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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.

1745 topics in this forum

  1. Links:TT License Application,Classification Forms,Rules,more

    By Greg G.,
    • 6 replies
    • 21.3k views

  2. Can I Take My Convertible Vehicle on a Race Track in HPDE or Time Trial Groups?

    By Roman V.,
    • 0 replies
    • 1.9k views

  3. 2022 TT Rules Release Today

    By Greg G.,
    • 0 replies
    • 127 views

  4. Regional TT Director List--updated 11-10-21

    By Greg G.,
    • 0 replies
    • 17.5k views

  5. 2021 ST/TT Car Classification Form

    By Roman V.,
    • 0 replies
    • 1.7k views

  6. Technical Bulletin: Goodyear DOT Radial RCMD - Provisional Classing as "Autocross" for ST4-6-- 6-10-21

    By Greg G.,
    • 0 replies
    • 1.4k views

  7. NASA TT Event Schedule

    By Greg G.,
    • 0 replies
    • 7.5k views

  8. AVG HP Calculator Instructions

    By Roman V.,
    • 0 replies
    • 2.5k views

  9. How To - ST/TT Submission - Edit Link Request

    By Roman V.,
    • 0 replies
    • 2.3k views

  10. Pie in the sky rule change requests - 2012 1 2 3 4 31

    By jason,
    • 764 replies
    • 69.4k views

  11. New OEM Hardtop Rule G 2 1 2 3 4 19

    By dans2k,
    • 468 replies
    • 57.3k views

  12. 2013 Rules Consideration--Bump of +13 Point Tire Category 1 2 3 4 17

    By Greg G.,
    • 423 replies
    • 53.1k views

  13. Why isn't the FRS killing TTD? 1 2 3 4 17

    By Varkwso,
    • 403 replies
    • 101.3k views

  14. AWD (no flaming please), and no mention of the Audi 1 2 3 4 10

    By heavychevy,
    • 233 replies
    • 20.2k views

  15. TTB - Car choice - C5 vs. Evo 1 2 3 4 9

    By Bnjmn,
    • 214 replies
    • 30.1k views

  16. 2009 Rules 1 2 3 4 9

    By Tom A,
    • 201 replies
    • 19.9k views

  17. Decision on 255s... single out one tire? Why? 1 2 3 4 9

    By Cobra4B,
    • 200 replies
    • 31k views

  18. Has 2012 Nats AWD dyno been reserved yet? & TT rules nit 1 2 3 4 8

    By Bnjmn,
    • 177 replies
    • 29.8k views

  19. Why TT and not racing? 1 2 3 4 8

    By hagakure,
    • 175 replies
    • 32.9k views

  20. TT -> 2011 rules speculation! (Joke Thread-outrageous ideas) 1 2 3 4 7

    By Markus,
    • 173 replies
    • 14.5k views

  21. TT3 - Is anyone planning on it? 1 2 3 4 7

    By sperkins,
    • 158 replies
    • 26.8k views

  22. C5 Z06 TTA Set Up for 2010 1 2 3 4 7

    By CShay6,
    • 154 replies
    • 19k views

  23. 07' rule questions.... clarifications.... 1 2 3 4 7

    By Shawn M.,
    • 153 replies
    • 15.4k views

  24. TT Shock $$$ ??? 1 2 3 4 7

    By BlkGt3,
    • 151 replies
    • 14.7k views

  25. YOUR THOUGHTS--TT Rules Revisions 2006 1 2 3 4 6

    By Greg G.,
    • 145 replies
    • 16.6k views
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