Modified or Hand-Crafted Vehicles

Examples of Permitted Modifications

• Changing wheel size; the outside diameter of the tires must be comparable to the original diameter.
• Adding a stylized skirt.
• Installing a solidly fixed aerofoil, so long as it is not wider than the vehicle and obstruct the lights.
• Changing the seats, so long as they are fixed onto the rails or original anchors.
• Changing the muffler or any other component of the exhaust system. The exhaust system must be solidly fixed, not leak and be designed for on-road use; it must not be noisier than the original.
• Increasing the engine's power output.
• Changing the bumper shell. That part of the bumper, designed to absorb energy in the event of impact, may not be removed nor modified.
• Placing a strip no more than 15 cm wide that shades the top of the windshield. Below the strip, however, no material that shades or darkens the windshield glass is allowed.