2025 GT4 America Series

The 2025 Pirelli GT4 America Series was the sixth season of the GT4 America Series. The season began on April 7 at Sonoma Raceway and finished on October 18 at Indianapolis Motor Speedway.

Calendar

The preliminary calendar was released on June 28, 2024, featuring 13 races across seven rounds.[1]

  Race is an Endurance Round
Round Circuit Date Map
1 Sonoma Raceway, Sonoma, California March 28–30
2 Circuit of the Americas, Austin, Texas April 25–27
3 Sebring International Raceway, Sebring, Florida May 16–18
4 Virginia International Raceway, Alton, Virginia July 18–20
5 Road America, Elkhart Lake, Wisconsin August 15–17
6 Barber Motorsports Park, Birmingham, Alabama September 5–7
7 Indianapolis Motor Speedway, Indianapolis, Indiana October 16–18

Entry list

Team Car Engine No. Drivers Class Rounds
Skip Barber Racing[2] Aston Martin Vantage AMR GT4 1–6
BMW M4 GT4 (G82) 7 		Aston Martin M177 4.0 L Turbo V8 1–6
BMW S58B30T0 3.0 L Twin Turbo I6 7 		07 Alex Garcia[2] Am All
Michael Garcia[2]
ProSport Competition[3] Aston Martin Vantage AMR GT4 Aston Martin M177 4.0 L Turbo V8 007 Tim Savage[4] Am 2–3
Dwayne Moses[4] 2
Christopher Lee[5] 3
89x Motorsports[6] Aston Martin Vantage AMR GT4 Aston Martin M177 4.0 L Turbo V8 09 John Dean[6] PA 4
Michael Fitzpatrick[6]
JMF Motorsports[7] Aston Martin Vantage AMR GT4 Evo Aston Martin M177 4.0 L Turbo V8 3 Jonathan Neudorf[7] S All
Jesse Webb[7]
4 Braydon Arthur[7] S All
Mike David Ortmann[7]
ACI Motorsports[8] Porsche 718 Cayman GT4 RS Clubsport Porsche MDG 4.0 L Flat-6 7 Riley Dickinson[8] PA All
Curt Swearingin[8]
9 Dan Sibille[9] PA 1–3, 5–7
Loek Hartog[9] 1, 5–7
Kay van Berlo[4] 2–3
25 Damir Hot[10] PA 4
Ryan Yardley[10]
OGH Motorsports[2] McLaren Artura GT4 McLaren M630 3.0 L Turbo V6 10 Sean Gibbons[2] Am 1–5, 7
Sam Owen[2]
Riley Technologies Porsche 718 Cayman GT4 RS Clubsport Porsche MDG 4.0 L Flat-6 12 Eric Filgueiras S 7
Spencer Pumpelly
Archangel Motorsports[11] Aston Martin Vantage AMR GT4 Evo Aston Martin M177 4.0 L Turbo V8 15 Adrian Comstock[11] PA 1–3
Thomas Merrill[11]
Rigid Speed Company[12] BMW M4 GT4 (G82) BMW S58B30T0 3.0 L Twin Turbo I6 17 Joseph Catania[12] Am 1–5, 7
Lucas Catania[12]
FastMD Racing with Remstar Racing[13][5] Audi R8 LMS GT4 Audi DAR 5.2 L V10 20 Farhan Siddiqi[4] PA[a] 3
Jagger Jones[4]
Lone Star Racing[4] Mercedes-AMG GT4 Mercedes-AMG M178 4.0 L V8 22 Marc Austin[4] Am 2
Jason Golan[4]
NOLASport[2] Porsche 718 Cayman GT4 RS Clubsport Porsche MDG 4.0 L Flat-6 23 Michael Auriemma[2] PA 1–6
Matheus Leist[2]
Heart of Racing Team[2] Aston Martin Vantage AMR GT4 Evo Aston Martin M177 4.0 L Turbo V8 26 Hannah Grisham[2] S All
