Find your car's original specs (Current wheel)

How to use the calculator:

1. Enter the specifications of your current wheels (width and offset/ET).

2. Enter the specifications of the new wheels you want to compare.

3. The calculator instantly shows how the new wheels will move in or out.

Try the best free Offset Calculator for wheels (ET Calculator) – the most accurate wheel fitment tool online. Instantly compare your current setup with new wheel widths and offsets (ET) to see how much the wheels move in or out. Perfect for checking clearance, stance, and fitment before buying new wheels. Trusted worldwide and developed by Aventador Wheels – premium forged wheel specialists.