Parts for your 2008 Subaru Outback-Wheel studs nuts

2008 Subaru Outback wheelstudsnuts — purpose, care and replacement

Yes, wheelstudsnuts are absolutely used on the 2008 Subaru Outback. The Subaru Factory Service Manual for the BP/BL series (covering MY2008), Subaru’s genuine parts catalogue, and common workshop references (e.g., Autodata and Haynes) all show a hub with pressed-in wheel studs and tapered-seat wheel nuts securing the wheel. So, wheelstudsnuts are relevant to this model and a routine service item whenever tyres or brakes are off.

On this Outback, the studs are pressed into the hub flange and the tapered (conical) wheel nuts clamp the wheel and brake rotor firmly to the hub. That clamping force is what keeps the wheel centred and safe at highway speeds over Aussie and Kiwi roads. Typical Subaru spec calls for tightening the nuts to about 120 N·m (around 88–90 lb‑ft) on clean, dry threads, done in a star pattern. After a wheel’s been off, it’s good practice to recheck torque after 50–100 kilometres.

As part of regular servicing, it’s worth a quick look at the wheelstudsnuts. If a nut feels gritty, the hex is rounded, or a stud’s thread looks stretched, pitted, or cross‑threaded, replacement is cheap insurance. Subaru uses fine‑pitch M12×1.25 threads and a 60° taper seat, so mixing in the wrong nuts (like ball-seat or M12×1.5) can damage the studs and the wheel. Threads should be clean and dry—no anti‑seize or grease on the stud threads, because lubrication alters clamp load and can over‑stress the stud.

• Fitment and service tips for the 2008 Outback wheelstudsnuts:
  1. Tighten in a star pattern with a torque wrench, avoid “sending it” with a rattle gun for final torque.
  2. Re-torque after 50–100 km any time a wheel’s been off.
  3. If a stud spins in the hub, replace it—don’t try to “make it bite”.
  4. Replacing a broken stud? Remove the wheel and rotor (back off the rear park-brake shoe adjuster if needed), press or draw the old stud out, seat a new quality stud squarely, then torque the nut correctly.
  5. If corrosion is common in your area, lightly clean hub faces and stud threads with a brush, keep threads dry.

Backed by Subaru’s service literature and parts listings for MY2008, this Outback runs conventional wheel studs and tapered nuts, and keeping them tidy, matched, and correctly torqued helps tyres wear evenly, prevents brake judder, and keeps the family safe on long roadies.

Popular questions about 2008 Subaru Outback wheelstudsnuts

What size and torque are the wheelstudsnuts on a 2008 Subaru Outback?

The 2008 Outback uses M12×1.25 wheel studs and matching tapered-seat wheel nuts (60° cone). Most factory nuts take a 19 mm socket. Subaru workshop data specifies tightening to about 120 N·m (roughly 88–90 lb‑ft) on clean, dry threads in a star pattern. Always check the vehicle placard or service manual for confirmation.

When should wheel studs and nuts be replaced?

Replace any stud with damaged, stretched or rusty threads, or if a nut feels rough, cross‑threads, or its hex is rounded. If one stud fails, inspect the rest on that hub. Use correct M12×1.25, 60° taper-seat nuts to match the wheel, and avoid mixing seat styles.

Should anti‑seize be used on Subaru wheel studs?

Not on the threads. Subaru service guidance calls for clean, dry stud threads because lubricants change friction and can lead to over‑torque and stud failure. If wheels stick to the hub, a tiny smear of anti‑seize can go on the hub’s centre spigot only—never on the stud threads or nut seats.