What size are the lug nuts on a Subaru Legacy?
For most Subaru Legacy models, the lug nuts use a 19mm wrench size and have M12x1.25 threads with a 60-degree conical seat. However, there are exceptions based on year, trim, and aftermarket wheels.
Typical lug nut specifications for the Subaru Legacy
The following details cover the most common specifications you’ll encounter on factory and standard aftermarket wheels for the Legacy. Always verify for your exact build.
- Thread size: M12 x 1.25 (metric). This is the size of the stud the lug nut threads onto.
- Hex size (wrench size): 19 mm is the standard socket size used on most Legacy lug nuts.
- Seat type: 60-degree conical seat. This is the contact point between lug nut and wheel.
- Wheel compatibility: Factory wheels and many OEM replacements typically use these specs; some aftermarket wheels may require different sizes or seat types.
Variations exist depending on year, trim level, wheel design, or aftermarket parts. If in doubt, check the exact hardware listed for your vehicle or consult a dealer.
How to verify the exact lug nut size for your Legacy
To ensure you have the correct hardware for your specific vehicle, follow these steps:
- Consult the owner's manual or Subaru's official service information for wheel hardware specifications corresponding to your model year and trim.
- Inspect the lug nuts currently installed on your car and determine the wrench size by trying a 19 mm socket; if it doesn’t fit, try the next size cautiously (commonly 21 mm) to avoid rounding.
- Examine the wheel seating and studs to confirm the correct type (60-degree conical seat is common on Subarus).
- If using aftermarket wheels or locking nuts, verify with the wheel manufacturer or a Subaru service professional to ensure correct thread pitch and seat type.
Accurate verification helps prevent damage during removal or installation and ensures proper torque application. When uncertain, a dealership or tire shop can confirm the exact lug nut size for your VIN and wheel setup.
Common variations by year and wheel option
While 19 mm hex size with M12x1.25 threads and a 60-degree conical seat covers the majority of Legacy configurations, there are edge cases. Some early models, trims with unique wheel packages, or aftermarket wheels may require a 21 mm hex or a different thread pitch. Always verify the exact hardware for your particular wheels.
Summary
In short, the standard lug nut configuration for most Subaru Legacy models is a 19 mm hex with M12 x 1.25 threads and a 60-degree conical seat. However, check your specific vehicle and wheels to confirm, especially if you own aftermarket rims or a less common trim.
