Car Tire Size Calc
Rim Offset & Speedo Compare
Only for iPhone
$0.99 · Designed for iPhone. Not verified for macOS.
iPhone
Compare two tire + rim setups side by side. See speedometer error, clearance change, offset/stance shift, and export results as PDF. Metric or imperial.
Compare your current tires and rims to a new setup before you buy. Upgrade with confidence and see exactly how changes affect your vehicle's performance. Tire Size Calculator shows speedometer error, clearance change, sidewall height, circumference, rim offset (ET), and wheel stance shift — with metric or imperial units.
Share or print PDF report with mechanic or friend.
- Speedometer Accuracy: Instantly check speedometer differences to avoid miscalculations.
- Ground Clearance Impact: See how new tire sizes influence your car’s ride height.
- Multiple Unit Support: Choose between Metric and Imperial measurements for convenience.
- User-Friendly Interface: Designed for quick and easy comparisons—no complex formulas required!
Make informed decisions and optimise your vehicle’s performance with precision. Perfect for upsizing wheels, checking plus-sizing, or verifying fitment before installation.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Store listing update
The developer, Yaroslav Martsynyuk, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yaroslav Martsynyuk
- Size
- 6.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Yaroslav Martsynyuk