Hannah Greenemeier[2]
Fast Track Racing[14] BMW M4 GT4 Evo (G82) BMW S58B30T0 3.0 L Twin Turbo I6 28 Nate Cicero[14] PA 1–5
Stuart McAleer[14]
188 Judson Holt[2] Am All
Denny Stripling[5] 3–7
Dave Ogburn[2] 1–2
Blackdog Speed Shop[15] McLaren Artura GT4 McLaren M630 3.0 L Turbo V6 33 Michael Cooper[15] PA All
Tony Gaples[15]
Bimmerworld Racing[16] BMW M4 GT4 Evo (G82) BMW S58B30T0 3.0 L Twin Turbo I6 36 James Clay[16] Am All
Charlie Postins[16]
82 Tyler McQuarrie[16] PA All
James Walker Jr.[16]
Dome Motorsport[17] Mercedes-AMG GT4 Mercedes-AMG M178 4.0 L V8 37 Marc Miller[18] PA 1–3, 5–7
S 4 		All
Eddie Killeen[19] 1–3, 5–7
Nate Cicero[6][20] 4
van der Steur Racing[21][10] Aston Martin Vantage AMR GT4 Evo 3
Aston Martin Vantage AMR GT4 4–7 		Aston Martin M177 4.0 L Turbo V8 39 Max Hewitt[21] S 3–7
Luca Mars[21]
P1 Groupe[22] McLaren Artura GT4 McLaren M630 3.0 L Turbo V6 43 Matt Bell[22] PA 1–6
Alex Vogel[22]
Driven Artists Racing Team by TPC[23] McLaren Artura GT4 McLaren M630 3.0 L Turbo V6 44 Zoe Barry[23] PA 1
Aurora Straus[23]
Auto Technic Racing[2] BMW M4 GT4 Evo (G82) BMW S58B30T0 3.0 L Twin Turbo I6 52 Zac Anderson[2] S 1–5
Colin Garett[2]
Gafurov Muzaffar Am 7
Ross Poole
53 Matt Million[2] PA All
Tyler Stone[2]
RAFA Racing Team[24] Toyota GR Supra GT4 Evo2 BMW B58B30 3.0 L Twin-Turbo I6 68 Tyler Gonzalez[2] S All
Gresham Wagner[2]
Toyota GR Supra GT4 Evo 1–4
Toyota GR Supra GT4 Evo2 5–7 		72 Anthony Geraci[2] Am All
Kenny Schmied[2]
JTR Motorsports[12] Toyota GR Supra GT4 Evo2 BMW B58B30 3.0 L Twin-Turbo I6 69 Anthony McIntosh[12] PA 1–4
Parker Thompson[12]
Marco Polo Motorsports[25][26] Toyota GR Supra GT4 Evo2 BMW B58B30 3.0 L Twin-Turbo I6 71 Nicolai Elghanayan[25] S 1–2, 4–6
Mads Emil Siljehaug[25]
VPX Motorsport[27] Porsche 718 Cayman GT4 RS Clubsport Porsche MDG 4.0 L Flat-6 77 Danny Dyszelski[28] S All
Alex Ellis[28]
Random Vandals Racing[29] BMW M4 GT4 Evo (G82) BMW S58B30T0 3.0 L Twin Turbo I6 94 Sam Craven[30] PA All
Josh Green[30]
98 Paul Sparta[30] Am All
Mike Kanisczak[30] 1–6
Darius Trinka 7
CrowdStrike Racing by Random Vandals[30] 97 Kevin Boehm[30] S All
Kenton Koch[30]
Flying Lizard Motorsports[10] BMW M4 GT4 (G82) BMW S58B30T0 3.0 L Twin Turbo I6 413 Zach Lumsden[10] Am 4, 7
Kris Wilson[31]
Craig Lumsden[10] 4[b]
Thunder Bunny Racing[2] Toyota GR Supra GT4 Evo2 BMW B58B30 3.0 L Twin-Turbo I6 606 Laura Hayes[2] Am 1–4
Allen Patten[2]
BMW M4 GT4 Evo (G82) BMW S58B30T0 3.0 L Twin Turbo I6 Laura Hayes[32] 5–6
Allen Patten[32]
Source:[33][34][35][36][37][38][39]
Icon Class
S Silver Cup
PA Pro-Am Cup
Am Am Cup

