Lando Norris and Oscar Piastri are under investigation for excessive skid block wear and could be disqualified from the Las Vegas Grand Prix.
The McLaren driver finished runner-up to Max Verstappen in Sin City, but he has been called before the stewards for allegedly breaching the regulations.
FIA technical delegate Jo Bauer said: "The skid wear of car numbers 81 and 04 was checked.
"The rearmost skid was measured on both cars according to the team’s legality documents submission in accordance with TD039 M, item 1.2 b) i)."
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Bauer added: "The measured thickness was less than 9 mm on both cars, which is the minimum thickness required by TR Article 3.5.9 e).
"I am referring this matter to the stewards for their consideration."
During the race, the championship leader found himself relegated to third position after starting from the front of the grid.
Norris eventually reclaimed second place from Russell on lap 34 along the Las Vegas Boulevard.
Lando Norris and Oscar Piastri are under investigation for excessive skid block wear and could be disqualified from the Las Vegas Grand Prix
|REUTERS
As it stands, the championship standings show Norris maintaining a healthy buffer over his rivals with just two races remaining.
The McLaren driver holds 408 points, placing him 30 points ahead of teammate Piastri on 378 points.
He is also 42 points ahead of Max Verstappen.
However, if the Briton is stripped of his podium finish, the gap will close.
During the race, the championship leader found himself relegated to third position after starting from the front of the grid
|REUTERS
Verstappen would move level with second-place Piastri on 366 points and only 24 points behind Norris.
With 58 points still available across the Qatar Grand Prix, which includes a sprint race worth eight points, and the season finale in Abu Dhabi, the potential blow to McLaren could prove costly in the drivers' championship.
Norris and a McLaren team representative visited the stewards at 11.45pm local time on Saturday, more than two hours after the chequered flag fell.
Earlier this season, Lewis Hamilton was disqualified from the Chinese Grand Prix after the rearmost skid on his Ferrari was less than the 9mm minimum thickness required.
The McLaren driver finished runner-up to Max Verstappen in Sin City
|REUTERS
Norris began from pole position but compromised his race within the opening corners.
The British driver made an overly aggressive defensive move against Verstappen, cutting across the Red Bull driver before braking too late into the first corner hairpin.
"I f***** it up," Norris admitted following the race. "I was too punchy, and it cost me."
McLaren will now nervously await the FIA's verdict.
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