What size are the rotors on a Ford Explorer?
There isn’t a single universal rotor size for the Ford Explorer. Rotor diameter varies by model year, trim, and braking package. In general, front brake rotors are around 12 inches in diameter, while rear rotors are close to 11–12 inches; exact numbers depend on the specific vehicle configuration.
Understanding rotor size across generations
Rotor size has evolved with redesigns, engine options, and braking technology. The numbers you need to match are defined by the front brake disc diameter on the front axle and the rear disc diameter on the rear axle. The ranges below reflect typical configurations found in recent Explorers.
- Front rotors: commonly about 12.0 to 12.9 inches (304 to 328 mm) in diameter depending on trim and year.
- Rear rotors: commonly about 11.0 to 12.0 inches (279 to 305 mm) in diameter depending on trim and year.
Keep in mind that exact sizes can vary, especially with optional brake packages or performance variants. When in doubt, always confirm with official parts data for your VIN.
How to determine your exact rotor size
To ensure you buy the right rotors or check your current rotor specifications, follow these steps.
VIN-based size lookup
Using your VIN, Ford’s official catalogs return the precise rotor diameters and compatible parts for your Explorer’s year and trim.
- Check your vehicle’s owner’s manual or a reliable service manual for the brake specifications, which list the rotor diameter for the front and rear axles.
- Use Ford’s official parts lookup or Ford MyFord app with your VIN to retrieve the exact rotor sizes and part numbers.
- Physically measure your rotors if you have access to the wheel area: measure the outer diameter across the braking surface and note whether the rotor is ventilated or solid.
- Inspect any stamping on the rotor or its packaging for a diameter or part number that confirms the size.
- If you’re replacing rotors, match the size exactly to the brake package and year to maintain braking performance and ABS calibration.
Relying on VIN-based lookup is the most reliable method, as Ford’s catalogs tailor sizes to the specific vehicle configuration.
Why rotor size matters
Rotor diameter affects stopping power, heat dissipation, and wear. Using the correct size ensures proper caliper alignment, pad contact, and ABS operation. Using the wrong size can compromise braking performance and safety.
Summary
The Ford Explorer does not have a single rotor size. In recent models, front rotors typically run about 12.0–12.9 inches in diameter and rear rotors about 11.0–12.0 inches, with exact figures tied to year, trim, and brake package. To be sure, verify the specific sizes for your vehicle via VIN-based Ford parts catalogs or the owner’s manual, especially when purchasing replacements.
How do I tell what size my rotors are?
To measure a rotor's size, find its diameter by measuring across its center with a tape measure or caliper, and its thickness by using a micrometer or caliper at multiple points on the friction surface. For the most accurate measurements, remove the rotor from the vehicle first.
This video demonstrates how to measure the rotor's diameter without removing it: 33sSouthSideMobileBrakeService.YouTube · Feb 18, 2025
Measuring rotor diameter
- Method 1: Measure with the wheel removed
- Use a tape measure or a large caliper.
- Measure from one outer edge of the rotor straight across to the opposite outer edge, ensuring the measurement goes through the exact center.
- Method 2: Measure with the wheel on
- Use a large caliper or a method using a paper template with a hole for the hub to make an imprint on the paper, then measure the imprint.
- Another method is to use two magnetic markers attached to the rotor's surface and a tape measure to measure the distance between the magnets.
Measuring rotor thickness
- Method 1: Measure with the wheel removed
- Use a micrometer or a caliper.
- Measure the thickness at several different points along the friction material of the rotor to account for wear.
- Method 2: Measure with the wheel on
- Use a small caliper to measure the thickness in a few spots on the rotor's surface.
Other important measurements
- Hat height: With the rotor upside down on a flat surface, measure the distance from the base to the start of the friction material.
- Runout: Use a dial indicator to check for runout, which is an indicator of rotor wobble.
You can watch this video to learn how to measure brake rotor thickness: 58sDriver's TherapyYouTube · Jul 9, 2025
What size rotors are on a 2013 Ford Explorer?
A: Ford Explorer vehicles between 2011 and 2017 can be equipped several sizes of rotor (and matching caliper). The rear axle rotors are sized as 325mm, 330mm, 345mm, and 352mm. The front rotors are sized 325mm (standard) and 352mm (heavy duty & police).
What size are the rear rotors on a 2018 Ford Explorer XLT?
Front Rotor Size: 12.8 in. Rear Rotor Size: 12.8 in. Curb Weight: 4629 lbs. Wheelbase: 112.8 in.
What size rotors are on a Ford Explorer?
Store Categories
| MAKE | MODEL | SPECIFIC DETAILS |
|---|---|---|
| FORD | EXPLORER | XLT; Limited; Sport; 13.86 inch (352mm) FRONT ROTOR SIZE (HD BRAKE OPTION) |
| FORD | EXPLORER | XLT; Limited; Sport; Platinum Models ; 13.86 inch (352mm) FRONT ROTOR SIZE (HD BRAKE OPTION) |
| FORD | POLICE INTERCEPTOR SEDAN | All Models |
| FORD | POLICE INTERCEPTOR UTILITY | All Models |
