Wheel fitment check
Wheel fitment calculator.
Know what moves before the wheel does. Compare your current setup with a proposed wheel and tyre package. See how width, offset and rolling diameter change in real time.
- 01
- Enter your current setup
- 02
- Build the proposed setup
- 03
- Send the result for final review
Start with known numbers
Read the markings on your tyre and use the stamped wheel width and ET where available. Unsure? Choose a preset to see how the tool works.
Try a preset
Cross-section · axle view from behind · hub centre reference
Promising baseline
The key calculated changes are within a sensible range.
Use this as a comparison only. Final fitment still needs vehicle, brake, suspension and guard-clearance confirmation.
Rolling diameter
+13.9 mm
New tyre is taller than the current setup
Outer position
+11.4 mm
Further outward — more visual poke
Inner position
+1.4 mm
Slightly further inward — check clearance
Speedometer
+2.15 %
Within the tool’s ±3% comparison guide
Ready for a sanity check?
Send these calculated numbers with your vehicle details so MonzaWheels can confirm brake clearance, offset, and final pricing.
Calculation breakdown
Current
Wheel width: 241.3 mm
Wheel diameter: 482.6 mm
Sidewall height: 82.3 mm
Overall diameter: 647.1 mm
Overall radius: 323.5 mm
Outer from hub: 85.6 mm
Inner from hub: 155.6 mm
New
Wheel width: 254.0 mm
Wheel diameter: 508.0 mm
Sidewall height: 76.5 mm
Overall diameter: 661.0 mm
Overall radius: 330.5 mm
Outer from hub: 97.0 mm
Inner from hub: 157.0 mm
Next step
Not sure what the numbers should be? Send the car and we will resolve the fitment for you.