Chevrolet Wheel Fitment Calculator
Compare wheel width, diameter, offset, tire size, and other specifications to estimate changes in wheel position and tire diameter.
Stock Wheel
Proposed Wheel
About the Chevrolet Wheel Fitment Calculator
Wheel and tire changes affect handling, clearance, and speedometer accuracy. The Chevrolet Wheel Fitment Calculator compares stock and proposed wheel specifications including diameter, width, offset, tire size, and spacer thickness, and estimates changes in wheel position, inner clearance, and tire diameter.
Formula used
offset change (mm) = new offset - stock offset
width change (mm) = (new width - stock width) x 25.4
outer position change = offset change + width change / 2 + spacer
inner clearance change = -offset change + width change / 2 - spacer
tire diameter difference = alternative tire diameter - stock tire diameter (inches)How to use
- Enter stock wheel diameter, width, offset, and tire size.
- Enter proposed wheel diameter, width, offset, and tire size.
- Optionally enter spacer thickness.
- Click Calculate to see position and clearance changes.
Limitations
Calculations are geometric estimates. They do not guarantee brake, suspension, or body clearance. Verify fitment professionally before purchasing wheels or tires.
Frequently asked questions
What does offset mean?
Offset is the distance from the wheel's mounting surface to the centerline of the wheel, in millimeters.
Will a wider wheel fit?
It depends on clearance. Use the inner clearance result and verify with a professional.
Can I use spacers?
Spacers change position; include their thickness in the calculation and verify clearance.