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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.

1776 topics in this forum

  1. Technical Bulletin: Continental Extreme Contact Force & Hankook Ventus RS4 - Now +1.6 - 1-19-23

    By Greg G.,
    • 0 replies
    • 85 views

  2. 2023 Super Touring Rules (TT classing rules) are posted

    By Greg G.,
    • 5 replies
    • 396 views

  3. 2023 ST/TT Car Classification Form is Live

    By Roman V.,
    • 0 replies
    • 117 views

  4. Technical Bulletin: Passing Under Yellow Flag Conditions--All TT 5-20-22

    By Greg G.,
    • 0 replies
    • 509 views

  5. AVG HP Calculator Instructions

    By Roman V.,
    • 0 replies
    • 2.9k views

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

    By Roman V.,
    • 0 replies
    • 2.2k views

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

    By Roman V.,
    • 0 replies
    • 2.6k views

  8. NASA TT Event Schedule

    By Greg G.,
    • 0 replies
    • 7.9k views

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

    By Greg G.,
    • 6 replies
    • 21.8k views

  10. Regional TT Director List--updated 1-19-23

    By Greg G.,
    • 0 replies
    • 18.1k views

  11. Classification Form Problems

    By Chip,
    • 6 replies
    • 76 views

  12. New to TT, question about rules on tires

    By Christian944,
    • 1 reply
    • 48 views

  13. (ST4/TT4) Body & Tire, question and clarifications

    By Justin M.,
    • 2 replies
    • 67 views

  14. Hot Pits

    By Anderson Motorsports,
    • 6 replies
    • 290 views

  15. TTU Physical Dimensions

    By Anderson Motorsports,
    • 2 replies
    • 130 views

  16. Technical Bulletin: Goodyear DOT Radial RCMD - Deletion of "Autocross" classing for ST4-6-- 10-16-22

    By Greg G.,
    • 0 replies
    • 315 views

  17. Technical Bulletin: Front Splitter Limitations--ST4/5 & TT4/5 9-21-22

    By Greg G.,
    • 0 replies
    • 412 views

  18. Dyno'd more than Certification form, less than Classification form

    By Carlos Mejia,
    • 1 reply
    • 210 views

  19. S625h

    By s625h,
    • 1 reply
    • 128 views

  20. Technical Bulletin: ECU Program and Logging Downloads--All ST & TT rev 8-26-22

    By Greg G.,
    • 0 replies
    • 389 views

  21. New Tire Mod-Factor Assessment

    By CTSVR,
    • 2 replies
    • 360 views

  22. Ballast Limits

    By Shooting Brake,
    • 2 replies
    • 220 views

  23. Technical Bulletin: Subframe Modification for Engine Swaps--All ST & TT 5-20-22

    By Greg G.,
    • 0 replies
    • 991 views

  24. Technical Bulletin: Rear Bumper Modification--ST1-3 & TT1-3 5-20-22

    By Greg G.,
    • 0 replies
    • 469 views

  25. TT/ST Hit for Transmissions - Revision Needed

    By Brian Clarke,
    • 11 replies
    • 967 views
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