Parts for your 2017 Subaru Forester-Wheel bearings

2017 Subaru Forester wheel bearings: purpose, servicing and replacement

Wheel bearings are absolutely used on the 2017 Subaru Forester (SJ series). Subaru’s factory Service Manual for the Forester SJ (Chassis: Wheel and Tyre System – Hub Unit Bearing) specifies sealed hub unit bearings at all four corners, and the Subaru FAST electronic parts catalogue lists complete hub-and-bearing assemblies for both front and rear. These technical sources confirm that the 2017 Forester is built around bolt-in hub units with integrated bearings, not serviceable tapered bearings.

On a 2017subaruforester wheelbearings are there to let each wheel spin freely while carrying the vehicle’s weight and coping with cornering and braking loads. The Forester uses sealed, preloaded hub units that also house the ABS encoder ring. Because they’re sealed, there’s no greasing or adjustment during routine servicing—when one wears out, the unit is replaced as an assembly. That design improves durability and keeps water and grit at bay, a bonus on Aussie and Kiwi roads and tracks.

As part of regular servicing, a mechanic will road test for a low, speed-dependent hum or drone that rises with road speed and often changes slightly when weaving the car. With the wheels off the ground, they’ll check for play at the 12 and 6 o’clock positions and listen for roughness when spinning the wheel by hand. They’ll also scan for ABS faults that can pop up if the bearing’s encoder ring is damaged.

Replacement is straightforward but precise: the brake assembly and axle nut are removed, the old hub unbolts from the knuckle, and the new unit is fitted. Correct torque on the axle nut and hub bolts is critical to bearing life, and corrosion can make removal a bit of a wrestle on high‑kilometre cars. Quality matters—choosing reputable OEM-equivalent hub units helps avoid early noise or play. An alignment isn’t usually required for a hub swap alone, but it’s smart to check tyre wear and steering feel afterwards.

To help bearings live a long life, keep wheel nuts torqued correctly, avoid harsh kerb strikes, and rotate tyres on schedule so noise changes are easier to spot. If a bearing does fail, replacing it promptly prevents collateral damage to the hub, ABS sensor, or brake components and keeps the Forester safe and quiet on the open road.

• Typical signs: droning/humming that follows road speed, vague or wandering steering, ABS light, or play felt at the wheel.
• Service tip: inspect at every service and during tyre rotations, replace the hub unit if any roughness or play is found.
• Parts note: the 2017 Forester uses sealed, non-serviceable hub-and-bearing assemblies front and rear.

Popular questions

How long do wheel bearings last on a 2017 Subaru Forester?

Many owners see 100,000–200,000 kilometres from factory bearings, but life varies with road conditions, wheel impacts, oversized tyres, and water crossings. If you tour corrugated roads or tackle frequent creek fords, expect shorter intervals and keep an ear out for early noise.

Regular checks during scheduled services help catch a tired bearing before it becomes a safety issue or starts chewing out tyres.

What are the classic symptoms of a failing Forester wheel bearing?

A steady hum or growl that gets louder with speed and may change when gently weaving is the giveaway. You might also notice faint vibration through the floor, vague steering, or an ABS light if the encoder ring is affected.

Tyre roar can sound similar—rotating the tyres to see if the noise moves is a handy test. A mechanic can confirm by checking for play and roughness with the wheel off the ground.

Can the 2017 Forester’s wheel bearings be greased or adjusted?

No. They are sealed hub unit bearings with a set preload from the factory. There’s no servicing or repacking—once noisy or loose, the whole hub-and-bearing assembly is replaced.

Good installation practices—clean mounting faces, correct torque on the axle nut, and quality parts—are the key to long, quiet service.