Rules & Event Guide

Welcome to GRIP Autocross! Our events are designed to provide a fair, competitive, and enjoyable experience for all participants. This guide contains all the information you need on vehicle requirements, competition classes, and event specifics.

Spectator and Grid Access

• Spectator: $5 Donation per person.
• Grid/Pit Access: $10 Donation per person, includes ride-alongs. Some helmets are provided for ride-alongs, but bringing your own approved helmet is recommended.

General Vehicle Requirements

• Production-Based Vehicles: Competing vehicles must be derived from a production model, including cars and trucks, whether kit cars or those with a fiberglass or carbon fiber body resembling a production model.

• Tire Regulations: All tires must have a treadwear rating of 200 or more. Vehicles with lower-rated tires compete only in the Exhibition Class and are ineligible for awards.

• Front Tire Width Classification:

  • Vehicles with a front tire width of 255mm or narrower enter the Small Tire Class.
  • Vehicles with a front tire width of 265mm or wider enter the Big Tire Class.

Competition Classes

Big Tire Class (B)

• Eligibility: Front tire width ≥ 265mm; minimum weight of 2800 pounds (including driver).
• Identifier: ‘B’ prefix, followed by a competition number (e.g., B999).

Small Tire Class (S)

• Eligibility: Front tire width ≤ 255mm; minimum weight of 1800 pounds (including driver).
• Identifier: ‘S’ prefix, followed by a competition number (e.g., S95).

Truck Class (T)

• Eligibility: Any tire size; truck’s width must exceed its height; minimum weight of 2800 pounds (including driver).
• Identifier: ‘T’ prefix, followed by a competition number (e.g., T130).

Ladies Class (L)

• Eligibility: Supplementary class for female drivers.
• Identifier: ‘L’ prefix in front of the main class prefix (e.g., LS18).

Novice Class (N)

• Eligibility: First-year drivers; graduates after first year or three wins.
• Identifier: ‘N’ prefix in front of the main class prefix (e.g., NB76).

Exhibition Class

• Eligibility: Tires under 200 treadwear; not meeting weight requirements for other classes.
• Restrictions: Ineligible for competition shootouts, prizes, or awards.

Registration and Inspection

• Fees: $50 for members, $60 for non-members.
• Tech Inspection: Ensure vehicles are ready for inspection with the hood and trunk open, doors unlocked.

Prizes and Awards

• Shootout Prizes: $400 for 1st place, $100 for 2nd place.
• Class Wins: $100 per class win (minimum of 4 vehicles per class required).

Safety and Compliance

• Vehicle Inspection Requirements:
  • Working seat belts and throttle return.
  • All lug nuts present and tight.
  • Battery securely tied down.
  • Firm brake pedal.
  • No leaking fluids.
  • Tires with measurable tread.
  • All loose items removed, including driver mat and hubcaps.
  • Clearly defined vehicle numbers on both doors about 8″ tall.
• Apparel: Closed toe shoes required. Snell SA2010 or DOT2010 or newer helmets. Loaner helmets available but limited.
• Noise Regulations: Sound limit of 99db enforced. Participants over this limit may be asked to leave to avoid risk to the event site.

Additional Rules

• Conduct: Unsafe behavior, alcohol, drugs, and pets are prohibited.
• Weather Policy: Events will run rain or shine, with provisions for severe weather.
• Vehicle Inspection: Participants may be required to have their vehicle (with driver) weighed to verify class eligibility.
• Prohibited Vehicles: Motorcycles, quads, side-by-sides (SXS), Slingshots, and go-karts are not permitted to compete.
• Rule Amendments: The event organizers reserve the right to modify these rules at any time to enhance the competition’s fairness and integrity.

Please ensure your vehicle complies with the above regulations before registering for the event. Compliance with these rules ensures a fair and enjoyable competition for everyone involved. If you have any questions regarding these rules or your vehicle’s eligibility, please contact us.