Parts for your 2015 Subaru Xv-Wheel hubs

2015 Subaru XV wheel hubs: what they do and how to look after them

Wheel hubs are absolutely fitted to the 2015 Subaru XV (GP/GP7). Technical sources including Subaru’s Factory Service Manual for the GP/GP7 platform (Chassis/Brake and Suspension sections), the Subaru FAST parts catalogue, and major aftermarket catalogues from Timken, SKF, NTN and NSK all list front and rear unitised wheel hub–bearing assemblies for this model, complete with integrated wheel studs and ABS encoder. So, wheel hubs are very much relevant to the XV’s driveline and braking system.

On the XV, each hub assembly bolts to the steering knuckle (front) or rear knuckle, carries the brake rotor and wheel, and houses a sealed bearing that supports vehicle load while allowing smooth rotation. The front hubs also spline to the CV shafts, the rears do likewise because the XV is AWD. The ABS tone ring or encoder is built into the hub, feeding wheel speed data to stability control and AWD systems. A healthy hub keeps the wheel running true, the brakes behaving predictably, and the cabin quiet on long Kiwi and Aussie drives.

There’s no greasing or adjustment on these sealed units, so servicing focuses on inspection. At routine services (or about every 10,000 km), listen for a steady humming or growl that rises with speed, check for play at the 12 and 6 o’clock positions, and feel for roughness when spinning the wheel off the ground. Keep wheel nut torque to the factory spec (typically around 120 N·m) to avoid distorting the bearing. If an ABS light appears with a wheel-speed fault, the hub’s encoder or sensor may be involved.

When replacement’s due, go for quality hubs from recognised bearing manufacturers. Clean the knuckle face, protect the ABS sensor, and use a new axle nut where specified. Tighten the axle nut and wheel nuts with a torque wrench, not a rattle gun for final torque. Don’t use the hub to “pull” the CV spline through—support the knuckle and press or tap the spline in gently. Usually only the noisy side needs replacing, though high-kilometre XVs that have seen corrugations, water crossings or coastal corrosion may benefit from doing both.

• Tell-tales to watch: speed-related hum, droning in corners, ABS light, uneven tyre wear, heat at the hub, or visible wobble.

Popular questions about 2015 Subaru XV wheel hubs

How can they tell a wheel hub is failing on a 2015 Subaru XV?
A steady humming that gets louder with speed, a rumble that changes when gently weaving, or play when rocking the wheel at 12 and 6 o’clock are classic signs. Heat at the hub after a drive or an ABS warning tied to a wheel-speed sensor can also point to a failing unit.

If in doubt, a road test plus a hands-on check while the vehicle’s safely lifted will usually confirm it.

Does the XV use a complete hub assembly or just a replaceable bearing?
It uses a bolt-in, sealed hub unit with the bearing integrated. There’s no routine repacking or pressing in a separate bearing on-car—the whole hub assembly is replaced as one piece front and rear.

This design improves sealing and consistency, but it means replacement rather than rebuild when wear sets in.

Do they need a wheel alignment after changing a hub?
Normally, no. The hub bolts to the knuckle and doesn’t change alignment. If the strut-to-knuckle bolts or camber hardware are loosened, or if the knuckle is removed, an alignment check is wise afterward.

Given tyre costs and safety, many owners opt for a quick alignment check if any suspension fasteners were disturbed.