Parts for your 2009 Subaru Forester-Wheel studs nuts

2009 Subaru Forester wheel studs and nuts — what they do and how to look after them

Technical sources confirm that the 2009 Subaru Forester (SH series) uses wheel studs and wheel nuts to secure each wheel. The Subaru Forester SH Service Manual (Chassis/Wheel & Tyre section) details the hub-and-stud arrangement and specified tightening torque for the wheel nuts, while Subaru’s genuine parts catalogues list separate part lines for “wheel stud” and “wheel nut” for MY2009 Forester. So yes, wheel studs and nuts are absolutely relevant and fitted on this vehicle.

On a 2009 Forester, the wheel studs are press-fitted into the hub, and the wheel nuts clamp the wheel to those studs. This setup gives quick wheel changes, consistent clamping force, and reliable alignment of the wheel on the hub—handy for daily use and rough Kiwi and Aussie roads alike.

Purpose-wise, the studs provide the threaded anchors, and the nuts deliver the clamping force that holds the wheel and brake rotor firmly against the hub face. Proper clamping keeps the rotor true, the wheel centred, and vibration at bay. Subaru specifies a tapered-seat wheel nut design matched to the wheel seats, with a common thread size of M12 x 1.25 for this era. Always match seat type and thread pitch to avoid damage.

For servicing, a few simple habits go a long way:

• Torque correctly: Subaru specifies around 120 N·m for the 2009 Forester. Use a torque wrench and tighten in a criss-cross pattern. If an impact gun is used to snug the nuts, always finish with a torque wrench.
• Keep it dry: Install wheel nuts on clean, dry threads. Lubricants or anti-seize can over-stretch studs by altering torque, which Subaru cautions against.
• Re-torque after a short run: After 50–100 km, re-check torque—especially after tyre rotations or new wheels.
• Inspect often: Look for stretched or rusty studs, damaged nut caps, or chewed threads. Replace any suspect studs or nuts immediately.
• Stud replacement: Press-in studs should be changed with the hub supported and the correct tools. Avoid drawing new studs in with a nut and washer, which can damage the stud or hub.
• Wheel-to-hub contact: Clean the hub face and wheel mounting pad of rust and debris to ensure true clamping and prevent loosening.

Done right, the wheel studs and nuts on a 2009 Subaru Forester will give thousands of kilometres of hassle-free service and keep the ride safe, smooth, and legal.

Popular questions about 2009 Subaru Forester wheel studs and nuts

What’s the correct torque for the wheel nuts on a 2009 Forester?

Subaru specifies approximately 120 N·m for this model year. That’s the sweet spot for proper clamping without over-stressing the studs. Always tighten in a star pattern to seat the wheel evenly.

If unsure, check the owner’s manual or workshop data for the exact figure for the wheel type fitted. Re-torque after 50–100 km following any wheel service.

Can anti-seize be used on Subaru wheel studs?

Best practice for the 2009 Forester is to install wheel nuts dry on clean threads. Anti-seize or oil can significantly change the torque-tension relationship and may lead to over-tightening or stud failure.

If corrosion is present, address the root cause—clean the threads or replace damaged hardware—rather than adding lubricants.

How do I know if a stud or nut needs replacing?

Look for stripped or flattened threads, visible stretching, cross-threading, cracked or swollen nut caps, and any stud that won’t hold torque. Vibration or a wheel that keeps loosening is another red flag.

When replacing, match thread pitch (commonly M12 x 1.25) and the correct tapered seat. Replace in sets if wear is uneven, and torque to spec.