Race results

Bold indicates overall winner

Round Circuit Pole position Silver Winners Pro/Am Winners Am Winners Results
1 R1 Sonoma #71 Marco Polo Motorsports #52 Auto Technic Racing #33 Blackdog Speed Shop #72 RAFA Racing Team Report
Nicolai Elghanayan
Mads Emil Siljehaug 		Zac Anderson
Colin Garett 		Michael Cooper
Tony Gaples 		Anthony Geraci
Kenny Schmied
R2 #23 NOLASPORT #97 CrowdStrike Racing by Random Vandals #94 Random Vandals Racing #07 Skip Barber Racing Report
Michael Auriemma
Matheus Leist 		Kevin Boehm
Kenton Koch 		Sam Craven
Josh Green 		Alex Garcia
Michael Garcia
2 3H Austin #69 JTR Motorsports #68 RAFA Racing Team #82 Bimmerworld Racing #36 Bimmerworld Racing Report
Anthony McIntosh
Parker Thompson 		Tyler Gonzalez
Gresham Wagner 		Tyler McQuarrie
James Walker Jr. 		James Clay
Charlie Postins
3 R1 Sebring #9 ACI Motorsports #97 CrowdStrike Racing by Random Vandals #94 Random Vandals Racing #36 Bimmerworld Racing Report
Dan Sibille
Kay van Berlo 		Kevin Boehm
Kenton Koch 		Sam Craven
Josh Green 		James Clay
Charlie Postins
R2 #39 van der Steur Racing #97 CrowdStrike Racing by Random Vandals #94 Random Vandals Racing #36 Bimmerworld Racing Report
Max Hewitt
Luca Mars 		Kevin Boehm
Kenton Koch 		Sam Craven
Josh Green 		James Clay
Charlie Postins
4 R1 Virginia #37 Dome Motorsport #97 CrowdStrike Racing by Random Vandals #94 Random Vandals Racing #36 Bimmerworld Racing Report
Nate Cicero
Marc Miller 		Kevin Boehm
Kenton Koch 		Sam Craven
Josh Green 		James Clay
Charlie Postins
R2 #77 VPX Motorsport #97 CrowdStrike Racing by Random Vandals #94 Random Vandals Racing #413 Flying Lizard Motorsports Report
Danny Dyszelski
Alex Ellis 		Kevin Boehm
Kenton Koch 		Sam Craven
Josh Green 		Craig Lumsden
Kris Wilson
5 R1 Road America #7 ACI Motorsports #97 CrowdStrike Racing by Random Vandals #7 ACI Motorsports #98 Random Vandals Racing Report
Riley Dickinson
Curt Swearingin 		Kevin Boehm
Kenton Koch 		Riley Dickinson
Curt Swearingin 		Paul Sparta
Mike Kanisczak
R2 #68 RAFA Racing Team #4 JMF Motorsports #7 ACI Motorsports #17 Rigid Speed Company Report
Tyler Gonzalez
Gresham Wagner 		Braydon Arthur
Mike David Ortmann 		Riley Dickinson
Curt Swearingin 		Joseph Catania
Lucas Catania
6 R1 Barber #43 P1 Groupe #97 CrowdStrike Racing by Random Vandals #7 ACI Motorsports #98 Random Vandals Racing Report
Matt Bell
Alex Vogel 		Kevin Boehm
Kenton Koch 		Riley Dickinson
Curt Swearingin 		Paul Sparta
Mike Kanisczak
R2 #33 Blackdog Speed Shop #68 RAFA Racing Team #43 P1 Groupe #606 Thunder Bunny Racing Report
Michael Cooper
Tony Gaples 		Tyler Gonzalez
Gresham Wagner 		Matt Bell
Alex Vogel 		Laura Hayes
Allen Patten
7 R1 Indianapolis #33 Blackdog Speed Shop #68 RAFA Racing Team #33 Blackdog Speed Shop #188 Fast Track Racing Report
Michael Cooper
Tony Gaples 		Tyler Gonzalez
Gresham Wagner 		Michael Cooper
Tony Gaples 		Laura Hayes
Denny Stripling
8 R2 #47 NOLASPORT #4 JMF Motorsports #33 Blackdog Speed Shop #72 RAFA Racing Team Report
Matheus Leist
Matt Travis 		Braydon Arthur
Mike David Ortmann 		Michael Cooper
Tony Gaples 		Judson Holt
Kenny Schmied

Championship standings

Points are awarded to the top ten finishers per class in each race.

