How can I tell what size my rotors are?
To determine the size of your vehicle's brake rotors, you'll need to measure the diameter of the rotor. This information is crucial for ensuring you purchase the correct replacement parts when servicing your brakes. In this article, we'll guide you through the steps to accurately identify your rotor size.
Measuring Rotor Diameter
The most straightforward way to determine your rotor size is to measure the diameter of the rotor itself. Here's how to do it:
- Park your vehicle on a level surface and apply the parking brake.
- Locate the brake rotor, which is the large, circular disc behind the wheel.
- Use a caliper or ruler to measure the diameter of the rotor from one outer edge to the other. Measure in inches or millimeters, whichever is more convenient.
- The measurement you obtain is the rotor diameter. Common rotor sizes include 10, 11, 12, 13, and 14 inches.
If you don't have a caliper or ruler handy, you can also try to identify the rotor size by looking for a stamped number on the rotor itself or on the brake backing plate. This number will indicate the rotor diameter in inches.
Checking Your Owner's Manual
Another reliable way to determine your rotor size is to consult your vehicle's owner's manual. The manual will typically list the factory-installed rotor size for your specific make, model, and year. This information can be helpful if you're unsure of the rotor size or if the rotor is not easily accessible for measurement.
Considerations for Replacement Rotors
When purchasing replacement brake rotors, it's essential to match the size of the new rotors to the original equipment. Using the wrong size rotor can lead to issues with brake performance, uneven wear, and potential safety concerns. Be sure to double-check the rotor diameter and other specifications to ensure a proper fit for your vehicle.
Knowing your rotor size is a crucial step in maintaining your vehicle's braking system. By following the steps outlined in this article, you can easily determine the diameter of your brake rotors and ensure you purchase the correct replacement parts when needed.
