Competition Series

Forums

1. 944 Spec

   Series for Porsche 944s

   26.3k

   posts

   • 
   • 1987 924S Available in Charlotte, NC Area (944 Spec Car or HPDE)
   • By bickleas, October 22, 2024
2. American Iron Racing

   American Iron : AI, AIX & Spec Iron

   25.3k

   posts

   • 
   • Spec Iron Eligible Wheels and tires
   • By Brett B., October 8, 2024
3. CMC

   Camaro Mustang Challenge

   36k

   posts

   • 
   • CMC and AI race package, trailer and parts.....Champion CMC race car, 1987 Z28 Camaro, and AI 1991 Camaro Z28.
   • By CrustyKodiak, April 1, 2024
4. Enduro

   General Enduro Racing Discussion about the 25 Hour, WERC and Regional Endurance Series

   2.7k

   posts

   • 
   • driver needs a team
   • By striker, September 5, 2024
5. German Touring Series (GTS)

   German Touring Series

   9.2k

   posts

   • 
   • 2025 Rule Proposal: Flagtronics
   • By mrgsquared, February 12
6. HC

   HPD Honda Challenge

   15.8k

   posts

   • 
   • Acura ILX/TLX 8DCT Suitability for Racing?
   • By ShiftLess, November 26, 2024
7. NASA Prototype (NP01)

   The NASA Prototype (NP01) car and information about the class.

   471

   posts

   • 
   • NP01 arrive & drive
   • By rikgray, June 6, 2022
8. ST/SU

   Super Touring and Super Unlimited

   9.7k

   posts

   • 
   • Vitour P1 tire modifier for TT
   • By Greg G., Saturday at 05:10 PM
9. SM

   Spec Miata Challenge

   583

   posts

   • 
   • Spec Miata rentals for Oct NCM
   • By Mwright, September 17, 2024
10. Spec Z

    Spec Z Racing

    1.3k

    posts

    • 
    • 295 tires
    • By Aeneas137, June 9, 2022
11. Spec E30

    Spec E30 Racing

    50

    posts

    • 
    • Frequently Asked Questions about the new Spec E30 Maxxis Tire Program
    • By Brett B., February 2, 2022
12. Spec3

    The forum for Spec3 Racing: BMW E36 325

    1.2k

    posts

    • 
    • The state of Spec3 in 2025. Great Growth!
    • By TaylorGoesFast, February 4
13. Spec E46

    Spec E46 Racing

    26

    posts

    • 
    • Pro-built Spec E46
    • By Grega555, January 20, 2023
14. Teen Mazda Challenge

    The NASA Teen Mazda Challenge is a unique program designed specifically for young drivers coming out of karting and entering sports car racing.

    8

    posts

    • 
    • Impossible to set up a login
    • By Michael MX5, November 26, 2022
15. Time Trial

    NASA TT utilizes a car classification system that is easy to understand, and gives HPDE 4 drivers a taste of competition by allowing them to compete for top lap times, in advanced, open passing run sessions, against similarly prepared cars for awards, prizes, and recognition.

    27.2k

    posts

    • 
    • E36 with Euro S50 B30
    • By Shooting Brake, 10 hours ago
16. Team Racing Endurance Challenge (TREC)

    The NASA TREC series is an Endurance Racing series devoted to fun, low-cost competition. It provides for a low barrier of entry to NASA competition, making it very easy to get started in racing. 

    129

    posts

    • 
    • Great Lakes TREC
    • By CRallo, November 19, 2024