Parts for your 2011 Subaru Impreza-Wheel studs nuts

2011 Subaru Impreza wheel studs and nuts

Yes, the 2011 Subaru Impreza uses wheel studs with separate wheel nuts (not wheel bolts). This is confirmed by Subaru’s Factory Service Manual for the GE/GH/GR/GV platform (Wheels/Tyres section) and the Subaru Electronic Parts Catalogue for 2011 models, which list pressed-in M12 x 1.25 studs and matching conical-seat nuts across Impreza, WRX, and WRX STI variants.

On this Impreza, the studs are splined and pressed into the hub or axle flange. The wheel locates on the hub spigot, then the nuts clamp the wheel evenly onto the brake rotor hat. It’s a simple, robust setup that makes changing wheels quick and helps avoid damaging hub threads. Subaru specifies a dry torque for the wheel nuts of about 120 N·m (88.5 ft‑lb) in the service manual—done in a star pattern to seat the wheel squarely. Don’t lube the threads or seats, lubrication changes clamping force and can over-stretch a stud.

Over time, studs can stretch from over-torquing with a rattle gun, or get cross-threaded and gall the threads. Nuts can also distort, especially if mismatched seat styles are used with aftermarket rims. If a nut won’t run on by hand, or a stud spins in the hub, it’s time for replacement. The FSM outlines pressing out damaged studs and drawing in new ones squarely against the flange—no hammering on the hub bearing, thanks. Quality replacement parts and the correct seat profile for your wheels are essential, particularly if your Impreza runs factory alloys versus aftermarket rims.

As part of routine servicing or any tyre rotation on a 2011 Impreza, it’s smart to:

• Hand-start every nut and torque to 120 N·m with a calibrated torque wrench.
• Check that wheel seats match the nuts (typically 60° conical on Subaru). Avoid mixed seat styles.
• Inspect studs and nuts for corrosion, damaged threads, or elongation rings, replace at the first sign of trouble.
• Re-torque after 50–100 km when wheels have been off, especially with new or aftermarket rims.

Following Subaru’s workshop guidance keeps clamping force consistent, protects bearings and rotors, and prevents that heart-stopping wheel wobble. The approach is the same whether your 2011 is a daily-driven Impreza 2.0L on 5×100 hubs or a WRX/STI variant—studs and nuts do the heavy lifting, so treat them right.

What’s the correct wheel nut torque for a 2011 Subaru Impreza?

Subaru specifies approximately 120 N·m (about 88.5 ft‑lb) on clean, dry threads and seats. Tighten in a star pattern and re-check after a short drive, particularly after wheel changes or rotations.

How do you know a stud or nut needs replacing?

If a nut won’t thread on by hand, the stud spins in the hub, threads look torn or rusty, or torque won’t hold, replace the affected parts. Any visible stretch marks on the stud shank or distorted nut seats are red flags.

Can factory nuts be used on aftermarket wheels?

Only if the seat style matches. Most Imprezas use 60° conical seats. If your aftermarket wheels need a different seat (e.g., mag or ball), use the correct nuts. Always keep the 12 x 1.25 thread pitch and ensure adequate thread engagement, consider longer studs if using spacers.