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Formula 1 United States GP

McLaren not alone in making rear wing changes after FIA's slot-gap tricks response

In the wake of McLaren’s ‘mini-DRS’ controversy, the FIA has moved to limit flexible rear wings in Formula 1

Jonathan Noble
Jonathan Noble
Edited:
Lando Norris, McLaren MCL38, Franco Colapinto, Williams FW46, Carlos Sainz, Ferrari SF-24

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, celebrates on arrival in Parc Ferme

2024 United States Grand Prix - Sunday
Oscar Piastri, McLaren F1 Team, Lando Norris, McLaren F1 Team, wave to the crowd on the drivers' parade

2024 United States Grand Prix - Sunday
A Dallas Cowboy Cheerleader on the grid for the drivers parade

2024 United States Grand Prix - Sunday
Gene Haas, Owner and Founder, Haas F1 Team

2024 United States Grand Prix - Sunday
Mattia Binotto, CEO and CTO, Stake F1 Team KICK Sauber and Andrea Stella, Team Principal, McLaren F1 Team

2024 United States Grand Prix - Sunday
Lewis Hamilton, Mercedes-AMG F1 Team, arrives at the track

2024 United States Grand Prix - Sunday
George Russell, Mercedes-AMG F1 Team

2024 United States Grand Prix - Sunday
Franco Colapinto, Williams Racing on the drivers parade

2024 United States Grand Prix - Sunday
Nico Hulkenberg, Haas F1 Team, Kevin Magnussen, Haas F1 Team, ahead of the drivers parade

2024 United States Grand Prix - Sunday
Valtteri Bottas, Stake F1 Team KICK Sauber, Zhou Guanyu, Stake F1 Team KICK Sauber, wave at the crowds

2024 United States Grand Prix - Sunday
Lewis Hamilton, Mercedes-AMG F1 Team, embraces a trackside volunteer ahead of the drivers parade

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari and Carlos Sainz, Scuderia Ferrari on the drivers parade

2024 United States Grand Prix - Sunday
Fernando Alonso, Aston Martin F1 Team, Lance Stroll, Aston Martin F1 Team,

2024 United States Grand Prix - Sunday
Lance Stroll, Aston Martin AMR24, climbs into his car

2024 United States Grand Prix - Sunday
Nara Smith and Lucky Blue Smith for Aston Martin Pirelli hot laps

2024 United States Grand Prix - Sunday
Valtteri Bottas, Stake F1 Team KICK Sauber, Mattia Binotto, CEO and CTO, Stake F1 Team KICK Sauber, talk in the Paddock

2024 United States Grand Prix - Sunday
Lewis Hamilton, Mercedes-AMG F1 Team and George Russell, Mercedes-AMG F1 Team on the drivers parade

2024 United States Grand Prix - Sunday
Nico Hulkenberg, Haas F1 Team and Kevin Magnussen, Haas F1 Team on the drivers parade

2024 United States Grand Prix - Sunday
Joe Rogan in McLaren garage

2024 United States Grand Prix - Sunday
Jenson Button, Sky F1 and Nico Hulkenberg, Haas F1 Team

2024 United States Grand Prix - Sunday
The Dallas Cowboys Cheerleaders visit the Haas F1 Team garage

2024 United States Grand Prix - Sunday
Chef Gordon Ramsay ahead of an Aston Martin Pirelli Hot Laps experience

2024 United States Grand Prix - Sunday
Golfer Ian Poulter poses in front of the car of Lando Norris, McLaren MCL38, on the grid

2024 United States Grand Prix - Sunday
Zhou Guanyu, Stake F1 Team KICK Sauber, on the grid with an engineer

2024 United States Grand Prix - Sunday
Lando Norris, McLaren F1 Team, on the grid with his engineer

2024 United States Grand Prix - Sunday
Valtteri Bottas, Stake F1 Team KICK Sauber, removes his helmet

2024 United States Grand Prix - Sunday
Fernando Alonso, Aston Martin F1 Team, on the grid

2024 United States Grand Prix - Sunday
Lewis Hamilton, Mercedes-AMG F1 Team,

2024 United States Grand Prix - Sunday
Mechanics push Valtteri Bottas, Stake F1 Team KICK Sauber C44, to his grid slot

2024 United States Grand Prix - Sunday
Mechanics push Lando Norris, McLaren MCL38, to his grid slot

2024 United States Grand Prix - Sunday
Mattia Binotto, CEO and CTO, Stake F1 Team KICK Sauber, on the grid

2024 United States Grand Prix - Sunday
Liam Lawson, Visa Cash App RB F1 Team

2024 United States Grand Prix - Sunday
Lance Stroll, Aston Martin F1 Team, on the grid

2024 United States Grand Prix - Sunday
Lando Norris, McLaren MCL38, Max Verstappen, Red Bull Racing RB20, Charles Leclerc, Ferrari SF-24, Carlos Sainz, Ferrari SF-24, Oscar Piastri, McLaren MCL38, Pierre Gasly, Alpine A524, Fernando Alonso, Aston Martin AMR24, the rest of the field a