Position  1st   2nd   3rd   4th   5th   6th   7th   8th   9th   10th 
Points 1 hour 25 18 15 12 10 8 6 4 2 1
3 hours 50 36 30 24 20 16 12 8 4 2

Drivers' championship

Pos. Drivers Team SON COT SEB VIR ELK BAR IND Points
Silver Cup
1 Kevin Boehm
Kenton Koch 		CrowdStrike Racing by Random Vandals 7 1 15 1 1 1 1 163
2 Tyler Gonzalez
Gresham Wagner 		RAFA Racing Team 22† 2 1 5 3 3 11 131
3 Zac Anderson
Colin Garett 		Auto Technic Racing 1 7 17 4 4 5 5 101
4 Braydon Arthur
Mike David Ortmann 		JMF Motorsports 8 4 7 10 27 10 6 96
5 Danny Dyszelski
Alex Ellis 		VPX Motorsport 27 5 25† 9 5 4 4 73
6 Hannah Grisham
Hannah Greenemeier 		Heart of Racing Team 14 12 8 15 11 15 24 66
7 Jonathan Neudorf
Jesse Webb 		JMF Motorsports 24 6 12 26 10 12 27 57
8 Nate Cicero
Marc Miller 		Dome Motorsport 2 3 36
9 Max Hewitt
Luca Mars 		van der Steur Racing 3 7 11 25 36
10 Nicolai Elghanayan
Mads Emil Siljehaug 		Marco Polo Motorsports 23 19 19 27 22 31
Pro-Am Cup
1 Sam Craven
Josh Green 		Random Vandals Racing 9 3 18 2 2 6 2 141
2 Tyler McQuarrie
James Walker Jr. 		Bimmerworld Racing 3 13 2 11 9 9 8 132
3 Michael Cooper
Tony Gaples 		Blackdog Speed Shop 2 24† 4 7 6 16 7 117
4 Riley Dickinson
Curt Swearingin 		ACI Motorsports 4 8 6 8 20 8 10 97
5 Anthony McIntosh
Parker Thompson 		JTR Motorsports 18 22 5 6 8 WD WD 62
6 Michael Auriemma
Matheus Leist 		NOLASport 5 18 10 28 15 20 9 57
7 Matt Million
Tyler Stone 		Auto Technic Racing 25 9 9 29 18 13 13 57
8 Adrian Comstock
Thomas Merrill 		Archangel Motorsports 6 25† 3 13 26 54
9 Matt Bell
Alex Vogel 		P1 Groupe 10 15 29 18 14 21 17 38
10 Nate Cicero
Stuart McAleer 		Fast Track Racing 12 17 26 WD WD WD WD 14
11 Eddie Killeen
Marc Miller 		Dome Motorsport 19 23 27† 17 21 12
12 Damir Hot
Ryan Yardley 		ACI Motorsports 18 23 10
13 John Dean
Michael Fitzpatrick 		89x Motorsports 24 14 8
14 Dan Sibille ACI Motorsports 11 27 28 23 22 7
15 Loek Hartog ACI Motorsports 11 27 4
16 Kay van Berlo ACI Motorsports 28 23 22 3
Am Cup
1 James Clay
Charlie Postins 		Bimmerworld Racing 28 26 11 12 12 7 21 141
2 Anthony Geraci
Kenny Schmied 		RAFA Racing Team 13 11 14 20 19 14 15 129
3 Judson Holt Fast Track Racing 15 16 13 16 16 23 19 114
4 Alex Garcia
Michael Garcia 		Skip Barber Racing 21 10 23 19 17 22 18 87
5 Dave Ogburn Fast Track Racing 15 16 13 66
6 Paul Sparta
Mike Kanisczak 		Random Vandals Racing 20 14 22 22 24 19 26 65
7 Joseph Catania
Lucas Catania 		Rigid Speed Company 16 20 21 28 17 16 65
8 Laura Hayes
Allen Patten 		Thunder Bunny Racing 26 DNS 24† 14 13 25 20 60
9 Denny Stripling Fast Track Racing 16 16 23 19 48
10 Sean Gibbons
Sam Owen 		OGH Motorsports 29 21 20 24 25 WD WD 38
11 Zach Lumsden
Kris Wilson 		Flying Lizard Motorsports 26 12 29
12 Tim Savage ProSport Competition 21 25 23 26
13 Marc Austin
Jason Golan 		Lone Star Racing 16 24
14 Dwayne Moses ProSport Competition 21 16
15 Zoe Barry
Aurora Straus 		Driven Artists Racing Team by TPC 17 DNS 12
16 Christopher Lee ProSport Competition 25 23 10
— Craig Lumsden Flying Lizard Motorsports WD WD —
Guest drivers ineligible to score points
— Farhan Siddiqi
Jagger Jones 		FastMD Racing with Remstar Racing 27 29 —
Pos. Drivers Team SON COT SEB VIR ELK BAR IND Points
Key
Colour Result
Gold Race winner
Silver 2nd place
Bronze 3rd place
Green Points finish
Blue Non-points finish
Non-classified finish (NC)
Purple Did not finish (Ret)
Black Disqualified (DSQ)
Excluded (EX)
White Did not start (DNS)
Race cancelled (C)
Withdrew (WD)
Blank Did not participate

