A test and tune is a practice-only session a track schedules outside its race program — no heats, no points, no purse — where teams shake down a car, break in parts and try setup changes.
Read how a track actually lists it. Lernerville Speedway’s 2026 schedule ran “Test & Tune Rotating Hot Laps” on Fridays April 10 and April 17, then “Test & Tune plus Experience” on Tuesdays through the season — May 12, June 9, July 14 and August 11 — each entry naming the divisions invited. Two things to take from that. It is posted months ahead, so you can build a shakedown around a fresh motor or a rebuilt car. And “rotating hot laps” is a format, not a free-for-all — you go out with your class, on the track’s rotation. What it costs, whether tech is open, and whether transponders and full safety gear are required are not standard, so call the track before you load.
A test and tune is the only track time all year with no points and no purse riding on it, which makes it the cheapest place to find out a part is wrong.