2024 United States Grand Prix - Sunday
Carlos Sainz, Ferrari SF-24, Charles Leclerc, Ferrari SF-24, Pierre Gasly, Alpine A524, Fernando Alonso, Aston Martin AMR24, Oscar Piastri, McLaren MCL38, the remainder of the field at the start

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24, Max Verstappen, Red Bull Racing RB20, Carlos Sainz, Ferrari SF-24, Lando Norris, McLaren MCL38, Pierre Gasly, Alpine A524, Oscar Piastri, McLaren MCL38, the rest of the field on the opening lap

2024 United States Grand Prix - Sunday
Lance Stroll, Aston Martin AMR24, runs wide as Esteban Ocon, Alpine A524, spins and Franco Colapinto, Williams FW46, Liam Lawson, RB F1 Team VCARB 01 pass

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing RB20, Lando Norris, McLaren MCL38, battle into turn 1

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing RB20, as Lando Norris, McLaren MCL38, runs off the circuit

2024 United States Grand Prix - Sunday
Esteban Ocon, Alpine A524, spins as Zhou Guanyu, Stake F1 Team KICK Sauber C44, runs wide

2024 United States Grand Prix - Sunday
Esteban Ocon, Alpine A524, spins as Zhou Guanyu, Stake F1 Team KICK Sauber C44, avoids him

2024 United States Grand Prix - Sunday
Lance Stroll, Aston Martin AMR24, Alex Albon, Williams FW46

2024 United States Grand Prix - Sunday
Lewis Hamilton, Mercedes F1 W15, retires from the race in the gravel after a spin

2024 United States Grand Prix - Sunday
Lewis Hamilton, Mercedes-AMG F1 Team, is given a ride back to the pits after spinning out and retiring from the race

2024 United States Grand Prix - Sunday
The safety car Charles Leclerc, Ferrari SF-24, Max Verstappen, Red Bull Racing RB20, Carlos Sainz, Ferrari SF-24, the rest of the field

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24, Max Verstappen, Red Bull Racing RB20, Carlos Sainz, Ferrari SF-24, Lando Norris, McLaren MCL38, Oscar Piastri, McLaren MCL38, Pierre Gasly, Alpine A524, the rest of the field on the opening lap

2024 United States Grand Prix - Sunday
Nico Hulkenberg, Haas VF-24, battles with Esteban Ocon, Alpine A524

2024 United States Grand Prix - Sunday
Oscar Piastri, McLaren MCL38, Pierre Gasly, Alpine A524, Liam Lawson, RB F1 Team VCARB 01

2024 United States Grand Prix - Sunday
Alex Albon, Williams FW46, makes a pit stop

2024 United States Grand Prix - Sunday
Carlos Sainz, Ferrari SF-24, Lando Norris, McLaren MCL38

2024 United States Grand Prix - Sunday
Sergio Perez, Red Bull Racing RB20 after making a pit stop

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24, Max Verstappen, Red Bull Racing RB20

2024 United States Grand Prix - Sunday
Lando Norris, McLaren MCL38, leaves his pit box after a stop

2024 United States Grand Prix - Sunday
George Russell, Mercedes F1 W15, makes a pit stop

2024 United States Grand Prix - Sunday
Carlos Sainz, Ferrari SF-24, leaves the pits after a stop

2024 United States Grand Prix - Sunday
Sergio Perez, Red Bull Racing RB20, George Russell, Mercedes F1 W15

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24, Max Verstappen, Red Bull Racing RB20, Carlos Sainz, Ferrari SF-24

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24, Max Verstappen, Red Bull Racing RB20, Carlos Sainz, Ferrari SF-24, Lando Norris, McLaren MCL38, the rest of the field

2024 United States Grand Prix - Sunday
Oscar Piastri, McLaren MCL38, Pierre Gasly, Alpine A524

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24

2024 United States Grand Prix - Sunday
Lando Norris, McLaren MCL38, battles with Max Verstappen, Red Bull Racing RB20

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing RB20, Lando Norris, McLaren MCL38, battle into turn 1

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing RB20, battles with Lando Norris, McLaren MCL38

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing RB20, Lando Norris, McLaren MCL38, battle into turn 1

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24

2024 United States Grand Prix - Sunday
Lando Norris, McLaren MCL38

2024 United States Grand Prix - Sunday
Lando Norris, McLaren MCL38, battles with Max Verstappen, Red Bull Racing RB20

2024 United States Grand Prix - Sunday
Lando Norris, McLaren MCL38, battles with Max Verstappen, Red Bull Racing RB20

2024 United States Grand Prix - Sunday
Charles Leclerc, Ferrari SF-24

2024 United States Grand Prix - Sunday
George Russell, Mercedes F1 W15

2024 United States Grand Prix - Sunday
Lando Norris, McLaren MCL38, Max Verstappen, Red Bull Racing RB20

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, celebrates in Parc Ferme

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, celebrates with his teammates in Parc Ferme

