Parts for your 2020 Subaru Impreza-Wheel studs nuts

2020 Subaru Impreza wheel studs and nuts

Wheel studs and nuts are absolutely used on the 2020 Subaru Impreza. Subaru’s factory Service Manual (front/rear axle and hub sections) depicts press-in wheel studs with separate lug nuts, and the 2020 Impreza Owner’s Manual specifies tightening the wheel nuts to 120 N·m (88.5 ft-lb). Subaru’s genuine parts catalogue likewise lists both the wheel stud and wheel nut as serviceable items for this model.

On the 2020 Impreza, the pressed-in studs are mounted to the wheel hub and the wheel is secured with five separate nuts. It’s a simple, reliable setup that makes roadside tyre changes straightforward and lets owners replace a single damaged stud without swapping the whole hub. The nuts clamp the wheel evenly against the hub face, correct torque is crucial for brake rotor alignment, even load distribution, and preventing vibration.

As part of routine servicing or whenever tyres are rotated, it’s worth giving the studs and nuts a quick once-over. Look for damaged or flattened threads, corrosion, burrs, or nuts that don’t spin on by hand. Subaru workshop literature calls for tightening clean, dry threads—no oil or anti-seize—so the torque wrench reads true. If threads are dirty, brush them lightly and blow off debris before refitting the wheel.

• Torque to 120 N·m with a calibrated torque wrench, using a star pattern.
• Re-check torque after 50–100 kilometres if wheels have been off or new wheels/tyres fitted.
• Never “gun” the nuts tight with a rattle gun, use it to snug only, then finish by torque wrench.
• Replace any nut with rounded flats, cracked caps, or damaged threads.

If a stud is stretched, cross-threaded, or snaps, replace it. A press-out/press-in procedure is used: the brake calliper and rotor come off, the damaged stud is driven out from the rear of the hub flange, and a new stud is pulled fully home squarely. In many cases the hub can stay on the car, but space behind the flange can vary—follow the Service Manual for your exact grade. Always draw the new stud in using a suitable spacer stack and a sacrificial wheel nut, not by hammering it in, and confirm the head seats flush. Finish with fresh nuts if there’s any doubt. Treating the wheel studs and nuts with a bit of respect keeps the Impreza’s wheels on straight, the brakes happy, and the drive smooth.

Popular questions

What’s the correct wheel nut torque on a 2020 Subaru Impreza?
Subaru specifies 120 N·m (88.5 ft-lb). Tighten in a star pattern on clean, dry threads and avoid lubricants, which can distort the torque reading. If wheels have just been refitted or rotated, recheck torque after 50–100 kilometres.

How can someone tell a stud or nut needs replacing?
Warning signs include nuts that won’t start by hand, visibly rolled or rusty threads, a stud that spins in the hub, or a nut with rounded flats. Any cross-threading, over-torque, or a snapped stud warrants replacement before the next drive.

Can anti-seize or grease be used on Impreza wheel studs?
It’s not recommended. Subaru service information calls for tightening wheel nuts on clean, dry threads, lubricants change the clamping force at a given torque and can lead to over-tightening. Keep the threads clean and dry for best results.