How do I find the size of brake rotors for my car?

For 2009 to 2019 the standard brake pads are 312mm.

Mike

Vehicle Identification Number (VIN): The VIN of your vehicle contains a lot of information about the car, including specifications like brake rotor size. You can find the VIN on the dashboard on the driver's side (visible through the windshield) or on a sticker in the driver’s door jamb. Once you have the VIN, you can contact a Volkswagen dealership or use an online VIN decoder specific to Volkswagen to find out the rotor size.

Vehicle Manual: Sometimes, the vehicle’s manual provides specifications about various components, including brake rotors. Check your manual to see if it lists different rotor sizes for different models or trims.

Physical Measurement: If you have the tools and are comfortable doing so, you can measure the rotor size directly. To do this, remove the wheel and measure the diameter of the brake rotor using a tape measure or a caliper. Make sure to measure across the largest part of the rotor (from one edge to the opposite edge).

Existing Parts Information: If your Jetta still has its original rotors, the size might be stamped or labeled on the rotor itself. You would need to remove the wheel to check this.