2025 TECHNICAL BULLETINS

IMSA WEATHERTECH CHAMPIONSHIP

Technical Bulletin IWSC #25-01: 08/19/24 2025 Technical Regulations Release: GTD-PRO, GTD 

Technical Bulletin IWSC #25-02: 10/25/24 2025 Technical Regulations Release

Technical Bulletin IWSC #25-03: 10/25/24 Spin Test Submission Update: GTP, GTD-PRO, GTD

Technical Bulletin IWSC #25-04: 10/25/24 Refuleing Data Update: GTP, LMP2, GTD-PRO, GTD

Technical Bulletin IWSC #25-05: 11/01/24 IMSA 2025 Bosch Scrutineering System Manual (BSSM) Updates - GTP, GTD, GTD-PRO

Technical Bulletin IWSC #25-06: 11/01/24 IMSA DBC Updates - GTP, GTD, GTD-PRO

Technical Bulletin IWSC #25-07: 11/01/24 IMSA GTP, GTD, GTD PRO Regulatory Control Diagram Update

Technical Bulletin IWSC #25-08: 11/08/24 IMSA GTP, GTD-PRO, GTD Spin Test Data Sub Deadlines - 2024 Nov Daytona Test 

Technical Bulletin IWSC #25-09: 11/08/24 IMSA Data Stick Collection - 2024 November Daytona Test

Technical Bulletin IWSC #25-10c1: 11/12/24 IMSA BoP: November Daytona Test Event Corrected 

Technical Bulletin IWSC #25-11: 11/14/24 IMSA GTP, GTD PRO, GTD Power Correction Factor: November Test Event 

Technical Bulletin IWSC #25-12: 11/22/24 IMSA Rolex 24 Post Race Technical Inspection - GTP, GTD PRO

Technical Bulletin IWSC #25-13: 11/22/24 2025 Technical Regulations Update: GTD-PRO, GTD, LMP2

Technical Bulletin IWSC #25-14: 12/11/24 IMSA Data Stick Collection: ROAR and Rolex 24

Technical Bulletin IWSC #25-15c1: 1/7/25 IMSA GTP, GTD-PRO, GTD Spin Test Data Sub Deadlines: 2025 ROAR and Rolex 24

Technical Bulletin IWSC #25-16: 1/7/25 IMSA 2025 Bosch Scrutineering System Manual (BSSM) Updated - GTP, GTD, GTD-PRO

Technical Bulletin IWSC #25-17: 1/7/25 IMSA DBC Updates - GTD, GTD-PRO

Technical Bulletin IWSC #25-18: 1/9/25 IMSA BoP: Daytona ROAR Before the 24

Technical Bulletin IWSC #25-19: 1/10/25 2025 Technical Regulations Update: LMP2

Technical Bulletin IWSC #25-20: 1/10/25 IMSA 2025 Bosch Scrutineering System Manual (BSSM) Updates - GTD, GTD-PRO

Technical Bulletin IWSC #25-21: 1/15/25 IMSA 2025 Bosch Scrutineering System Software Update - GTD, GTD-PRO

Technical Bulletin IWSC #25-22: 1/16/25 IMSA GTP, GTD-PRO, GTD Power Correction Factoror: ROAR Event

 

 

IMSA MICHELIN PILOT CHALLENGE

Technical Bulletin IMPC #25-01: 10/24/24 2025 Technical Regulations Release 

Technical Bulletin IMPC #25-02: 11/22/24 IMSA Technical Regulations Update - GS & TCR

Technical Bulletin IMPC #25-03: 01/08/25 GS & TCR Data Submission Procedure: ROAR Event 

Technical Bulletin IMPC #25-04: 1/9/25 IMSA BoP: Daytona ROAR Event 

Technical Bulletin IMPC #25-05: 1/16/25 2025 GS Barometric Pressure Reference: ROAR Event 

IMSA VP RACING SPORTSCAR CHALLENGE

Technical Bulletin VPRC #25-01: 2025 Technical Regulations Release

Technical Bulletin VPRC #25-02: 11/01/24 IMSA Bosch Scrutineering System Manual (BSSM) - GTDX

Technical Bulletin VPRC #25-03: 11/22/24 Technical Regulations Update: P3, GTDX, GSX

Technical Bulletin VPRC #25-04: 1/7/25 IMSA Bosch Scrutineering System Manual (BSSM) - GTDX

Technical Bulletin VPRC #25-05: 1/7/25 IMSA DBC: GTDX

Technical Bulletin VPRC #25-06: IMSA BoP: GTDX: Daytona ROAR Before the 24

Technical Bulletin VPRC #25-07: Barometric Pressure Reference; GTDX, GSX: ROAR Event 

 

PORSCHE CARRERA CUP

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MAZDA MX-5 CUP

Technical Bulletin MX5 #25-01: 1/15/25 2025 Whelen Mazda MX-5 Cup Presented By Michelin Technical Regulations Publication 

MUSTANG CHALLENGE

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2024 Technical Bulletins

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