Ferrari floor update, 2023 Japanese Grand Prix

Ferrari’s floor changes and five more teams’ Japanese Grand Prix updates

Formula 1

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Japan’s round of the world championship may follow just one week after Singapore’s, but more than half the teams have nonetheless brought new bits for their cars.

Inevitably, the packages are not as extensive as those brought by the likes of McLaren and AlphaTauri to last week’s race. They are also more focused on efficient downforce generation, as Suzuka features several long acceleration zones in addition to medium and high-speed corners.

Ferrari ran their new floor on Charles Leclerc’s car only in first practice, in order to compare its performance with the previous version which Carlos Sainz Jnr ran. The team found it delivered the efficiency gains they were seeking, and both drivers ran it for the later session. Williams have also tweaked their floor, reducing the height of one of their fences to adjust the flow.

Following on from their major updates at the last round, McLaren and AlphaTauri have a pair of updates each, though the latter’s revised wing mirror has only been altered subtly compared to the version seen in Singapore. AlphaTauri have also modified their rear wing where the plane meets the endplate in order to improve efficiency.

The upgrade McLaren brought for Lando Norris only is available to both drivers this weekend. They have also revised their beam wing, again in the name of improving the trade-off between downforce and drag, and added a packer to their recently-modified sidepod inlet to further improve both how air flows around it and the cooling effect it produces.

Mercedes have made a minor change to their rear wing endplate which they concede will bring a small drag penalty. Aston Martin’s sole change is to its front brake duct scoops, the size of which has been reduced, as less cooling is required at this track.

Four teams – Red Bull, Alpine, Alfa Romeo and Haas – have brought no updates this weekend. However the world champions are running the floor they introduced in practice for the Singapore Grand Prix but did not run in the race.

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2023 Japanese Grand Prix F1 teams’ updates

The teams described the changes to their cars for this weekend’s race as follows.


Floor body

Reason for change: Performance – flow conditioning

Difference: “Revision of front floor fences, floor edge, mid floor and diffuser sidewall. Sidepod undercut re-designed to suit”

Description: “Not specific to Suzuka circuit and part of the standard development process, the floor topology has been revised focusing on losses management and load distribution, which translates into a car efficiency increase”

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Rear wing

Reason for change: Performance – local load

Difference: “Vane added to outer face of rear wing endplate.”

Description: “This vane generates a small vortex which in turn generates a small amount of local downforce and drag.”


Beam wing

Reason for change: Circuit specific – drag range

Difference: “New offloaded beam wing”

Description: “A new beam wing geometry, featuring a reshaped upper and lower element, reducing aerodynamic load and drag efficiently, suitable for this circuit.”

Sidepod inlet

Reason for change: Performance – flow conditioning

Difference: “Sidepod Inlet Packer”

Description: “The sidepod inlet has been modified with the addition of a packer, which improves local flow conditioning and results in improved cooling performance.”

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Aston Martin

Front corner

Reason for change: Circuit specific – cooling range

Difference: “New front brake duct scoop with reduced inlet size compared to the previous version.”

Description: “The smaller inlet area reduces mass flow in the brake duct and hence cooling of the disc and calliper. This is a setup component for circuits with lower braking requirements.”


Rear wing

Reason for change: Performance – local load

Difference: “Relative to the previous geometry, the rear wing endplate junction with the rear wing elements has been updated.”

Description: “The updated tips increase the efficiency of the assembly of this rear wing drag level, which is anticipated to be the best choice for this circuit based on lap time analysis.”

Other – rear view mirror

Reason for change: Performance – drag reduction

Difference: “Compared to the baseline rear view mirror assembly, three turning vanes have been removed from the outboard mirror stem.”

Description: “Tested and raced at R15, this is a repeat test item at higher downforce than that event. While removal of thee vanes reduces drag, the modification also reduces outwash that acts upon upper front wheel wake losses, so their removal will be retested at this medium downforce circuit to assess the drag reduction versus wheel wake control trade.”

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Floor fences

Reason for change: Performance – flow conditioning

Difference: “The height of the most inboard forward floor fence is reduced.”

Description: “This trim of the most inboard forward floor fence offloads the fence which affects both the local load and the rearward flow field.”

2023 Japanese Grand Prix

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Author information

Keith Collantine
Lifelong motor sport fan Keith set up RaceFans in 2005 - when it was originally called F1 Fanatic. Having previously worked as a motoring...

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2 comments on “Ferrari’s floor changes and five more teams’ Japanese Grand Prix updates”

  1. Nice. I like very much these descriptions.

  2. Ferrari has also brought a new clutch and gearbox.

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