crucial number in strategy calculations.

Example: The soft tyre delta here is enormous — the team are calculating whether a second stop is justified to take advantage of it.