Bold – Pole
Italics – Fastest Lap
† – Drivers did not finish the race but were classified, as they completed more than 75% of the race distance.

See also

Notes

  1. ^ The No. 20 car was classed as an invitational entry and was not eligible to score points.
  2. ^ Craig participated in the practice setions for round 4 at VIR, but was replaced prior to qualifying by Kris Wilson for the remainder of the weekend.

References

  1. ^ "SRO America Calendar Unchanged For 2025". www.dailysportscar.com. Retrieved June 28, 2024.
  2. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z "Pirelli GT4 America Set to Kick Off 2025 Season with Full Grid at Sonoma Raceway". GT4 America Series. SRO Motorsports Group America. March 21, 2025. Retrieved March 21, 2025.
  3. ^ Dagys, John (November 26, 2024). "ProSport Commits to Dual Series Effort With Aston Entries". Sportscar365. John Dagys Media. Retrieved November 26, 2024.
  4. ^ a b c d e f g h O'Connell, RJ (April 21, 2025). "SRO America Releases COTA Entry Lists". Dailysportscar. Retrieved July 14, 2025.
  5. ^ a b c Grace, Jonathan (May 16, 2025). "Sebring Friday Notebook". Sportscar365. John Dagys Media. Retrieved July 14, 2025.
  6. ^ a b c d Dagys, John (July 17, 2025). "VIR Thursday Notebook". Sportscar365. John Dagys Media. Retrieved August 8, 2025.
  7. ^ a b c d e Euwema, Davey (December 31, 2024). "JMF Switches to Aston Martin for Two-Car Effort". Sportscar365. John Dagys Media. Retrieved December 31, 2024.
  8. ^ a b c Euwema, Davey (November 20, 2024). "Dickinson to Join Swearingin for ACI Porsche GT4 Title Defense". Sportscar365. John Dagys Media. Retrieved November 20, 2024.
  9. ^ a b Euwema, Davey (February 3, 2025). "Hartog to Make Series Debut in ACI Porsche". Sportscar365. John Dagys Media. Retrieved February 3, 2025.
  10. ^ a b c d e f O'Connell, RJ (July 14, 2025). "SRO America VIR Entry Lists Released". Dailysportscar. Retrieved July 14, 2025.
  11. ^ a b c "A New Era for Archangel Motorsports in Pirelli GT4 America". GT4 America Series. SRO Motorsports Group. March 7, 2025. Retrieved March 7, 2025.
  12. ^ a b c d e f Dagys, John (January 7, 2025). "Thompson to Make Series Return in JTR Toyota". Sportscar365. John Dagys Media. Retrieved January 7, 2025.
  13. ^ Dagys, John (November 18, 2024). "FASTMD Commits to Full Season GT4 Effort". Sportscar365. John Dagys Media. Retrieved November 18, 2024.
  14. ^ a b c Dagys, John (March 19, 2025). "Fast Track Confirms Cicero, Stuart McAleer in BMW M4 GT4". Sportscar365. John Dagys Media. Retrieved March 19, 2025.
  15. ^ a b c "Blackdog Reunites With McLaren for GT4 Campaign". Sportscar365. John Dagys Media. March 7, 2025. Retrieved March 7, 2025.
  16. ^ a b c d e Dagys, John (November 13, 2024). "BimmerWorld Set for Continued Two-Car Effort in 2025". Sportscar365. John Dagys Media. Retrieved November 13, 2024.
  17. ^ Dagys, John (February 4, 2025). "Dome Motorsport Announces Mercedes-AMG GT4 Entry". Sportscar365. John Dagys Media. Retrieved February 4, 2025.
  18. ^ Dagys, John (February 6, 2025). "Miller to Spearhead Dome Mercedes-AMG GT4 Lineup". Sportscar365. John Dagys Media. Retrieved February 6, 2025.