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, celebrates with his team in Parc Ferme

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, celebrates with his teammates in Parc Ferme

2024 United States Grand Prix - Sunday
Carlos Sainz, Scuderia Ferrari, 2nd position, celebrates with his teammates in Parc Ferme

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, Carlos Sainz, Scuderia Ferrari, 2nd position, congratulate each other in Parc Ferme

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, lifts the trophy in celebration

2024 United States Grand Prix - Sunday
Carlos Sainz, Scuderia Ferrari, 2nd position, Charles Leclerc, Scuderia Ferrari, 1st position, Max Verstappen, Red Bull Racing, 3rd position, on the podium

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing, 3rd position, lifts his trophy

2024 United States Grand Prix - Sunday
Carlos Sainz, Scuderia Ferrari, 2nd position, lifts his trophy

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, Carlos Sainz, Scuderia Ferrari, 2nd position, celebrate on the podium with Champagne

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing, 3rd position, sprays Champagne on the podium

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, on the podium

2024 United States Grand Prix - Sunday
Max Verstappen, Red Bull Racing, 3rd position, Carlos Sainz, Scuderia Ferrari, 2nd position, cheer with their champagne bottles on the podium

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, Carlos Sainz, Scuderia Ferrari, 2nd position, Max Verstappen, Red Bull Racing, 3rd position, on the podium

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, celebrates on the podium with Champagne

2024 United States Grand Prix - Sunday
The Champagne and trophy for Max Verstappen, Red Bull Racing, 3rd position, on the podium

2024 United States Grand Prix - Sunday
Charles Leclerc, Scuderia Ferrari, 1st position, Carlos Sainz, Scuderia Ferrari, 2nd position, Max Verstappen, Red Bull Racing, 3rd position, in the the post race press conference

2024 United States Grand Prix - Sunday
91

The FIA has revealed that several teams were forced to make changes to their rear wings for the United States Grand Prix as a response to efforts to eradicate slot gap trickery.

There has been a renewed focus on the behaviour of rear wings over recent weeks in the wake of the 'mini-DRS' controversy that erupted at the Azerbaijan Grand Prix.

After McLaren's Oscar Piastri won the Baku race with a flexible rear wing that behaved in such a way that it helped open up the slot gap for a straightline speed boost, rival teams complained to the FIA about what the squad was doing.

That prompted discussions between the governing body and McLaren about the design, which had passed all the static load tests that were demanded of it.

In the end, with the FIA expressing its belief that the behaviour of the wing in opening up the slot gap to such an extent was not acceptable, McLaren agreed to make modification to that low-drag specification.

It has since emerged, however, that the FIA has taken further action in defining to all teams what it deems acceptable when it comes to the rear wings – as other outfits were also understood to be messing around with opening up the slot gap.

The FIA's head of single-seater matters Nikolas Tombazis has revealed that as a result of new guidelines that were sent to teams, several of them had to make tweaks for Austin – with McLaren the only one that has so far admitted to it.

Oscar Piastri, McLaren MCL38, Franco Colapinto, Williams FW46

Oscar Piastri, McLaren MCL38, Franco Colapinto, Williams FW46

Photo by: Simon Galloway / Motorsport Images

"We issued after Singapore some communication about rear wings, saying what we would consider acceptable or not acceptable," explained Tombazis. "Two or three teams had to make some small tweaks to adjust to that."

It is not confirmed which other teams had to make changes as a response to the FIA guidance, but sources suggest that all of 2024's race-winning outfits have been under the spotlight for potentially pushing the limit of the rules with regard to rear wing flexing.

Tombazis said that the basic gist of the new guidance was that the FIA would deem any expansion of the slot gap by more than 2mm when DRS was closed to be outside of the regulations.

"We don't want the amount of opening there to exceed 2mm," he said. "There's some natural opening, because of the way the wings are mounted and deform and so on, but some teams were deforming more."

To help the policing of this matter, the FIA has expanded the fitting of reference dots to the rear wings of cars from this weekend to help it better see what is going on.

These dots, when checked through rear-facing onboard cameras, will allow the FIA to judge with some accuracy just how much the wings are deforming.

Tombazis added: "We just want to make sure that there isn't any sort of continuing trend in a certain direction, but it's not because we have any immediate plans to introduce a new test or anything."

Read Also:

While McLaren's 'mini-DRS' wing fully complied with the regulations and was legal at all times, Tombazis did reveal that the FIA's ultimate conclusion was that it was not happy with the design.

Asked whether the team would have been reported for a rules breach if it had continued to use mini-DRS, Tombazis said: "Yes, we would have, because we specifically gave a warning to them.

"We said, 'Look, we consider that as something you need to change.' If they had ignored us, and they generally don't, then we would have reported them."

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