Bulletin #1 – 3/6/18 – 2018 Season Kickoff, Tentative Road Atlanta Schedule
Bulletin #2 – 3/28/18 – 2018 Rulebook/Pirelli Book, Road Atlanta Schedule
Bulletin #3 – 4/27/18 – Gateway/DME Update for GT4, Tentative Barber Schedule
Bulletin #4 – 6/8/18 – Tentative VIR Schedule
Bulletin #5 – 6/15/18 – Enduro Tire Rule Change
Bulletin #6 – 6/28/18 – Tentative Monticello Schedule
Bulletin #7 – 7/2/18 – Monticello Schedule, Supplementary Rules
Bulletin #8 – 8/1/18 – Tentative Road America Schedule
Bulletin #9 – 8/13/18 – Road America Supplementary Rules
Bulletin #10 – 9/2/18 – Sprint 2 Moved at Road America
Bulletin #1 – 3/13/17 – 2017 Rules and Regulations Bulletin
Bulletin #2 – 3/22/17 – Road Atlanta Event Information Bulletin
Bulletin #3 – 3/31/17 – Rear Tire Specs
Bulletin #4 – 4/24/17 – Updated Rules, Barber Schedule, Canada Boarding Crossing
Bulletin #5 – 5/30/17 – WGI Schedule/Supplementary Regs, Updated Rules on Forgeline Wheels and DH Tires
Bulletin #6 – 6/9/17 – VIR Schedule/Supplementary Regs and Tentative Monticello Schedule
Bulletin #7 – 7/6/17 – Monticello Schedule/Supplementary Regs
Bulletin #8 – 7/24/17 – Updated Rules/CTMP Supplementary Regs
Bulletin #9 – 8/10/17 – CTMP Points/Porsche Design Timepieces/NOLA Tentative Schedule
Bulletin #10 – 10/3/17 – Tentative Daytona Schedule, NOLA Points
Bulletin #1 – 02/02/2016 – News from Series Director F. Allen Shirley
Bulletin #2 – 02/19/2016 – Road Atlanta; Data Acquisition and Camera (Motec C125 and Smarty Cam HD); and Misc.
Bulletin #3 – 08/17/2016 – Series Update; Road America Info.
Bulletin #4 – 09/03/2016 – Update to Series Regulations, Suspension
Bulletin #5 – 09/22/2016 – Series Update; Banquet; Diecast; Daytona Info.
Bulletin #6 – 09/23/2016 – Overheating Issue; Daytona Info.
Bulletin #7 – 10/06/2016 – Replacement Headers; Pirelli Tire Directives; Daytona Info.
Bulletin #8 – 10/22/2016 – CAN Gateway Wiring Harness Modifications from MoTeC; New CGT4CS Website