BoP Lab / Rules
Rule changes by class
From SCCA Fastrack News: technical bulletins (the changes made) and committee minutes (every letter considered and what was decided).
- All classes (GCR and general)
- ASraced since 2015
- B-Specraced since 2015
- EPraced since 2015
- F600
- FAraced since 2015
- FCraced since 2015
- FE2raced since 2018
- FFraced since 2015
- FPraced since 2015
- FVraced since 2015
- FXraced 2020 to 2024
- GT1raced since 2015
- GT2raced since 2015
- GTXraced since 2019
- HPraced since 2015
- Praced since 2025
- P2raced since 2015
- SMraced since 2015
- SMXraced since 2020
- SRF3raced since 2015
- STLraced since 2015
- STUraced since 2015
- T1raced since 2015
- T2raced since 2015
- T3raced since 2015
- T4raced since 2015
No longer raced nationally
Classes that have left the national rulebook or run as regional-only classes now; their letters stay on record.
- C-Specregional only
- F5raced 2015 to 2022 · not in the rulebook
- FBraced 2015 to 2019 · not in the rulebook
- FEraced 2015 to 2019 · regional only
- FMraced 2015 to 2019 · not in the rulebook
- GT3raced 2015 to 2024 · regional only since 2025-01
- GT3Uraced 2025 · combined into STU 2026-03
- GTLraced 2015 to 2024 · regional only since 2024-12
- IT7raced 2020 · not in the rulebook
- ITAraced 2020 · regional only
- ITBraced 2020 · regional only
- ITCregional only
- ITRregional only
- ITSraced 2020 · regional only
- P1raced 2015 to 2025 · became P 2025-01
- SRFraced 2015 to 2017 · regional only
Classes in the rulebook
From the 2026-09 GCR. Editions read: 2023-01 to 2026-09 (43).
- FORMULA: FA, FC, FE (regional), FE2, FV, FF, F6, FX, FS (regional), FST (regional)
- GRAND TOURING: GT1, GT2, GT3 (regional), GTL (regional), GTA (regional), GTX
- IMPROVED TOURING: ITR (regional), ITS (regional), ITA (regional), ITB (regional), ITC (regional)
- SUPER TOURING: STU, STL
- PRODUCTION: EP, FP, HP
- SEDAN: AS
- SPEC MIATA: SM, SMX
- SPORTS RACING: ASR (regional), P, P2, SRF (regional), SRF3, PE (regional), SR1 & SR3 (regional), RSR (regional)
- TOURING: T1, T2, T3, T4, ET (regional)
- B-SPEC and C-SPEC: B-Spec, C-Spec (regional)
Class changes between editions
- RSR (Rush) added as a regional class in SPORTS RACING
- GT3U (GT-3U) combined into STU, removed from GRAND TOURING (letter #39862)
- GT3U (GT-3U) added in GRAND TOURING
- P1 (Prototype 1) became P (Prototype)
- GT3 (GT-3) became a regional-only class
- ET (Electric Touring) added as a regional class in TOURING
- SR1 & SR3 (Radical) added as a regional class in SPORTS RACING
- GTL (GT-Lite) became a regional-only class
- PE (Prototype Electric) added as a regional class in SPORTS RACING
- SMX (Spec MX-5) added in SPEC MIATA
- C-Spec (C-Spec) added as a regional class in B-SPEC
- T5 (Touring 5) removed from TOURING
- T5 (Touring 5) became a regional-only class