Parts for your 2011 Subaru Forester-Wheel hubs

2011 Subaru Forester wheel hubs — what they do and how to look after them

Yes, wheel hubs are absolutely used on the 2011 Subaru Forester. Technical sources including the Subaru Technical Information System (STIS) 2011 Forester (SH) Service Manual and the Subaru Genuine Parts Catalogue for MY2011 Forester both specify front and rear “hub unit bearings” with integrated wheel studs and ABS tone rings. Those sources confirm the Forester runs sealed, bolt-on hub assemblies at each corner, not serviceable loose bearings.

On a 2011 Forester, the wheel hub unit does a fair bit of heavy lifting. It supports the wheel and tyre, keeps the brake rotor running true, and houses a sealed bearing that lets the wheel spin smoothly. The hub also carries the wheel studs and, importantly, the ABS/vehicle dynamics speed encoder. If a hub’s bearing wears out, the car can hum or rumble with speed, feel a bit vague in corners, and even light the ABS or stability control warning if the encoder signal goes skew-whiff.

Because these are sealed units, there’s no greasing or rebuilding during a service — once a hub’s noisy or loose, it’s replaced as a complete assembly. For a Forester that tows, takes the odd gravel road, or runs larger wheels, it’s smart to keep an ear out and check play at regular services.

• Common signs it’s time: a growling or droning that gets louder with speed, play at 12 and 6 o’clock when the wheel’s jacked up, ABS/traction lights, or uneven tyre wear.
• Quick checks: spin the wheel by hand and listen, hold the spring/strut while spinning for vibration, scan for wheel-speed sensor codes.

Replacement tips for the 2011 Forester wheel hubs:

• Use quality hub units that match the SH Forester spec (5×100 PCD, ABS encoder compatible). Cheap units can upset ABS readings.
• Clean the knuckle’s mating face, a light film of anti-seize helps prevent future corrosion bonding.
• Torque the axle nut and hub bolts to the factory specs with a torque wrench, not just a rattle gun, and fit a new, correct-style axle nut if required. Stake the nut where applicable.
• If the strut-to-knuckle bolts were loosened during the job, consider a wheel alignment check.
• Refit wheels and torque wheel nuts evenly, over-tightening can shorten hub life.

As part of servicing, a quick spin-and-listen test, a wheel play check, and a scan for ABS faults every 10,000 km is a tidy way to catch issues early. Many original Forester hubs last well past 150,000–250,000 km, but hard use, potholes, and water crossings can bring that forward. Replace the side that’s failed, there’s no strict need to do both, though some owners choose to if kilometres and conditions are similar.

Popular questions about 2011 Subaru Forester wheel hubs

Do 2011 Subaru Foresters have wheel hubs at both the front and rear?

They do. The 2011 Forester (SH) uses sealed hub unit bearings on all four corners. The front and rear units are bolt-on assemblies with integrated studs and ABS encoder rings, as outlined in Subaru’s 2011 Forester service manual sections for Front Axle and Rear Axle.

Because they’re sealed, they’re replaced as complete units when worn, rather than serviced with loose bearings. That keeps maintenance simple and ABS readings consistent.

What are the symptoms of a failing 2011 Subaru Forester wheel hub?

Typical symptoms include a humming or droning noise that rises with road speed, a rough feel when spinning the wheel off the ground, slight steering wander, and in some cases an ABS or traction control light if the encoder signal drops out.

A quick check is to lift the car safely, grasp the tyre at 12 and 6 o’clock, and feel for play. Spinning the wheel and touching the spring to feel for vibration is another handy workshop trick.

Should both hubs be replaced together on a 2011 Forester?

Not necessarily. It’s fine to replace only the failed hub. Many owners do the opposite side later if it starts to make noise, especially at higher kilometres where wear rates are similar.

If the vehicle has done big kilometres, tows often, or sees rough roads, replacing hubs in pairs can save downtime, but it isn’t mandatory.