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Inters to the Grid, Slicks for the Start: F1 Tyre Call 2026
123Helmets Editorial Team
A split tyre strategy is shaping up on a drying grid this weekend, with drivers running intermediates for the laps to their grid slots while teams weigh a late switch to slicks before the formation lap, according to veteran F1 journalist Adam Cooper.
Key Takeaways
Adam Cooper reports drivers are using intermediate tyres for the laps to the grid, with a possible late switch to slicks before the formation lap
The call reflects a drying track surface where grip levels can change materially inside the final 20-30 minutes before lights out
Since 2026, tyre blankets are banned, adding a new layer of difficulty to reading tyre temperatures during exactly this kind of changeable window
Teams must commit to a tyre choice before the parc fermé deadline, making the grid-to-grid period one of the highest-pressure calls of a race weekend
What Adam Cooper Reported
Adam Cooper’s update says drivers are running on intermediate tyres for the laps from the pit lane to the grid, but that a switch to slick tyres for the actual start of the race is still very much possible. This is a tyre strategy detail, not a confirmed final call — it reflects the uncertainty teams face when a circuit is still drying but no longer wet enough to guarantee intermediates hold an advantage once the field gets moving at racing speed.
The distinction matters. Running to the grid on intermediates is about safety margin and tyre preparation on a surface that may still carry damp patches, particularly off the racing line. Starting the race itself on slicks is a different judgement entirely, based on how much the track has evolved in the final laps before the formation lap and how confident engineers are that grip will hold once 20 cars are pushing lap after lap.
Cooper’s post links to further detail via a video/image reference, underlining that this is a live, developing situation rather than a settled decision — exactly the kind of call that can flip in the final minutes before the pit lane opens for the formation lap.
Why Grid-to-Slick Switches Happen
Teams switch from intermediates to slicks between the grid formation and the start when track temperature and dryness cross a threshold where slicks generate more mechanical grip than a full-groove wet-weather tyre can offer on a surface that is no longer genuinely wet. This is a judgement made under real time pressure, typically inside the final half hour before lights out.
The mechanics of the choice come down to a simple trade: intermediates work well on a damp or drying line but overheat and degrade quickly once the track is fully dry, while slicks offer far superior grip in dry conditions but can be dangerous if any wet patches remain, especially off-line or at track edges where cars are more likely to run in changeable weather.
Under current sporting regulations, once cars are released for the formation lap the tyre choice for the start is locked in — teams cannot change compound again before lights out except through the standard formation lap procedure for reporting genuinely wet conditions. That is why the decision window described by Cooper, in the laps between pit lane and grid, is treated as one of the most consequential of a race day.
The 2026 Tyre Blanket Ban Raises the Stakes
Tyre blankets were banned from the 2026 season onward, meaning teams can no longer pre-heat tyres to a target temperature before fitting them to the car. This change directly affects situations like the one Cooper describes, because engineers now have less certainty about how quickly a fresh set of slicks will reach working temperature once fitted on the grid.
Without blankets, a driver who starts on slicks after running intermediates to the grid faces a genuine cold-tyre window for the opening lap, where grip is lower than in previous seasons until the tyre surface builds heat through use. That risk has to be balanced against the downside of starting on intermediates that could overheat within a handful of laps if the track has dried out more than expected.
The net effect is that split-tyre grid situations like this one carry more strategic weight in 2026 than they did before the blanket ban, because the margin for error on tyre preparation has narrowed for every team on the grid.
What Happens Between Pit Lane and Lights Out
The period between the pit lane opening for the formation lap and the actual race start is governed by strict procedural windows under current F1 sporting regulations, and it is inside this window that tyre-compound calls like the one Cooper reports get finalised. Teams typically have a defined amount of time to complete the formation lap and take up their grid slots before the five-red-lights sequence begins.
During this window, race engineers are reading live data on track temperature, surface moisture and grip evolution from the final laps before the pit lane opens. A call to run intermediates for the out-lap to the grid but switch to slicks for the start reflects a bet that conditions will keep improving in exactly that gap, often only a matter of minutes.
If conditions genuinely remain wet, the alternative is to start on intermediates or full wets and manage the early laps more cautiously — a scenario race control also has separate provisions for, including the option to start behind the Safety Car in the most extreme cases. Cooper’s report suggests conditions are borderline rather than extreme, which is exactly why the call is being left open as late as possible.
A Collector’s View on Changeable-Weather Weekends
Wet-to-dry race weekends like this one tend to produce some of the most talked-about helmet moments in F1, since drivers, teams and photographers alike gravitate toward images of cars on the grid in mixed conditions. For fans following a tyre-strategy story like this one, it is a reminder of how much split-second decision-making happens away from the cameras before a single lap is run under green flag conditions.
123Helmets.com covers these race-week stories as they develop, and readers looking to mark a season or a driver’s campaign with a display piece can browse the current range of full-size 1:1 helmet replicas built for exhibition rather than competition use.
“Drivers on inters for the laps to the grid but it still might be slicks for the start.”
— Adam Cooper, F1 journalist
FAQ
Q: Why are drivers running intermediate tyres to the grid but possibly starting on slicks?
Because the track is drying between the laps to the grid and the actual race start, so teams are running intermediates for the safer out-lap while keeping the option open to fit slicks once they judge the surface dry enough for the race itself.
Q: Can teams change tyre compound after the formation lap begins?
No, once the field is released for the formation lap the tyre choice used for the start is effectively locked in under current sporting regulations, aside from the standard procedures race control has for genuinely wet conditions.
Q: How does the 2026 tyre blanket ban affect this kind of decision?
It removes pre-heating, so a car fitted with slicks on the grid after running intermediates faces a longer cold-tyre window on the opening lap than it would have before the ban took effect for the 2026 season.
Q: What is the difference between intermediate and slick tyres?
Intermediate tyres have grooved tread designed for damp or drying track surfaces, while slick tyres have no tread grooves and are built purely for maximum grip on a fully dry surface.
Q: Does 123Helmets.com sell tyres or racing equipment?
No, 123Helmets.com sells full-size 1:1 helmet replicas built as display and collector pieces, and does not sell tyres, safety equipment or any competition gear.
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