In 2023, the International Motor Sports Association (IMSA) was celebrating its 54th anniversary. IMSA was founded by NASCAR's Bill France, John Bishop (a former executive director of the Sports Car Club of America) and Bishop's wife, Peggy. They succeeded in creating their vision to build a sanctioning body for professional road racing in North America. From its humble roots, IMSA currently sanctions seven different race series: IMSA WeatherTech SportCar Championship, IMSA Michelin Pilot Challenge, IMSA Prototype Challenge, Porsche Carrera Cup, Mazda MX-5 Cup, Lamborghini Super Trofeo and the Ferrari Challenge.

Introduced in 2022 was a new per-event and season-long Bronze Cup award for participants in the Grand Sport (GS) class. To be eligible, every driver in a GS car's lineup must be Bronze rated.

The Bronze Cup winners will be recognized on the podium at each event, along with recognition and a season-ending award for the highest placing Bronze Cup combination in the championship standings.

The 2023 season features eleven race weekends; each contest is two hours in length. The exceptions are Daytona and Indianapolis, which are four hours. And the standalone events at Detroit (Grand Sport) and Lime Rock Park (TCR) are one hour and forty minutes.

  • January 26–29 - Daytona International Speedway
  • March 15–18 - Sebring International Raceway
  • May 12–14 - WeatherTech Raceway Laguna Seca
  • June 2–3 - Detroit Street Circuit - GS Only
  • June 23–25 - Watkins Glen International
  • July 7–9 - Canadian Tire Motorsport Park
  • July 21–22 - Lime Rock Park - TCR Only
  • August 4–6 - Road America
  • August 25–27 - Virginia International Raceway
  • September 15–17 - Indianapolis Motor Speedway
  • October 11–14 - Michelin Raceway Road Atlanta

Two race groups compete in the Michelin Pilot Challenge:

  • Grand Sport (GS): This category underwent some changes in 2017. The new rules accepted cars prepared to GT4 technical requirements. The quicker of the two groups, this class includes cars such as the Ford Mustang GT4, BMW M4 GT4, Mercedes-AMG, Audi R8 and Porsche 718 Cayman GT4 Clubsport. Vehicles competing in this group produce between 400 - 450 horsepower and are capable of speeds over 175 mph.
  • Touring Car (TCR): TCR is a global touring car category that was added to the Michelin Pilot Challenge series in 2018. This category includes the Volkswagen Golf GTI TCR, Honda Civic TCR, Alfa Romeo Giulietta TCR and Audi RS3 LMS TCR. They use a 2.0-liter turbocharged engine which will produce between 300 – 350-horsepower.

Close, competitive racing with cars that fans could relate to contributed to the series' popularity. It also provided an environment for automotive manufacturers to test and showcase their products.

Round six for the Grand Sport class and race five for the 2023 Michelin Pilot Challenge TCR category was held at Canadian Tire Motorsport Park. Teams would compete in a two-hour contest around the ten-turn 2.459-mile road course.

