Guide

How to get .ibt files from iRacing

iRacing can record raw telemetry directly to .ibt (iRacing Binary Telemetry) files whenever in-car logging is active. That recording is your session: position on track, speed, throttle, brake, steering, gear, and lap data. The file also records the session's weather, which shows up on your laps. Hit Your Apex parses these files directly, so the only setup you need is the logging toggle, and it takes about a minute to set up.

1. Configure the telemetry hotkey

Before you head onto track, check (or assign) the shortcut that toggles recording.

  1. 1
    Launch iRacing: Load into any practice or test session.
  2. 2
    Open Options: From the top navigation bar, open the Options menu.
  3. 3
    Select the Control tab: You'll see your controls listed on the right.
  4. 4
    Find the Telemetry toggle: It sits with the other controls/replay entries.
  5. 5
    Note or remap the shortcut: The default is Alt + L, but you can map it to a button on your wheel or keyboard.
  6. 6
    Save: Click Done.

2. Enable recording in-car

Telemetry is recorded per stint, while you're sitting in the cockpit.

  • Start logging:once you're buckled in, press Alt + L (or your mapped control). A telemetry indicator with the text Telemetry Logging, or a blinking circle, briefly flashes on your HUD to confirm it's on.
  • Stop logging: press Alt + L again before you exit, or just hit Escape and tow/exit back to the pit stall.

Important: iRacing only writes the .ibt file to disk when you stop recording or exit the car. If the game crashes mid-session or closes abruptly, the active file may not be finalised.

3. Locate your .ibt files

Files are saved locally to your Windows Documents directory:

C:\Users\<YourUsername>\Documents\iRacing\telemetry\

(or %USERPROFILE%\Documents\iRacing\telemetry\)

They're named chronologically with the car, track, and session timestamp:

[CarName]_[TrackName]_[Year]-[Month]-[Day]_[Hour]-[Minute]-[Second].ibt

Example: dallaraf3_spa 2024-05-12 14-30-15.ibt

Optional: record every session automatically (advanced)

Don't want to press Alt + L every time you get in the car? You can force iRacing to record telemetry automatically on every stint.

If you use Garage 61: the Garage 61 desktop agent already enables this setting behind the scenes, so your sessions are already recording .ibt files automatically. Nothing to do.

Otherwise, set it manually in app.ini:

  1. 1
    Close iRacing: The file is only safe to edit while the game is off.
  2. 2
    Open your iRacing config folder: Documents\iRacing\ in File Explorer.
  3. 3
    Edit app.ini: Open it in Notepad (or any text editor), then press Ctrl + F and search for [Telemetry].
  4. 4
    Find telemetryLogAutoStart: You'll find telemetryLogAutoStart=0.
  5. 5
    Set it to 1: Change it to telemetryLogAutoStart=1, then save and close the file.

Tip: .ibt files average 20–50 MB per stint. Check Documents\iRacing\telemetry\every so often (Garage 61 has a built-in cleanup if you use it) so your drive doesn't fill up.

Uploading to Hit Your Apex

  1. 1
    Log in and open My Laps: The My Laps page is where your own sessions live.
  2. 2
    Upload the .ibt: Click Upload .ibt session and pick the file.
  3. 3
    That's it: One file is one session. Every lap in it is parsed and listed, so you can compare them and share them with your coach.

Good to know

  • Set the hotkey once, and remember to flip logging on at the start of each stint.
  • If a file is missing or truncated, iRacing most likely crashed before it could finalise the recording.
  • .ibt is iRacing's standard raw telemetry format, the same one used by third-party analysis tools.
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