Parts for your 1999 Subaru Forester-Wheel hubs

1999 Subaru Forester wheel hubs: what they do and how to look after them

Wheel hubs are absolutely used on the 1999 Subaru Forester (SF series). This is confirmed in the Subaru Factory Service Manual for the 1999 Forester (Front Axle and Rear Axle sections), which details the hub, bearing and axle spline interface, and in Subaru’s OEM parts catalogues (FAST/EPC) that list separate front and rear wheel hub components and studs for this model. Reputable service manuals covering the SF Forester also outline hub and bearing removal, press-fit procedures and axle nut torque requirements, further verifying the fitment.

On this Forester, each wheel hub is the sturdy, splined flange the wheel bolts onto. It sits inside a double‑row sealed bearing that’s pressed into the steering knuckle (front) or rear housing. The driveshaft passes through the hub and locks in with a large axle nut. Together, the hub and bearing let the wheel spin true, keep the tyre running smooth, and carry the car’s weight through every pothole and corrugation Aussie and Kiwi roads can throw at it.

These hubs are low‑maintenance by design, but they do live a hard life. If the bearing inside the knuckle starts to go, it’ll often present as a droning or humming that gets louder with speed, a faint rumble when cornering, or play you can feel by rocking the wheel at the 12 and 6 o’clock positions. Left too long, it can chew out the hub or affect ABS readings.

When servicing a 1999 Forester, good workshops will check hub condition and bearing smoothness any time the wheels are off. If replacement’s on the cards, following factory procedure matters:

• Press the bearing in and out squarely, supporting the correct race so load isn’t driven through the balls.
• Inspect the hub journal and flange run‑out, replace the hub if scored, pitted, or out of spec, and renew the seal.
• Clean mating faces, seat the driveshaft splines properly, and tighten the axle nut to the Subaru FSM torque (don’t rattle‑gun it). Correct torque protects the new bearing from early failure.

Quality bearings and hubs last for years of commuting, touring and the odd gravel detour. Regular checks during tyre rotations or brake work, plus proper torque and fitment, will keep this Forester rolling quietly for many more kilometres.

Popular questions

How do you know a 1999 Forester wheel hub or bearing is worn?
Common signs are a speed‑dependent hum or growl, a faint grind when turning, warmth at the hub after a drive, or detectable play when the wheel is rocked top to bottom. Uneven tyre wear and ABS light flickers can also point to hub/bearing issues.

Do you need to replace the hub when changing the bearing?
Not always. The 1999 Forester typically uses a separate hub and press‑fit bearing. If the hub’s journal is clean and within spec and the flange isn’t warped, it can be reused. If there’s pitting, scoring, or run‑out beyond spec, replace the hub with the bearing and seal.

What torque should the axle nut be tightened to?
Use the torque specified in the Subaru Factory Service Manual for the 1999 Forester. Over‑ or under‑torquing is a fast track to premature bearing failure. Tighten with a calibrated torque wrench, not an impact gun, and stake the nut as per the manual.