In the high-octane world of NASCAR, adherence to technical regulations is paramount to ensure fair competition. One notable incident that underscored this was the penalty imposed on the No. 33 team in 2015, which remains a topic of discussion among racing enthusiasts.

The Infraction
During the 2015 Auto Club 400 weekend at Auto Club Speedway, NASCAR officials identified irregularities with the No. 33 Circle Sport Chevrolet during pre-qualifying inspections. The specific violations pertained to the rear suspension, notably the truck trailing arm and its installation. According to NASCAR’s findings, the team used a ¾ inch diameter magnetic steel truck trailing arm mounting bolt that was not installed horizontally, and the truck trailing arm monoball sleeve did not meet the required specifications. Additionally, the truck trailing arm mounting bracket adapter was machined from aluminum solid, contrary to the mandated magnetic steel construction.
Penalties Imposed
Classified as a P4 level infraction—a serious violation within NASCAR’s penalty structure—the consequences were significant:
- Crew Chief Sanctioned: Slugger Labbe, the crew chief for the No. 33 team, faced a $50,000 fine and a suspension spanning three NASCAR Sprint Cup Series Championship races, including any non-championship events during that period. Additionally, Labbe was placed on probation until December 31 of that year.
- Owner Points Deduction: Car owner Joe Falk was penalized with a deduction of 25 championship car owner points.
Appeal and Outcome
The team exercised their right to appeal the penalties. On April 14, 2015, the National Motorsports Appeals Panel adjusted the penalties:
- Fine Reduction: Labbe’s fine was decreased from $50,000 to $20,000.
- Points Reduction: The original 25-point deduction was lessened to a 10-point penalty.
However, the suspension of Slugger Labbe remained in effect. Team owner Joe Falk acknowledged the fairness of the process, stating, “We agree the part should have been presented [beforehand] to the R&D Center. We’re satisfied with the outcome and we won’t appeal further.”
Implications for NASCAR
This incident highlighted the critical importance of strict adherence to technical specifications in NASCAR. Teams are continually innovating to gain competitive advantages, but this case served as a reminder that any deviation from established regulations can lead to substantial penalties. The No. 33 team’s experience underscores the necessity for transparency and compliance to maintain the integrity of the sport.
For a broader perspective on NASCAR’s enforcement of rules and the impact of penalties on teams, the following video provides valuable insights: