Parts for your 2008 Subaru Tribeca-Wheel studs nuts

2008 Subaru Tribeca wheelstudsnuts — what they do and how to look after them

Based on Subaru factory documentation (2008 Tribeca/B9 Tribeca Service Manual, Chassis – Wheels &, Tyres) and the Subaru FAST electronic parts catalogue for the 2008 Tribeca (5×114.3 hub pattern), this model uses pressed-in wheel studs with matching lug nuts. So wheelstudsnuts are absolutely relevant to the 2008 Subaru Tribeca.

On this Tribeca, wheelstudsnuts provide the clamping force that secures the wheel to the hub. The studs are splined and pressed into the hub flange, the nuts thread onto them with a 60° tapered seat to centre the wheel and hold it tight. Get this right and the car tracks straight, brakes cleanly, and looks after its tyres on the school run, the motorway, and the long haul across New Zealand or Australia.

Subaru specifies a dry install and a torque of about 120 N·m for the wheel nuts on the 2008 Tribeca. The OE hardware is typically M12 × 1.25 thread with a conical seat, designed to work with the factory alloy wheels. Using the correct seat type matters, a mismatched nut can chew out the wheel seat and reduce clamping load. Over-tightening with a rattle gun can stretch studs and crack nuts, while under-tightening can let the wheel fret and loosen.

As part of regular servicing, it pays to inspect wheelstudsnuts for damaged threads, rust pitting, or signs of overheating (blueing) from a previous over-torque. If a nut goes on rough, don’t force it—bin it and replace. Any stud that spins in the hub, is cross‑threaded, or shows necking should be replaced. Because studs are press-fit, replacement involves driving out the old one and drawing in a new stud square to the flange, many owners leave this to a technician with the right press tools.

Good habits help the Tribeca’s wheelstudsnuts last the distance:

• Fit nuts by hand first, then torque in a star pattern to 120 N·m.
• Avoid lubricants or anti-seize on threads or seats unless a service bulletin says otherwise.
• Re-check torque after 50–100 kilometres any time the wheels have been off.
• Use only the correct 60° conical-seat nuts for OE wheels, mag-seat or ball-seat nuts are not suitable.
• If a stud breaks, replace the damaged one promptly and inspect its neighbours.
• When swapping to aftermarket wheels, confirm hub bore, seat style, and nut length to maintain full thread engagement.

Look after the wheelstudsnuts and the 2008 Tribeca will return the favour with safe, drama-free kilometres.

Popular questions about 2008 Subaru Tribeca wheelstudsnuts

What’s the correct torque for 2008 Tribeca wheel nuts?

The factory specification is around 120 N·m for the wheel nuts when installed dry. Use a calibrated torque wrench and tighten in a criss-cross pattern to seat the wheel evenly.

If a rattle gun is used to remove nuts, always finish tightening with a torque wrench. Re-check torque after 50–100 km following any wheel or tyre work.

What thread size and seat type does the Tribeca use?

The 2008 Tribeca typically uses M12 × 1.25 studs with 60° conical-seat nuts on the OE alloys. This pairing centres the wheel and provides consistent clamping force.

Mixing seat types (e.g., ball-seat or mag-seat nuts) can damage the wheel and reduce clamping load. Always match the nut seat to the wheel design.

When should wheel studs or nuts be replaced?

Replace any stud with damaged or stretched threads, visible corrosion pitting, or if it spins in the hub. Nuts with rounded flats, cracked seats, or rough threads should also be binned.

If one stud fails from over-torque, inspect the rest on that hub. It’s cheap insurance to replace suspect hardware before a long trip.