Parts for your 2008 Subaru Exiga-Wheel studs nuts

2008 Subaru Exiga wheel studs and nuts

Technical sources confirm the 2008 Subaru Exiga uses wheel studs and separate wheel nuts (not wheel bolts). Subaru’s FAST electronic parts catalogue for the YA Exiga (MY2008) lists press-in wheel studs on the hub with individual nuts, and the Subaru service manual Wheels & Tyres section specifies a conical-seat nut tightened to the factory torque. Subaru passenger platforms of this era commonly run M12 x 1.25 threads, which aligns with the Exiga’s hardware.

On this model, the studs are pressed into the hub or axle flange, and the wheel is secured with nuts. It’s a simple, reliable setup that makes wheel changes quicker and reduces the risk of damaging hub threads. The nuts use a 60-degree conical seat to centre the wheel, so matching the correct seat type is crucial—mixing ball-seat or mag-seat nuts with conical-seat wheels is a no-go.

Purpose-wise, the studs provide the clamping interface, while the nuts deliver the clamp load that keeps the wheel firmly against the hub face. Good clamping equals even brake rotor retention, predictable handling, and no annoying vibrations. The Subaru owner’s manual spec for wheel nut torque is typically 120 N·m, a proper torque wrench and a star pattern tighten gets the job done. It’s smart to re-check torque after 50–100 km any time a wheel has been off.

For servicing, a few easy wins help keep things sweet:

• Run the nuts on dry and clean—no oil or anti-seize, as per Subaru service guidance, because lubricants change the torque-to-clamp relationship.
• Clean the hub face so the wheel sits flat, a wire brush on the hub (not the studs’ threads) is fine.
• Inspect studs and nuts for stretched or rolled threads, rust pitting, or mushrooms at the stud tip. Any of these call for replacement.
• If a stud spins in the hub or won’t hold torque, it’s likely the knurl has lost bite—press in a new stud rather than trying to “pull” it in with a nut and impact gun.
• Use nuts that match thread (M12 x 1.25) and seat style (60-degree cone). Closed-end OEM-style nuts help keep grime out.

When replacing, press the old stud out with the hub supported, and press the new one in square. If an impact is the only tool on hand, snug a sacrificial nut with washers to seat the stud gently—but a proper press is kinder on the hub. Done right, the Exiga’s wheel studs and nuts will deliver thousands of carefree kilometres.

Popular questions

What’s the correct wheel nut torque for a 2008 Subaru Exiga?
Subaru specifies around 120 N·m for this platform. Tighten in a star pattern, in stages, and re-check after 50–100 km of driving to account for settling. Avoid lubricants on the threads or seats, as that affects clamp force.

How do they know a stud or nut needs replacing?
Look for damaged or flattened threads, heavy corrosion, a stud that spins in the hub, or a nut that won’t hold torque. If the wheel has been over-tightened with an impact gun, assume the threads may be stretched and inspect closely.

Can anti-seize be used on Exiga wheel studs?
Best practice for this model is clean and dry threads. Subaru’s service guidance advises against oils and anti-seize on wheel studs and nut seats. If a lubricant is ever used, torque values would need adjusting—safer to keep them dry and clean.