CACC Rule Change Proposals Summary – The Confederation of Autosport Car Clubs

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Date Created	October 1, 2022
Name of Proponent	Aaron Schmidt
Short Description	Civic Racing Series - Restrict tires allowed, refine allowable brake mods
Applicable Regulatory Document	Race
Type of Rule Change	Modification
Section to be Added or Changed	Road Race Regulation Section 28.2 Subsections 7, 8 and 9
Current Regulation	7. Tires Any DOT tire in a 205/50/15 size. Hoosier dry tires are banned. 8. Brakes • Brake bias controller is NOT PERMITTED • Rotor must be 1 piece • FRONT rotor diameter cannot exceed 282mm/11in. • FRONT rotor thickness cannot exceed 23mm/0.9 in. • REAR rotor diameter cannot exceed 262mm/10in. • REAR rotor thickness cannot exceed 9mm/0.35in. • REAR rotor CANNOT be vented • Emergency brake delete OPEN • Front caliper: Honda OEM or equivalent • Rear caliper: Honda OEM or equivalent • [Essentially all above is Type-R spec] • Brake lines OPEN • Brake fluid OPEN • Brake ducts/cooling OPEN • Brake booster OPEN • Brake pads OPEN • Master cylinder OPEN • Master cylinder brace OPEN 4 Piston Calipers and/or 2 piece rotors will incur a 75 lb. penalty 9. Suspension Mix and match subframes between generations OPEN Mix and match knuckles between generations OPEN Innovative or similar traction bars for EF/DA OPEN
Proposed Regulation	7. Tires Only 205/50R15 Toyo Proxes RR and 205/50R15 Hoosier H20 Wet are permitted 8. Brakes • Brake bias controller - pressure limitting type PERMITTED • Exchange of Calipers and Rotors is PERMITTED 4 Piston Calipers and/or 2 piece rotors will incur a 75 lb. penalty • FRONT rotor diameter cannot exceed 282mm/11in. • FRONT rotor thickness cannot exceed 23mm/0.9 in. • REAR rotor diameter cannot exceed 262mm/10in. • REAR rotor thickness cannot exceed 9mm/0.35in. • REAR rotor CANNOT be vented • Emergency brake delete OPEN • Front caliper: Honda OEM or equivalent • Rear caliper: Honda OEM or equivalent • [Essentially all above is Type-R spec] • Brake lines OPEN • Brake fluid OPEN • Brake ducts/cooling OPEN • Brake booster OPEN • Brake pads OPEN • Master cylinder - change in bore size PERMITTED • Master cylinder brace OPEN 9. Suspension Mix and match subframes between generations OPEN Mix and match knuckles between generations OPEN Innovative or similar traction bars for EF/DA OPEN Mix and match rear trailing arms with respective brake type between generations OPEN
Reason for Rule Change	The change in the tire rule is to reduce class cost and make competition closer. The change in brake/suspension regulation wording is for more clarity on currently allowable modifications and to allow older for lower trim models to change to the same brakes as newer higher trim models. The allowance of a proportioning valve is to reduce chance of rear lockup and flat spotting of tires.
Status/Disposition	Approved