  19. ^ "Dome Motorsport Unveils Mercedes-AMG GT4 Livery". Sportscar365. John Dagys Media. February 19, 2025. Retrieved February 19, 2025.
  20. ^ "Dome Motorsport Announces VIR Driver Lineup Update". GT4 America. SRO Motorsports Group. July 17, 2025. Retrieved August 8, 2025.
  21. ^ a b c Dagys, John (May 6, 2025). "Van der Steur Switches to GT4 America; Adds Mars". Sportscar365. John Dagys Media. Retrieved July 14, 2025.
  22. ^ a b c Dagys, John (February 21, 2025). "P1 Groupe Confirms Switch to McLaren Artura GT4". Sportscar365. John Dagys Media. Retrieved February 21, 2025.
  23. ^ a b c "Barry, Straus to Lead DART Car Initiative in TPC McLaren GT4". Sportscar365. John Dagys Media. March 26, 2025. Retrieved March 26, 2025.
  24. ^ Dagys, John (December 10, 2024). "RAFA Racing Merges with Smooge for Expansive Program". Sportscar365. John Dagys Media. Retrieved December 10, 2024.
  25. ^ a b c Dagys, John (November 6, 2024). "Marco Polo to Make Series Return With Toyota Supra GT4". Sportscar365. John Dagys Media. Retrieved November 6, 2024.
  26. ^ Dagys, John (June 18, 2025). "Marco Polo Switches Service Provider for Rest of Year". Sportscar365. John Dagys Media. Retrieved July 14, 2025.
  27. ^ Dagys, John (October 25, 2024). "VPX Commits to Full Season Program". Sportscar365. John Dagys Media. Retrieved October 25, 2024.
  28. ^ a b Dagys, John (March 5, 2025). "VPX Confirms Dyszelski, Ellis in Porsche GT4 Entry". Sportscar365. John Dagys Media. Retrieved March 5, 2025.
  29. ^ Dagys, John (November 7, 2024). "Random Vandals Set for Dual Series 2025 Campaign". Sportscar365. John Dagys Media. Retrieved November 7, 2024.
  30. ^ a b c d e f g Dagys, John (March 5, 2025). "Random Vandals Expands to Three-Car BMW GT4 Squad". Sportscar365. John Dagys Media. Retrieved March 5, 2025.
  31. ^ Dagys, John (July 19, 2025). "Cicero, Dyszelski Claim First Career Poles at VIR". Sportscar365. John Dagys Media. Retrieved August 8, 2025. The No. 413 Flying Lizard Motorsports BMW, which underwent a last-minute driver change from Craig Lumsden to Kris Wilson, was third in class
  32. ^ a b "Pirelli GT4 America Brings Full-Field Sprint Action to Elkhart Lake". GT4 America. SRO Motorsports Group. August 8, 2025. Retrieved August 8, 2025.
  33. ^ "GT4 Final Entry List – Sonoma" (PDF). GT4 America. SRO Motorsports Group. March 27, 2025. Retrieved July 14, 2025.
  34. ^ "GT4 Final Entry List – COTA" (PDF). GT4 America. SRO Motorsports Group. April 25, 2025. Retrieved July 14, 2025.
  35. ^ "GT4 Final Entry List – Sebring" (PDF). GT4 America. SRO Motorsports Group. May 15, 2025. Retrieved June 5, 2025.
  36. ^ "GT4 Provisional Entry List – VIR" (PDF). GT4 America. SRO Motorsports Group. July 11, 2025. Retrieved July 14, 2025.
  37. ^ "GT4 Provisional Entry List – Road America" (PDF). GT4 America. SRO Motorsports Group. August 8, 2025. Retrieved August 8, 2025.
  38. ^ "Provisional Entry List – Barber" (PDF). GT4 America. SRO Motorsports Group. August 29, 2025. Retrieved September 11, 2025.
  39. ^ "Entry List - Indianapolis Motor Speedway". Pirelli GT4 America. Retrieved October 25, 2025.
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