Wheel Fitment - Offset Calc

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About this app

Worried about fender poke or strut rubbing before buying new wheels?
Wheel Fitment is the essential wheel offset calculator and fitment visualizer designed to help you dial in the perfect stance with zero guesswork.

[Get the Perfect Stance Without Costly Mistakes]
Upgrading rims or installing spacers? A few millimeters can mean the difference between an aggressive flush fitment and expensive fender damage. Simply input your current and new wheel specs to compare clearances in real-time.

[Key Features and Capabilities]
- Precision Offset & Width Math: Instantly calculate inner strut clearance and outer poke differences.
- 2D Visual Cross-Section: Compare before-and-after wheel positioning on an intuitive diagram.
- Wheel Spacer Simulator: Test spacer thicknesses and see effective offset (ET) & track width changes instantly.
- Shareable Fitment Card: Export high-resolution calculation summary cards to consult wheel shops or share with friends.
- 100% Offline & Private: No sign-ups, no tracking, and fully functional without an internet connection.

[Supported Units and Specs]
- Wheel Width: Inches (in)
- Wheel Offset: Millimeters (ET mm)
- Spacer Thickness: Millimeters (mm)

[Disclaimer]
Wheel Fitment calculates theoretical wheel position deltas. Real-world clearance depends on tire profile, suspension compression, camber alignment, and brake caliper dimensions. Always verify physical clearance before aggressive driving.

Download Wheel Fitment today and find your perfect wheel fitment with confidence!
Prevent fender poke & strut rub! Compare wheel width & offset (ET) instantly.
Updated on
Aug 20, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

- Added spacer support for current wheels
- Enhanced in-card effective ET display
- Clean typography splash screen
- Performance optimizations