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How to Change Aspect Ratio in Iracing

How to change aspect ratio in iRacing for single, ultrawide and triple screens. Step-by-step settings and quick troubleshooting so drivers fix display issues fast.

If you’re dealing with how to change aspect ratio in iracing, the fix is usually: set your desktop/GPU to the resolution that matches the aspect ratio you want, then pick that same resolution inside iRacing’s Display settings. You’re in the right place — below is a short explanation and a quick step-by-step fix.

Quick Answer — how to change aspect ratio in iracing

iRacing uses resolution (pixels) to determine aspect ratio. Change the aspect ratio by setting your monitor/GPU desktop resolution to the desired ratio (for example 1920x1080 for 16:9 or 3440x1440 for 21:9), then select that exact resolution in iRacing’s Options → Graphics → Display Resolution and restart iRacing if needed.

What’s really going on

Aspect ratio is just width divided by height (16:9, 21:9, etc.). iRacing doesn’t have a separate “aspect ratio” slider — it reads the resolution you run the game at. If your desktop or GPU scaling is forcing a different resolution, or if you’re running multi-monitor (triple) or ultrawide setups, iRacing will follow whatever combined desktop resolution you give it. That’s why you often change it in Windows or your GPU control panel first, then inside iRacing.

Step-by-step fix

  1. Decide the ratio you want (common examples: 16:9 = 1920x1080, 21:9 = 3440x1440).
  2. Set your desktop resolution in Windows: Right-click desktop → Display settings → Advanced display settings → choose the resolution that matches your desired ratio.
  3. If you use NVIDIA/AMD and want a custom or stretched resolution (triples/eyefinity), create a combined desktop resolution in the GPU control panel (NVIDIA Surround or AMD Eyefinity).
  4. Open iRacing → Options → Graphics → Display. In the Resolution drop-down, select the exact resolution you set on the desktop. Match refresh rate too.
  5. Set Window Mode to Fullscreen (or Borderless if you prefer) and click Save. Exit and relaunch iRacing if the change doesn’t apply immediately.
  6. For multi-monitor bezel correction: enable iRacing’s bezel compensation or enter the bezel values in the triple-screen setup tool, then confirm the combined resolution inside the game.

Extra tips / checklist

  • iRacing will only list resolutions your GPU/desktop reports — add custom resolutions in your GPU control panel if they’re missing.
  • Use Fullscreen Exclusive mode for best performance and correct HUD scaling; Borderless can be used if you need quick alt-tab but may behave differently.
  • If UI/HUD elements look wrong, adjust iRacing’s UI scale in Graphics settings after changing resolution.
  • For triple screens, ensure the GPU is set to span displays (Surround/Eyefinity) so Windows reports a single combined resolution.
  • Restart iRacing after major changes; some GPU scaling settings need a full restart to take effect.

FAQs

Q: Why doesn’t iRacing show my custom ultrawide resolution?
A: Add the custom resolution in your GPU control panel (NVIDIA/AMD) and restart Windows/iRacing. iRacing only lists resolutions the OS reports.

Q: Can I change aspect ratio without changing resolution?
A: No — aspect ratio is tied to resolution. To change the ratio you must use a resolution with that ratio.

Q: My HUD is stretched after changing to ultrawide — how fix?
A: Adjust UI scale in iRacing’s Graphics settings, or revert to a supported resolution. Check that your HUD profile is set for ultrawide/triple screens.

Q: I run triple monitors — do I need special settings?
A: Yes. Use NVIDIA Surround or AMD Eyefinity to span the three monitors into one desktop resolution, then pick that resolution in iRacing and set bezel compensation if needed.

Wrap-up

Changing aspect ratio in iRacing is a two-step job: set the desktop/GPU to the resolution that gives the ratio you want, then choose that resolution in iRacing’s Display settings. If something still looks off, check GPU scaling, UI scale, and restart the sim.