FIA Penalty History: A Look at Technical Infringements, Skid Block Wear Disqualifications, and the Evolution of Enforcement in Formula 1
Formula 1 has long maintained strict technical regulations to ensure a level playing field, with the FIA stewards enforcing penalties that range from time additions and grid drops to full disqualifications. Among the most severe and consistent sanctions are those for breaches of the skid block (plank) wear rules, governed primarily by Article 3.5.9 of the FIA Formula 1 Technical Regulations. This rule mandates that the plank assembly starts at a uniform 10mm thickness (±0.2mm) when new, with a minimum post-race thickness of 9mm permitted due to natural wear. Measurements are taken at designated holes using precision tools like the Mitutoyo Micrometer, accurate to 0.001mm. Exceeding the 1mm wear allowance often by fractions of a millimetres results in automatic disqualification, as it is seen as evidence of running the car too low, gaining an unfair aerodynamic advantage through excessive ground effect.
The skid block was introduced in 1994 following safety concerns after tragic incidents, serving as a wear indicator to prevent cars from bottoming out dangerously or exploiting ride height for performance. Historically, disqualifications for plank wear were rare. Until 2023, only two such cases occurred, both in the plank’s debut year. At the 1994 Belgian Grand Prix, Michael Schumacher’s Benetton was disqualified from victory after the plank measured as low as 7.4mm in places, well below the 9mm threshold. Later that season, Olivier Panis lost his ninth-place finish at the Portuguese Grand Prix in Estoril for a similar infringement. These early enforcements set a precedent of zero tolerance, with appeals typically rejected to uphold regulatory integrity.
For nearly three decades, plank-related disqualifications remained exceptionally uncommon, reflecting improvements in car design, ride height management, and track conditions. That changed dramatically with the 2022 return of ground-effect aerodynamics, which incentivised teams to run cars as low as possible for maximum downforce. This increased plank abrasion risk, especially on bumpy or abrasive circuits, leading to a noticeable uptick in scrutineering scrutiny and penalties.
The modern era of frequent plank wear issues began in earnest at the 2023 United States Grand Prix in Austin. Post-race inspections on four randomly selected cars revealed excessive wear on the skids of Lewis Hamilton (Mercedes, who finished second) and Charles Leclerc (Ferrari, sixth). Both were disqualified, stripping them of valuable points. The breaches were attributed to the cars running too low, with measurements falling below 9mm at multiple points. This double disqualification highlighted the challenges of balancing aggressive setups with compliance, prompting teams to adjust ride heights and monitor wear more closely during races.
In 2025, the issue escalated further amid the intense championship battles. At the Bahrain Grand Prix, Nico Hulkenberg (Stake F1/Kick Sauber) was disqualified from 13th place after his car’s plank measured between 8.4mm and 8.5mm at inspection points 0.5-0.6mm below the limit. While this did not heavily impact the constructors’ standings, it reinforced the FIA’s strict application of the rule.
The Chinese Grand Prix in 2025 delivered another high-profile case involving Lewis Hamilton, now driving for Ferrari. His car was found with rearmost skid measurements of 8.6mm on the left-hand side and centreline, and 8.5mm on the right-hand side. Hamilton was disqualified, costing Ferrari points. In the same event, Charles Leclerc also faced disqualification, though for being 1kg underweight rather than plank wear alone. These incidents marked multiple technical disqualifications in a single season, drawing attention to the razor-thin margins in modern F1 engineering.
The most controversial and costly episode came at the 2025 Las Vegas Grand Prix on November 23. Both McLaren MCL39 cars of Lando Norris (who crossed the line in second) and Oscar Piastri (fourth) failed post-race scrutineering. Norris’s right-hand side measurements showed 8.88mm at the front and 8.93mm at the rear breaches of 0.12mm and 0.07mm respectively. Piastri’s car recorded even larger deviations in places: 8.74mm on the right-front (0.26mm under) and similar shortfalls elsewhere. The stewards acknowledged the infringements as unintentional, citing factors like porpoising and circuit demands raised by McLaren team principal Andrea Stella, but ruled there was “no provision in the regulations or in precedent for any penalty other than disqualification.” The double DSQ erased 30 potential points for McLaren, significantly tightening the Drivers’ and Constructors’ Championships and boosting Max Verstappen’s title hopes.
Throughout these cases, the FIA has consistently emphasised that technical breaches undermine the sport’s integrity, regardless of intent or the microscopic scale of the violation. Stewards’ decisions repeatedly note that while mitigating circumstances may be considered in submissions, the standard penalty remains disqualification to deter any potential exploitation. Teams have occasionally lobbied for more proportional sanctions scaling penalties based on the degree of breach or proven performance gain but the rulebook offers no such flexibility, and historical precedent supports strict enforcement.
Other notable technical penalties in recent F1 history complement the plank wear narrative. George Russell’s 2024 Belgian Grand Prix victory was stripped due to the car being underweight, with Mercedes citing plank wear as a contributing factor in their defence. Underweight cars, insufficient fuel samples (as with Sebastian Vettel in Hungary 2021), and flexible bodywork breaches have also led to disqualifications or severe penalties. In 2025 alone, the Las Vegas incident was described as the fifth and sixth disqualifications of the season, underscoring a busier year for technical stewards.
The FIA has responded to emerging loopholes with technical directives. In late 2024, following complaints and discoveries of “satellite” or expanding skid blocks designed to minimise measurable wear while allowing lower ride heights, the governing body issued clarifications banning certain protective plates and modifications. Teams adjusted floors accordingly, but the 2025 season still saw violations, suggesting the ongoing cat-and-mouse game between innovation and regulation.
This history illustrates the perpetual tension in Formula 1: teams push engineering limits for competitive edge, while the FIA enforces black-and-white rules to maintain fairness. Plank wear disqualifications, though infrequent historically, have become more prominent in the ground-effect era due to aerodynamic demands. Critics argue the zero-tolerance approach can feel harsh for marginal, non-deliberate breaches measured in hundredths of a millimetre. Proponents maintain that any relaxation risks opening doors to systematic abuse.
As F1 prepares for major 2026 regulatory changes including new chassis and power unit concepts discussions on proportionality in technical penalties may intensify. McLaren’s public calls following Las Vegas for the FIA to review scaling sanctions could influence future rulebooks. For now, the message remains clear: even the smallest deviation from the 9mm minimum carries championship-altering consequences.
The skid block’s role as a simple wooden wear indicator continues to wield outsized influence in a sport defined by precision. From Schumacher’s 1994 Benetton to Norris and Piastri’s 2025 McLarens, these cases serve as reminders that in Formula 1, regulatory compliance is as critical as on-track speed. Whether future reforms introduce graduated penalties or enhanced real-time monitoring technology remains to be seen, but the FIA’s commitment to strict enforcement has defined its approach across decades.