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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.

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1735 topics in this forum

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

    By Greg G.,
    • 6 replies
    • 20.9k views

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

    By Roman V.,
    • 0 replies
    • 1.8k views

  3. Regional TT Director List--updated 2-22-21

    By Greg G.,
    • 0 replies
    • 17.2k views

  4. 2021 ST/TT Car Classification Form

    By Roman V.,
    • 0 replies
    • 1.4k views

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

    By Greg G.,
    • 0 replies
    • 437 views

  6. NASA TT Event Schedule

    By Greg G.,
    • 0 replies
    • 7.3k views

  7. AVG HP Calculator Instructions

    By Roman V.,
    • 0 replies
    • 2.4k views

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

    By Roman V.,
    • 0 replies
    • 2.1k views

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

    By jason,
    • 764 replies
    • 65k views

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

    By dans2k,
    • 468 replies
    • 54.4k views

  11. 2013 Rules Consideration--Bump of +13 Point Tire Category 1 2 3 4 17

    By Greg G.,
    • 423 replies
    • 50.1k views

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

    By Varkwso,
    • 403 replies
    • 98.7k views

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

    By heavychevy,
    • 233 replies
    • 18.7k views

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

    By Bnjmn,
    • 214 replies
    • 28.7k views

  15. 2009 Rules 1 2 3 4 9

    By Tom A,
    • 201 replies
    • 18.7k views

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

    By Cobra4B,
    • 200 replies
    • 29.8k views

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

    By Bnjmn,
    • 177 replies
    • 28.6k views

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

    By hagakure,
    • 175 replies
    • 31.6k views

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

    By Markus,
    • 173 replies
    • 13.4k views

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

    By sperkins,
    • 158 replies
    • 25.7k views

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

    By CShay6,
    • 154 replies
    • 17.9k views

  22. 07' rule questions.... clarifications.... 1 2 3 4 7

    By Shawn M.,
    • 153 replies
    • 14.5k views

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

    By BlkGt3,
    • 151 replies
    • 13.8k views

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

    By Greg G.,
    • 145 replies
    • 15.8k views

  25. 2006 TT RULES published 1-5-06 1 2 3 4 6

    By Greg G.,
    • 136 replies
    • 16.4k views
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