Parts for your 2015 Subaru Exiga-Wheel studs nuts

2015 Subaru Exiga wheel studs and nuts – purpose, care and when to replace

Wheel studs and nuts are absolutely relevant on the 2015 Subaru Exiga. Subaru’s own technical literature confirms this fitment: the Exiga Owner’s Manual for the model year specifies tightening torque for wheel nuts (typically 120 N·m), the Subaru Service Manual (Exiga YA series) details the hub “stud bolt” and nut arrangement front and rear, and the Subaru electronic parts catalogue (FAST/EPC) lists individual wheel studs and wheel nuts for the Exiga. In short, this model uses a 5-stud hub with M12 x 1.25 studs and separate wheel nuts—no wheel bolts here.

On this Exiga, the studs are pressed into the wheel hub, and the nuts clamp the wheel to the hub face. It’s a simple, reliable setup that makes wheel changes quick and helps align the wheel accurately. Correct clamping force is everything, so torquing the nuts to the Subaru-stated 120 N·m on clean, dry threads is key. Over-tightening can stretch studs and gall the nuts, under-tightening can allow the wheel to fret against the hub, causing vibration and ovalised holes.

As part of regular servicing or any wheel-off job (tyres, brakes, suspension), it’s smart to give the studs and nuts a once-over. Look for:

• Damaged or rolled threads, rust pitting, or signs of impact from a rattle gun.
• Bulging, cracked, or deformed nuts, and washers (if fitted) that are no longer flat.
• Wheel wobble or a “click” when cornering—often a giveaway of loose or unevenly torqued nuts.

Best practice on a 2015 Exiga is to install the wheel, run the nuts down finger-tight, then torque in a star pattern to 120 N·m. Avoid lubricants or anti-seize on stud threads unless a Subaru bulletin specifically permits it—lubed threads can lead to over-clamping at the same torque setting. After any wheel removal, a re-torque check after 50–100 km is a good habit, especially with new wheels.

If a stud spins in the hub, is bent, or the threads are chewed, replace it—pressed-in studs are inexpensive and straightforward to swap with the hub supported. Always fit quality, matching nuts with the correct seat profile for your wheel (Subaru OE wheels use a 60° conical seat). When corrosion’s present, a light clean of the hub face and wheel mounting face helps prevent run-out and keeps torque consistent. Done right, the Exiga’s stud-and-nut setup delivers years of trouble-free motoring across Aussie and Kiwi roads.

• What is the correct wheel nut torque for a 2015 Subaru Exiga?
  Subaru specifies 120 N·m for wheel nuts on this model. Use a calibrated torque wrench and tighten in a star pattern on clean, dry threads. Re-check after 50–100 km following any wheel-off work.
• Does the 2015 Exiga use wheel bolts or studs and nuts?
  It uses pressed-in wheel studs with separate nuts. This is documented in the Exiga Owner’s Manual, Service Manual (YA series) and Subaru parts catalogue.
• When should wheel studs or nuts be replaced?
  Replace any stud with damaged, stretched, rusty or cross-threaded sections, or if it’s bent or spins in the hub. Replace nuts with damaged seats, swelling, cracks, or rough threads. If in doubt, swap them as a set on the affected corner.