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1. Locate the Vehicle Identification Number (VIN) of the vehicle. The VIN is usually found on the driver's side door jamb or on the dashboard near the windshield.
2. Once you have the VIN, you can look up the vehicle's specifications online. You will need to enter the VIN into the search engine and click search to get access to the vehicle's specifications.
3. The gear ratio will be listed under the "Transmission" section. The gear ratio will be listed as a two numbers, such as 3.55 or 3.92. The first number is the number of teeth on the ring gear and the second is the number of teeth on the pinion gear.
4. Knowing the gear ratio can be helpful when selecting the correct replacement parts or modifying your vehicle's drivetrain.
