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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.


1736 topics in this forum

  1. '08 TT rules 1 2 3 4 6

    • 127 replies
    • 15.8k views
  2. Pie in the sky rules change - 2013 edition 1 2 3

    • 74 replies
    • 15.8k views
  3. TT1, TT2, TT3--- 2014 ST Rules are posted 1 2 3

    • 63 replies
    • 15.3k views
  4. Tire rules in TT123 - Any interest in expansion? 1 2 3

    • 52 replies
    • 15.3k views
  5. What's it take to prep a C5 Z06? 1 2

    • 39 replies
    • 14.9k views
  6. RX8 and the sedan allowance 1 2

    • 33 replies
    • 14.9k views
    • 84 replies
    • 14.9k views
  7. 07' rule questions.... clarifications.... 1 2 3 4 7

    • 153 replies
    • 14.9k views
  8. TTC or TTD for my Miata? 1 2

    • 47 replies
    • 14.7k views
    • 64 replies
    • 14.6k views
  9. State of TT - a "near-racer" perspective 1 2

    • 35 replies
    • 14.5k views
    • 3 replies
    • 14.4k views
  10. Time Trial Logo? 1 2 3 4

    • 96 replies
    • 14.4k views
  11. Newbie with a potential TT car ????? 1 2

    • 47 replies
    • 14.3k views
  12. TT Shock $$$ ??? 1 2 3 4 7

    • 151 replies
    • 14.2k views
  13. TTS Update 1 2 3 4 5

    • 108 replies
    • 14.1k views
    • 173 replies
    • 13.9k views
    • 111 replies
    • 13.9k views
  14. 2016 TT Rules are posted

    • 24 replies
    • 13.7k views
  15. TTE/PTE & TTF/PTF 2018 Info

    • 15 replies
    • 13.6k views
    • 11 replies
    • 13.3k views
  16. Hoosier in 2010? 1 2 3 4 6

    • 136 replies
    • 13.2k views
    • 57 replies
    • 13.1k views
  17. 2015 Rules Suggestions Thread 1 2 3

    • 53 replies
    • 13.1k views
    • 64 replies
    • 12.9k views
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