Tyler Reddick won the Autotrader 400 at EchoPark Speedway with his No. 45 Toyota Camry NASCAR Cup Car. We dig into the details of whether the fender that flew off the car gave him an aero advantage.
TTAC Creator Bozidar “Bozi” Tatarević is a Bosnian-American racing mechanic, writer, and technical consultant born in Sarajevo in 1986. After immigrating to the U.S. in 1995, he learned English in elementary school and eventually turned his passion for cars—fostered by his father Slav—into a full-time career. Laid off from a tech job in 2008, Bozi began wrenching professionally, eventually launching a shop and car export business with his family. His technical message board posts led to a writing career with outlets like TTAC, Motorsport.com, Road & Track and Racecar Engineering.
In 2018, he made his pro mechanic debut at Watkins Glen and now works as a tire carrier and mechanic for Vasser Sullivan Racing in IMSA, with 10 wins and a 2023 GTD Pro title. Bozi also consults via his agency Podium Prime, with clients ranging from race teams to media production companies.
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Below is an AI-generated summary of the video transcript, which has been edited by a staffer.
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Summary: Did Tyler Reddick's Missing Right Front Fender Help Him Win?
The video analyzes whether Tyler Reddick's damaged race car, specifically the missing right front fender after a late-race crash at Echo Park Speedway, gave him an aerodynamic advantage that helped him win the Autotrader 400.
Crash and Damage
- Late in the race, Reddick collided with Denny Hamlin, severely damaging the front-right corner of his car.
- The right front fender was completely torn away, while the team repaired the splitter and front bumper before the restart.
- The unusual damage sparked speculation that the missing bodywork might have created an aerodynamic advantage.
Aerodynamic Effects
The analyst concludes the missing fender had both positive and negative aerodynamic consequences:
Potential benefits
- The opening in the wheel well likely acted similarly to fender louvers used on GT3 race cars, allowing high-pressure air to escape.
- This probably increased front downforce, giving the front tires more grip.
- More front grip would make the car looser, a setup that can be difficult to drive but may have suited Reddick's dirt-track driving background.
Potential drawbacks
- The missing fender also created additional aerodynamic drag, which should reduce straight-line speed.
- However, because the splitter, hood, and front bumper remained mostly intact, the drag penalty was likely modest.
Dirty Air Advantage
The analyst believes the biggest aerodynamic benefit may have been increased dirty air:
- Air escaping from the exposed wheel well may have disturbed airflow behind Reddick's car.
- During the race, trailing drivers appeared to struggle staying close to him, suggesting the turbulent air may have made passing more difficult.
Tire Cooling Theory Rejected
Some speculated the missing fender cooled the right-front tire, improving performance.
The analyst disagrees because:
- Tire and brake temperatures are not a major concern at Echo Park Speedway.
- NASCAR teams even block off brake cooling at superspeedways.
- Reddick was weaving before the restart to heat his tires, indicating cooler tires were not the objective.
Fresh Tires Were the Real Advantage
The analyst argues the largest factor in Reddick's victory was tire strategy:
- After the crash, Reddick received fresh left-side tires on one stop and fresh right-side tires on another.
- His staggered pit strategy left him with the freshest overall tire combination in the field.
- Other drivers who had similarly fresh tires also made significant charges toward the front and finished near the top ten.
- Drivers on much older tires faded during the closing laps.
Conclusion
The analyst concludes that the missing right front fender was not a magic aerodynamic trick. Instead, Reddick's victory resulted from a combination of:
- The freshest tires in the field (the biggest factor)
- A slightly looser car created by increased front downforce
- Some additional dirty air that may have made it harder for competitors to draft and pass him
Overall, the damaged fender likely provided only a small aerodynamic influence, while smart pit strategy and fresh tires were the primary reasons Tyler Reddick was able to drive to the front and win.
via Autobuzz Today
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