Parts for your 2013 Subaru Forester-Wheel studs nuts

2013 Subaru Forester wheel studs and nuts: purpose, care, and replacement

Based on factory technical references — the 2013 Subaru Forester Owner’s Manual (Wheels and Tyres), the Subaru Service Manual via STIS (Subaru Technical Information System), and common Subaru specifications — this model uses wheel studs pressed into the hub with separate wheel nuts (not wheel bolts). The OE setup is five M12 × 1.25 studs per wheel with a 60‑degree tapered-seat nut, torqued to 120 N·m (88.5 ft‑lb). So yes, wheel studs and nuts are absolutely relevant and fitted to the 2013 Forester.

The studs provide fixed, strong threads in the hub, while the nuts clamp the wheel and brake rotor hat evenly to the hub face. This design makes wheel changes straightforward and helps maintain consistent clamping force for stable handling, even tyre wear, and proper brake performance.

As part of regular servicing, a quick once‑over of the wheel studs and nuts can prevent dramas on the road. Key checks include clean, undamaged threads, correct nut seating on the wheel’s taper, and proper torque. Subaru specifies tightening on clean, dry threads only — no grease or anti‑seize — and using a criss‑cross (star) pattern. After any wheel removal, it’s smart practice to re‑check torque after 50–100 km.

• Torque spec: 120 N·m (88.5 ft‑lb), star pattern, on dry, clean threads.
• Thread and seat: M12 × 1.25 studs, 60‑degree tapered (conical) seat nuts.
• Minimum engagement: aim for at least 7 full turns of the nut on the stud.

Signs a stud or nut needs replacing include cross‑threading, flattened or “mushroomed” stud tips, heavy rust pitting, stretched threads (nut won’t hold torque), or a stud that spins in the hub. Damaged or swollen nuts, mismatched seat types, or visible cracking are also red flags. Replace any suspect parts immediately, continued use risks wheel vibration, rotor runout, or a lost wheel.

When replacing studs, the proper method involves pressing the old stud out and the new stud in squarely after removing the brake calliper and rotor. Avoid heavy hammering that can stress the hub or wheel bearing. Always match thread pitch and seat style, and if running aftermarket wheels or lock nuts, confirm the seat type and required nut length for safe thread engagement.

For day‑to‑day care: avoid rattle‑guns for final tightening, keep hub faces and wheel seats clean, and never lubricate the threads unless a specific service bulletin for your exact setup says otherwise. Done right, the Forester’s stud‑and‑nut system is tough, safe, and easy to live with.

Popular questions

What’s the correct wheel nut torque for a 2013 Subaru Forester?

It’s 120 N·m (88.5 ft‑lb) on clean, dry threads. Tighten in a star pattern and re‑check torque after 50–100 kilometres of driving. Avoid lubricants or anti‑seize unless specifically instructed by a Subaru bulletin.

What thread size and seat type does the 2013 Forester use?

Factory hardware is M12 × 1.25 studs with 60‑degree tapered (conical) seat nuts. Stick with the tapered seat unless your aftermarket wheels call for a different nut type. Always confirm seat style to ensure proper clamping.

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

Look for cross‑threading, rounded or stretched threads, heavy corrosion, nuts that won’t hold torque, or a stud that spins in the hub. Replace damaged pieces immediately and use a torque wrench for refitment to protect the hub and bearing.