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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.


1,795 topics in this forum

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  1. 2022 TT5/6 Scion FRS Build

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  2. Transmission Rule Clarification

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  3. Baby Grand

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  4. 2022 ST/TT Car Classification Calculator

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  5. 2021 ST/TT Car Classification Form

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  6. Rule Clarification ?

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  7. Tire Size (section width) +/- PWR Review

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  8. Tire size question for TT4

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  9. 2022 Rule Changes

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  10. TT4 questions for a 1998 Mustang GT

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  11. Mazda Miata Floor Pan

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  12. How competitive is the ND2 Miata in TT5?

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  13. Kinda lost in the rules

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  14. TT4 Chassis mount rear wing allowed?

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  15. 2021 TT Form Submission

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  16. ST5 Mod Factor Questions

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