Article C3.5.6
Floor Bib
Technical Regulations
Article C3.5.6
Floor Bib
Chapter: C3
In Simple Terms
The floor bib is the bodywork around the floor area that must fit within a specific boundary and be fully visible from above or below. Additionally, any aerodynamic surfaces in this area cannot have sharp inward curves when viewed from below, and any inward curves visible from above must have a minimum radius of 50mm to prevent extreme concave shapes.
- Floor bib bodywork must stay within the defined RV-FLOOR-BIB boundary area
- All bodywork must be fully visible from either above or below - no hidden sections allowed
- Aerodynamic surfaces cannot have any concave (inward-curving) radius visible from below
- Any concave radius visible from above must be at least 50mm to limit aggressive aerodynamic shaping
Official FIA Text
Floor Bib Bodywork must lie entirely within RV-FLOOR-BIB and be fully visible from above or below. Aerodynamic Surfaces must contain no concave radius visible from below and no concave radius less than 50mm if visible from above.
floor bibbodyworkaerodynamic surfacesconcave radiusvisible from above
2026 Season Regulations