| Date Created | October 1, 2022 |
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| Name of Proponent | Aaron Schmidt |
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| Short Description | Civic Racing Series - Restrict tires allowed, refine allowable brake mods |
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| Applicable Regulatory Document | Race |
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| Type of Rule Change | Modification |
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| Affected Section | Road Race Regulation Section 28.2 Subsections 7, 8 and 9 |
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| 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
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| 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
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| 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.
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| Status/Disposition | Approved |
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