Last reviewed: August 3, 2026 · By the RaceYear team
Short answer: A test and tune is a practice-only session — no heats, no points, no purse — and it’s the only time all season you can change one thing, run it, and know what it did. Show up with a written change list, run one variable per session, log the track condition every time out, and leave with conclusions instead of laps.
Key takeaways
Setup-direction note: Adjustment effects described here are directions to test from a stated baseline, not universal guarantees. Response varies with chassis and suspension geometry, tire construction and pressure range, track surface, corner phase, driver input, and what else changed at the same time. Confirm against your chassis builder, the tire manufacturer, the current rulebook, and your own scales and lap times.
Most racers treat a practice night as bonus laps. You unload, run until you’re bored or something breaks, load up, and the only thing you know for sure is that you burned a set of tires and a tank of fuel.
That’s a shame, because a test and tune is the one piece of track time all season where the clock belongs to you. On a race night, every change is a guess you never get to verify. Here’s how to run a test day that sends you home with answers.
A test and tune — sold as open practice, a practice day, or a test session depending on the track — is track time with the race program stripped out. No heats, no points, no purse, no lineup clock. Nobody black-flags you for pulling in after three laps to check a shock.
That freedom is the whole product. Use it for:
What it’s not good for: chasing a headline lap time, racing whoever else showed up, or trying six things because you finally have the place to yourself.
Admission is all over the map, so call the track rather than assume. Three real published examples:
| Track | Session | Listed price |
|---|---|---|
| Anderson Speedway (IN) | Open practice, all divisions, 4:30–7:30 p.m., May 15, 2026 | $20 pit pass |
| Clarksville Speedway (TN) | Dirt track test and tune, noon till dark, Feb. 18, 2024 | $35 per person, pit only |
| Mid-Ohio Sports Car Course | Open Test and Tune, four 20-minute sessions, full day | $450 per driver |
Those are three very different products. The Mid-Ohio full day requires a current race license — a racing-school certificate from the past 12 months “may also be accepted” — and pre-registration — “NO WALK-UPS” — while a weekly oval may just want a pit pass and a helmet (Mid-Ohio, Anderson Speedway). Confirm your track’s rules, tech requirements and hours before you tow.
Everything that makes a test day productive happens in the shop. Driver coaching outfit Driver61 puts it bluntly: discuss “what’s the goal of your test day before you arrive at the circuit,” because turning up just to do some laps is “an ineffective use of track time and less improvement than you might hope to see” (Driver61).
Settle five things before the trailer doors close:
Driver61 also recommends keeping sessions to a maximum of 20 minutes, since by then “most non-pro drivers are beginning to tire and make mistakes.” Short runs, then come in and talk about it.
A change list is an ordered plan of what you’ll try and why. A wish list is everything you’ve been meaning to mess with. The difference shows up in what you actually know at dark.
Then stop. Adding items at the racetrack because you feel good is how a test turns into a Saturday night.
Because a change you can’t isolate is a change you can’t repeat. SCCA’s Rob Krider tells the story of a driver whose car was oversteering: adjust the front swaybar and nothing else — “Change the front bar, go out and see if the car is better. If that doesn’t work then we can discuss making another change.” The driver changed the bar, the shocks and the tire pressures all at once, and learned nothing about which one did it (SCCA).
Three changes at once can absolutely make the car faster. You just can’t bank it. Next month you’ll bolt all three back on and one of them will be the one that was hurting you the whole time.
The loop is simple and genuinely hard to hold: change one thing, run it, write down what the car did into the corner, through the middle and off, then decide — keep, revert, or rerun because the run was dirty. That last option is the one everybody skips. Traffic, a missed shift, a lapped car in three: those runs don’t count. Throw them out and repeat rather than drawing a conclusion from a bad lap.
Here’s the part that quietly ruins most testing on dirt. You’re not comparing two setups. You’re comparing two setups on two different racetracks, because the surface changed between them.
World of Outlaws’ own primer says it plainly: “a dirt track surface is dynamic, always changing throughout the night, and rarely the same from day to day” (World of Outlaws). Track prep — watering, packing, grading, shaping — is an ongoing job, not something that happened before you got there. WoO track guru Gary Risch describes the routine as “watering the thing at night. Coming in and tilling it in the morning. Letting it dry out a little bit, crusting it, grading it, working the spots in, really manicuring it” (RacingNews.co).
Crews keep working during the show, too. Coverage of dirt prep describes intermission reworks where “the graders come out to peel off the top layer of spent rubber and dry dust,” followed by heavy water passes to restore grip (Speedway Action Magazine). If that happens between your run four and your run five, your back-to-back comparison is dead.
