Mercedes raised eyebrows in the Formula 1 paddock after sending both W17 cars onto the grid for the Canadian Grand Prix Sprint with used medium tyres. George Russell and Kimi Antonelli successfully held onto the top two positions at the start despite launching on tyres that had already completed six laps during Sprint Qualifying. While the decision initially looked risky, Mercedes had a very specific reason behind the strategy.
On paper, choosing used medium tyres for such a short race appeared counterintuitive. Conventional logic would suggest that fresh rubber offers maximum grip off the line, especially when defending against fast-starting rivals such as McLaren. Yet Mercedes deliberately sacrificed some theoretical peak grip at launch, and the gamble paid off.
George Russell and Kimi Antonelli managed to defend first and second place cleanly in the opening phase, keeping both McLaren drivers behind despite the papaya cars lining up directly behind them on the second row. Only later did the internal fight between the two Mercedes drivers prevent the Silver Arrows from fully capitalising on their early advantage.
Behind the scenes, Mercedes had been working extensively on one of the W17’s weak points. Following issues seen earlier in the season, particularly after Miami, the Brackley-based team focused heavily on improving launch performance and eliminating inconsistencies with clutch engagement during race starts.
Kimi Antonelli reportedly tested a redesigned, more ergonomic clutch paddle intended to help him find the optimal release point more consistently. The Sprint appeared to suggest that Mercedes had made genuine progress in this area, as both drivers made strong starts without the hesitation or launch problems that had previously compromised results.
But the bigger question remained: why use worn tyres instead of fresh ones?
The answer lies in the changing weather conditions at Circuit Gilles Villeneuve. Compared to Sprint Qualifying, track temperatures dropped significantly before the Sprint race itself. The asphalt temperature fell to around 32 degrees Celsius, approximately 10 degrees cooler than during the earlier qualifying session.
Mercedes engineers believed that under cooler conditions, bringing fresh tyres quickly into the optimal operating window could become more difficult, especially over such a short race distance where tyre preparation is critical from the opening lap.
Used tyres, having already gone through heat cycles, can sometimes reach their working temperature faster in cooler conditions. Mercedes’ concern was not just initial traction, but also avoiding potential graining while maintaining enough pace to keep the McLaren cars under control in the crucial early laps.
The strategy ultimately delivered the intended result.
McLaren team principal Andrea Stella acknowledged Mercedes’ advantage after the Sprint, saying: “We have to say that in the first part of the race, the Mercedes seemed to have the upper hand, so at the moment they clearly have a faster car. They were quicker yesterday in qualifying, and they were quicker today in the Sprint race. We will need to maximise the result in Canada and then focus on improving our car for the future.”
Andrea Stella also suggested that tyre strategy played a role in how the race evolved, adding: “I think we were able to compete with Mercedes in the second part of the Sprint because they were running used tyres. They used a set that had already been run in Sprint Qualifying, while we had new tyres. So they had the advantage early on, but we had a small grip reserve thanks to choosing fresh tyres. That said, they still appear to be in a better place than us overall.”
Mercedes, therefore, managed to turn changing weather conditions into a strategic advantage, demonstrating not only strong pace but also smart race management.
The only lingering question is what might have happened had George Russell and Kimi Antonelli not compromised each other while battling internally. Without that fight between the two Mercedes drivers, the black-and-silver cars may well have built an even more commanding lead at the front.
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