What size are the wheel nuts on a Subaru Impreza?
The typical lug nut size for a Subaru Impreza is M12 x 1.25 with a 60-degree conical seating surface, but there are variations by model year and wheel type. Always verify for your specific vehicle by checking the owner's manual, the wheel specs on the door jamb label, or the lug nuts themselves.
Understanding lug nut sizing on the Impreza
Lug nuts are defined by three main factors: thread diameter, thread pitch, and the seating type. For most Subaru Impreza models, the wheel studs are M12 in diameter and use a 1.25 mm thread pitch, paired with a 60-degree conical (often called conical or acorn) seat. The Impreza also commonly uses a 5x100 bolt pattern, which helps determine compatible wheels and nuts. However, some trims or aftermarket wheels can deviate from this standard, so confirmation is essential before purchasing replacements.
Typical lug nut size you are likely to encounter
The following list summarizes sizes you are most likely to encounter on factory or commonly installed wheels for the Impreza. Use it as a baseline, but always double-check for your exact car.
- M12 x 1.25 with a 60-degree conical seat (the most common configuration on modern Impreza models).
- Note: Some aftermarket wheels or regional variants may use the same thread diameter but a different seating style or a different pitch; rare cases exist where M12 x 1.5 is used in aftermarket setups.
Because wheel compatibility is sensitive to both thread pitch and seat type, relying on default assumptions can lead to incorrect nut sizes. Always confirm with your vehicle’s documentation or a professional if you’re replacing wheels or lug hardware.
How to confirm the exact lug nut size for your car
To be certain you have the correct lug nuts, use these verification steps.
- Check the owner’s manual or the specification label on the driver’s door jamb for lug nut size, thread pitch, and seat type.
- Inspect an existing lug nut on the car: measure the thread diameter with calipers and check the thread pitch or consult the markings on the nut itself.
- Contact a Subaru dealer or a trusted tire/wheel shop with your VIN to obtain the exact lug nut specification for your trim and year.
Following these steps will help ensure you select the correct lug nuts for your Impreza, whether you’re mounting OEM wheels or aftermarket rims.
What to do if you’re replacing wheels or upgrading
If you’re changing wheels or upgrading, keep these tips in mind to avoid fitment issues.
- Confirm the bolt pattern is 5x100 for Impreza models commonly in circulation.
- Verify the seat type and pitch match your new wheel’s lug holes and studs.
- Check any required lug nut length or shoulder clearance to ensure the wheel sits properly and the nuts torque correctly.
When upgrading, it’s often simplest to source a lug nut kit designed for your specific wheel and model year to ensure proper fit and safety.
Summary
In most Subaru Impreza applications, you’ll find M12 x 1.25 lug nuts with a 60-degree conical seating surface, usually paired with a 5x100 bolt pattern. However, variations can occur by year, trim, or aftermarket wheels. Always verify with the owner’s manual, the vehicle’s labeling, or a professional to confirm the exact size before purchasing or installing lug nuts or wheels.