It isn’t only the dirt. Air temperature moves your pressures underneath you too — Speedway Motors puts it at roughly 0.8 psi for every 10°F swing in air temperature (Speedway Motors). A morning cold pressure and an evening cold pressure are not the same pressure.
What to do about it:
Hot laps are the short at-speed practice that opens a race program. The Super DIRTcar Series puts it this way: “Group practice sessions of three or more laps (depending on track size) are run at speed for drivers to ensure their cars are ready for qualifying” (Super DIRTcar Series). Note the job description: make sure the car is ready. Not: evaluate a spring change.
That’s the right way to think about the first session of a test day too. Your opening runs are the least representative laps you’ll turn all day:
So run session one as a checklist, exactly like hot laps: temperatures, oil pressure, no leaks, brakes bedding, nothing rubbing, gauges reading. Come in, put it on the jack, walk around it. Finding a loose fitting in the pits instead of in turn three is a win.
Set your real baseline in session two, once the tires have cycled and the driver has quit thinking about where to brake. Everything you compare comes after that.
One row per run, filled in the same way every time. A test day with no record is just an expensive practice session.
| Field | Why it matters |
|---|---|
| Run number and clock time | Anchors every other reading to a point in the day |
| The one change made | The variable under test, stated in one line |
| Track condition and prep notes | Whether this run is comparable to the last one |
| Air temp and moisture | Explains pressure drift and grip that “went away” |
| Cold and hot tire pressures | Cold is what you set; hot is what the track gave back |
| Tire temps across the tread | Inside, middle, outside, same probe depth every time |
| Best lap and average lap | Average catches consistency that a single hero lap hides |
| Driver feel: in, middle, off | Where the car is loose or tight, in the driver’s own words |
| Keep, revert, or rerun | Your decision, recorded while it’s fresh |
Fill it in before you touch the car for the next change — not on the drive home. Every racer who ever said “I’ll remember” got home with a blank page. If you don’t have a format you like, start with a proper setup sheet and add the run columns.
Before the trailer doors close, while the sheets are still in front of you, sort the day into three piles:
Then state your race-night baseline out loud, as a team, before anybody starts the truck. A test day that ends without a stated baseline hasn’t ended — it’s just stopped.
One honest caveat: testing spends tires. A new set wants an easy initial heat cycle and then a minimum of 24 hours’ rest before you run it again, which is a one-time procedure on new rubber rather than something every session demands — and on the tire Grassroots Motorsports tested, doing it right bought “improved lap times, longer service life and reduced wear” (Grassroots Motorsports). Test on a set you’re willing to spend and save your stickers for the night that pays.
Four or five real changes is a full, honest day for most grassroots teams. Each one needs a baseline run, a change run, a rerun if the track moved, and time to write it down. Plan ten and you’ll rush the middle and throw out the back half. Fewer changes with clean data beats more changes with muddy data, every time.
Yes, arguably more so. New drivers get more out of a practice day than veterans do, because seat time and track familiarity are the biggest lever you have early on. Pit admission for practice is often a fraction of a race-night entry — Anderson Speedway listed a $20 pit pass for open practice in May 2026 — and nothing you break costs you a points night.
Bracket the test. Run your baseline, run the change, then put the baseline back and run it once more. If baseline two matches baseline one, the track held and your comparison is real. If it doesn’t, the surface moved and the honest answer is “unknown.” Log the prep and the time of day on every run so you can tell them apart later.
Only for confirming the car is right. Hot laps are short, the track is at its greenest, and everybody’s out there at once. Fine for checking temps, brakes and leaks. Useless for judging a setup change. Save real comparisons for a test and tune, where you control how many laps you get and when you take them.
Check nearby tracks with a similar surface and banking, and look for weeknight or kart practice sessions. Open practice is often posted separately from the race schedule, so it won’t show up on the points calendar. Failing that, a shop day on scales and a shock dyno answers a different set of questions for less money.
You can run all of this with a clipboard, a stopwatch and a good crew chief. Plenty of championships were won that way. But the parts of a test day that go wrong are almost always the recording parts — the run you didn’t log, the pressure you meant to write down, the conclusion you were sure you’d remember. RaceNight was built for exactly those tasks:
Log your next test day in RaceNight — on iOS and Android, with a 14-day free trial. Starting on paper? Grab a free printable Spring Smash setup sheet and run your first change list off that. From there, read how to build a setup sheet that finds speed, get your head around a dry-slick setup before your next dry test, and see how a race night is actually structured so you know which sessions you’re really buying on a Saturday.
Run into a term on your run sheet you’d have to look up? Start with the RaceYear racing glossary.
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