What thread pitch are Subaru Impreza lug nuts?
Subaru Impreza lug nuts typically use M12 x 1.25 thread pitch. This is the standard for most model years and wheel configurations.
However, there are variations depending on generation, regional market, and whether you’re using OEM or aftermarket wheels. Always confirm for your exact vehicle before buying replacements, especially if you’re planning to fit aftermarket rims.
Common thread pitch across Impreza generations
The following notes summarize the typical specifications and important caveats to keep in mind.
- M12 x 1.25 is the standard thread pitch for most Subaru Impreza models.
- Some older generations or special edition models may differ; always verify with official documentation for your year.
- When using aftermarket wheels, ensure both the thread pitch (M12 x 1.25) and the seat type match your wheel and hub configuration.
In practice, M12 x 1.25 serves as the baseline for most Impreza applications, with exceptions relying on documentation or direct confirmation from a dealer.
How to verify for your vehicle
To confirm your exact lug-nut specification, follow these steps.
- Check the owner’s manual or Subaru service literature for your model year’s lug-nut specification.
- Inspect the existing lug nuts or wheel studs for markings or part numbers that indicate M12 x 1.25.
- If markings aren’t clear, measure the thread pitch with a thread-pitch gauge, or compare with a known M12 x 1.25 nut.
- Consult a Subaru dealer or a trusted auto shop, providing your VIN and wheel size, to confirm the correct spec.
- When replacing wheels, ensure the nuts match both thread pitch and seat type (commonly a 60-degree conical seat) to avoid damage.
Following these steps helps prevent cross-threading, improper seating, and safety risks from incorrect lug-nut specifications.
Notes for aftermarket wheels
Aftermarket wheel setups often still use M12 x 1.25, but variations can occur depending on the wheel model and market. Always verify with the wheel manufacturer and ensure compatibility with Subaru hub design and seat type.
- Most aftermarket wheels for Impreza are designed for M12 x 1.25 with a compatible seat type.
- Some wheels may require a different thread pitch or lug-nut style; check specifications before purchase.
- Using the correct lug-nut seat type (e.g., 60-degree conical) is as important as the thread pitch for proper seating and torque.
Properly matched lug nuts ensure safe mounting and reliable torque when driving, especially on performance or winter setups.
Summary
For Subaru Impreza vehicles, the typical lug-nut thread pitch is M12 x 1.25. Verify this value for your exact model year and wheel configuration—especially if you’re using aftermarket wheels—by consulting the owner’s manual, checking dealer guidance, or measuring with a thread-pitch gauge. Accurate specification helps ensure proper seating, torque, and long-term safety.