The series uses a split start, with the faster Grand Sport cars receiving the green flag first. Leading the field into Canadian Tire Mosport Park’s corner one for round six of the 2023 Michelin Pilot Challenge is the No. 50 Hattori Motorsports Toyota GR Supra GT4 EVO of the pole-sitter, Parker Thompson. Immediately behind Thompson is the No. 72 Murillo Racing Mercedes AMG GT4 shared by Kenny Murillo and Christian Szymczak.
Qualifying on the pole for the Canadian Tire Motorsports Park 120 was the No. 50 Hattori Motorsports Toyota GR Supra GT4 EVO. Sharing the car were Billy Johnson and Parker Thompson. Thompson took control of the race during his stint. Johnson was in second place when the team had to make another stop for fuel. They crossed the finish line in second but were awarded the victory after the winning car was excluded.
Winning the pole for the TCR category was Chris Miller. He claimed the pole by a mere 0.002-second over Mat Pombo. Pombo was hoping to add his fifth-consecutive TCR pole position. Miller shared the No. 17 Unitronic / JDC Miller Motorsports Audi RS 3 LMS TCR with Mikey Taylor. Taylor drove the final stint and battled with the Hyundai of Robert Wickens. There was contact allowing Taylor to grab the lead and victory.
Sharing the No. 71 Rebel Rock Racing Chevrolet Camaro GT4.R were Frank De Pew and Robin Liddell. De Pew was given the honour of qualifying the Camaro. Unfortunately, he was involved in an incident and, as a penalty, lost his two quickest times. They started last in the Grand Sport category. The experienced Liddell drove the final stint and finished third on track but was given second when the Turner BMW was disqualified.
The TCR start for round five of the 2023 Michelin Pilot Challenge at Canadian Tire Motorsport Park. Leading the eleven entries into corner one in the No. 17 Unitronic / JDC Miller Motorsports Audi RS 3 LMS TCR of the pole winner, Chris Miller. Behind Miller is the other front-row starter, Mat Pombo, driving the No. 37 LA Honda World Racing Honda Civic Type-R TCR.
The Grand Sport podium for round five of the 2023 Michelin Pilot Challenge at Canadian Tire Motorsport Park. In the center are Cameron Lawerence and Robert Megennis from Turner Motorsport. The pair were later disqualified after the refueling time was less than the minimum time and the car was underweight. On the left are the winners, Billy Johnson and Parker Thompson. Finishing second are Frank De Pew and Robin Liddell.
The third fastest in the TCR qualifying session was Harry Gottsacker. Gottsacker drove the No. 33 Bryan Herta Autosport Hyundai Elantra N TCR and was paired with Robert Wickens. The duo remained in contention. Wickens drove the final stint and was in the lead. There was contact with the Audi of Mikey Taylor with two laps remaining. He lost the position but had to pit for fuel and finished second.
Qualifying second overall and in the Grand Sport category by a margin of 0.558-seconds was Rory van der Steur. Van der Steur shared the No. 19 Van der Steur Racing Aston Martin Vantage GT4 with Austin McCusker. A late race pass on the No. 78 Thaze Competition Mercedes-AMG GT4 gave the pair a fourth-place finish. However, the winning BMW received two penalties after the race moving van der Steur and McCusker to third.
Bryan Herta Autosport with Curb – Agajanian entered three Hyundai Elantra N TCR. The No. 98 Hyundai was driven by Mason Filippi and Mark Wilkins. Wilkins won last season’s Canadian Tire Motorsport Park event with Robert Wickens. Filippi handled the qualifying duties and was fifth fastest in TCR. The duo finished seventeenth overall and third in their category.
The round five podium for the TCR category of the 2023 Michelin Pilot challenge at Canadian Tire Motorsport Park. Chris Miller and Mikey Taylor are in the center, claiming their first victory of the season. On the left from Bryan Herta Autosport with Curb – Agajanian are the runner-ups, Robert Wickens and Harry Gottsacker. Completing the rostrum and finishing third are Mason Filippi and Mark Wilkins.

1GSJohnson / ThompsonToyota GR Supra GT4 EVO85-
2GSDePew / LiddellChevrolet Camaro GT4.R85-
3GSvan der Steur / McCuskerAston Martin Vantage GT485-
4GSDiMeo / MillerMercedes-AMG GT GT485-
5GSDias Perera / AndrewsMercedes-AMG GT GT485-
6GSPlumb / PlumbAston Martin Vantage GT485-
7GSMurillo / SzymczakMercedes-AMG GT GT485-
8GSColeman / MarcelliAston Martin Vantage GT485-
9GSMcAlister / WestphalPorsche 718 GT4 RS CS85-
10GSAdelson / SkeerPorsche 718 GT4 RS CS85-
11GSFilgueiras / McAleerPorsche 718 GT4 RS CS84-
12GSCollingwood / PumpellyPorsche 718 GT4 RS CS84-
13GSMichaelian / MarsFord Mustang GT484-
14TCRMiller / TaylorAudi RS3 LMS TCR84-
15TCRWickens / GottsackerHyundai Elantra N TCR83-
16GSQuinlan / LiefoogheBMW M4 GT483-
17TCRWilkins / FilippiHyundai Elantra N TCR83-
18TCRTally / LaMarraHonda Civic FL5 TCR83-
19TCRBlock / LewisAlfa Romeo Giulietta Veloce TCR83-
20GSGiovanis / TrinklerAston Martin Vantage GT482-
21GS Staikos / AveMercedes-AMG GT GT482-
22TCRRockwell / DupontAudi RS3 LMS SEQ82-
23TCRBrown / RockwellAudi RS3 LMS SEQ82-
24GSLazare / FilsingerMcLaren Artura GT475Did Not Finish
25GSFoley / BarlettaBMW M4 GT475-
26GSMcCumbee / AltzmanFord Mustang GT472-
27GSFerrera / WilsonMercedes-AMG GT GT463Did Not Finish
28TCRLewis / HaglerHyundai Elantra N TCR62-
29TCRGonzalez / WittmerHonda Civic FK7 TCR46Did Not Finish
30TCRPombo / EversleyHonda Civic FK5 TCR42Did Not Finish
31GSMosing / FossMercedes-AMG GT GT434Did Not Finish
32TCROrtiz / MaxsonHyundai Elantra N TCR16Did Not Finish
33GSUretsky / CooperAston Martin Vantage GT411Did Not Finish
34GS Ward / MoradMercedes-AMG GT GT42Did Not Finish
35GSMegennis / LawrenceBMW M4 GT485Excluded

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