iRacing setups: fixed vs open and where to find them

A car setup buys you maybe a couple tenths a lap. At the Red Bull Ring one week, the spread from the fastest GT3 setup to the slowest was 0.348s. That gap decides the top split and almost nothing below it, which means the question “do I have to learn setups?” has a simpler answer than most new drivers fear: not yet, and maybe never.

Fixed vs open: what actually changes

Fixed series give everyone the same iRacing-supplied baseline and lock the in-car adjustments. You cannot touch the wing, the anti-roll bars, the diff, or the dampers. Open series let you run any setup you want — build your own, download one, or take the default into the session.

Some series ship in both flavors. The Porsche Cup runs as two parallel series — a fixed version and an open version — and plenty of drivers just take the fixed baseline into the open series so they can race without owning a setup.

The case for fixed is the case for a level field. The top comment on the recurring fixed-vs-open thread says it plainly: “In open I’m always wondering — is he a better driver, or does he just have a better setup?” Fixed removes the question. A 5000+ iRating driver put the other half of it: “Usually the fastest setup is the most dangerously loose setup,” and he’d rather race than test five sets every week.

Why iRacing’s fixed setups feel tight

iRacing’s own fixed setups are deliberately tight, understeery, and stable — not fast. That is on purpose. A safe setup lowers the average incident count across thousands of drivers, so the supplied set errs toward understeer and predictability over outright pace. TC and ABS are often locked too, which stings in the wet when you can’t dial them up.

So a fixed set feeling slow and pushy is expected. You’re all driving the same compromise, so it costs you nothing relative to the field.

Which one should you race?

Stay fixed early. You’ll learn the track, race lines, and racecraft without a second variable, and you’ll never lose a race to someone’s downloaded set. The 4.4k driver who measured that 0.348s spread said it directly: “Don’t fear open setup series” — setups are worth no more than a couple of tenths, decisive only in the top split.

Move to open when you’ve stopped finding lap time in your own driving and want the last few tenths, or when the series you want only runs open. Even then, you don’t need a setup shop on day one (more on that below).

Qualifying, race, and fuel: the variants that bite people

The fuel trap in open series

In open series you fuel the car yourself, and auto-fuel does not always give you enough. The classic mistake: “There isn’t enough fuel for a 30-minute race using the fixed setup. Lesson learned.” Brake-dragging or riding the throttle burns more than the calculator assumes, and drivers run dry on the last lap and DNF.

Before any open race, add a margin — fuel for the full race distance plus a lap or two, then check your per-lap burn in practice and adjust. Fixed races usually fuel you correctly; open races put it on you.

Qualifying setups

In a fixed race, the sim auto-applies the correct fixed set per session — you don’t pick the qual setup yourself. The confusion comes from testing: if you practice qualifying runs in a test session, you have to load the qualifying setup manually. Some fixed cars (Indycar on ovals) ship a separate qual set; on many cars “qualifying” just means less fuel.

Where to find good setups

Free

• iRacing baselines — each car ships with multiple sets in the garage and a Notes page explaining what each is for. The track-specific sets in the garage usually beat the raw baseline.
• Garage 61 — free telemetry and setup sharing, widely used; teams share their sets here. Not a shop, just data and files.
• SimRacingSetups (simracingsetup.com) — free track-specific sets that many drivers run with minor adjustments.
• Virtual Racing School (VRS) — free tier gives a small sample of setups plus data.

Paid shops

You don’t need one until you’re competing for podiums in open, and even then a skeptic’s take holds at low iRating: changing the ARB and wing alone is enough to be competitive in open up to ~2.6k. Some shops just tweak iRacing baselines and charge for it. If you do buy:

• Coach Dave Academy “Delta” — ~$11.99/mo or ~$109/yr; auto-installer, AI coaching, and telemetry in one app.
• Hymo (via Track Titan) — $12.99/mo standalone, built and validated by esports drivers; Track Titan “Ultra” ($19.99/mo) bundles both.
• Majors Garage — “Baseline+” easy-to-drive sets, updated weekly for popular series.
• Maconi Setup Shop — ~$19.99–$49.99/mo by tier and car coverage.

Prices move; treat these as ranges.

How to install a setup file

iRacing setups are .sto files living in Documents\iRacing\setups\<carname>\. Drop the file into the matching car folder, then in the garage open My Setups in the right-hand nav and load it. If your setups vanished after an update, check that the car folder name still matches — iRacing occasionally renames car directories.

How to know you’re ready to tune your own

You’re ready when you can drive a baseline consistently and feel a specific complaint — the rear steps out on entry, the front pushes mid-corner — rather than just “it’s slow.” Start small: adjust the anti-roll bar and wing before anything else, since those two changes cover most of the competitive gap in open at club level.

Then use telemetry to go further. Garage 61, VRS, and MoTeC/PI Toolbox show ride heights, tire temps, and fuel use lap over lap, which turns setup work from guessing into reading the data — see the companion apps overview for how these tools fit together. Pair that with a brake setup you can repeat — see pedals — because a setup is only as consistent as the inputs you feed it.