Parts for your 2005 Subaru Impreza-Wheel studs nuts

2005 Subaru Impreza wheel studs and nuts — what they do and how to look after them

Yes, the 2005 Subaru Impreza uses wheel studs and nuts. Subaru’s 2005 Impreza service information shows pressed-in wheel studs on the hubs with separate lug nuts securing the wheels, and the Owner’s Manual specifies a wheel nut torque of about 120 N·m (≈ 88.5 ft‑lb). The Subaru parts catalogue for MY2005 Impreza also lists replaceable wheel studs and nuts as service items. References: Subaru Impreza 2005MY Service Manual (Wheels & Tyres / Axle Hub sections), Subaru Owner’s Manual (2005), Subaru Parts Catalogue (wheel stud and nut listings).

On this model, each hub carries five press-in studs (M12 x 1.25 thread), and the wheel is clamped by matching lug nuts. Their whole job is simple but critical: provide the clamping force that keeps the wheel seated firmly against the hub face, so the brakes, suspension and tyres can do their thing without any wobble or vibration.

As part of routine servicing on a 2005 Impreza, it pays to give the wheel studs and nuts a quick once-over. Look for damaged or stretched threads, heavy corrosion, or a stud that spins in the hub when tightening — all signs it’s time to replace. Avoid lubricating the threads or the nut seats unless the manufacturer specifically states otherwise, Subaru’s procedure expects clean, dry threads to hit the correct torque.

• Start nuts by hand to prevent cross‑threading, then tighten in a star pattern.
• Torque to 120 N·m with a calibrated torque wrench, not an impact gun for final tightening.
• After wheel work, re‑torque after 50–100 km to account for any settling.
• Match nut seat type to the wheel (most OEM Impreza wheels use a 60‑degree tapered seat). Don’t mix mag-seat and taper-seat hardware.
• If a stud is broken, replace it promptly. Press the old stud out and the new one in, rear hubs may need the brake rotor off to gain access.

If several nuts are rusty or the chrome shells spin, replace the set so clamping force stays even. Keeping the hub face and wheel mating surfaces clean (no paint, rust scale or anti‑seize between) helps prevent vibrations and keeps torque true. Done right, the studs and nuts will go the distance, whether it’s the daily commute or a spirited Sunday run.

Technical sources: Subaru Impreza 2005MY Service Manual (Wheels & Tyres, Axle/Hub), Subaru Owner’s Manual 2005 (wheel nut torque), Subaru Parts Catalogue (wheel stud and lug nut listings for MY2005 Impreza, incl. WRX/STI variants).

Popular questions about 2005 Subaru Impreza wheel studs and nuts

What’s the correct wheel nut torque for a 2005 Impreza?
Subaru specifies around 120 N·m (about 88.5 ft‑lb) for the 2005 Impreza. Use a torque wrench on clean, dry threads and tighten in a star pattern. Re‑check torque after 50–100 km anytime a wheel has been off.

What thread size and seat type do the nuts use?
The studs are M12 x 1.25. Most OEM 2005 Impreza wheels use a 60‑degree tapered (conical) seat nut. Always match the nut seat to the wheel design, using the wrong seat type can reduce clamping and damage the wheel.

How hard is it to replace a broken wheel stud?
It’s a straightforward press‑in job for a competent home mechanic with basic tools. The caliper and rotor usually come off for access. Press or draw the new stud fully into the hub flange and finish with proper torque on the nuts. If the stud spins in the hub bore, the hub may need replacement.