Parts for your 2014 Toyota Bb-Wheel hubs

2014 Toyota bB wheel hubs: what they do and how to look after them

Based on technical references including Toyota’s Electronic Parts Catalogue (EPC) for the 2014 bB (QNC2# series), the Toyota Repair Manual (Chassis – Axle/Hub sections), and Toyota New Car Features (NCF), this vehicle is fitted with wheel hub sub‑assemblies front and rear. These are integrated hub and bearing units, with ABS encoder rings where equipped. So yes—wheel hubs are absolutely relevant and used on the 2014 Toyota bB.

On the bB, the wheel hub is the bit that the wheel bolts onto with the studs and nuts. Inside the hub is a sealed bearing that lets the wheel spin smoothly while carrying the weight of the car. Up front, the hub also supports the CV shaft and keeps the ABS sensor reading cleanly. Down the back, the hub unit does the same job and, on drum-brake variants, forms part of the drum assembly. Because these bearings are sealed, they’re maintenance-free—no greasing or adjustment—so the focus is on inspection and timely replacement if they wear.

What owners can expect over the life of the vehicle:

• Typical lifespan can be very long (well over 100,000 km), but rough roads, heavy loads, and water ingress can shorten it.
• Common symptoms of a failing hub/bearing include a humming or growling that rises with speed, a change in noise when turning, ABS warning lights, warmth around the hub after a drive, or free play when rocking the wheel at 12 and 6 o’clock.

Servicing tips for the 2014 Toyota bB wheel hubs:

• There’s no scheduled lubrication—just inspect at service intervals. Spin and listen, check for play, and look for damaged studs or leaking seals.
• If noise or play is present, replace the entire hub sub‑assembly. On the bB it’s an integrated unit, pressing in a separate bearing generally isn’t specified in Toyota’s manual.
• Use quality OE or reputable aftermarket hubs matched to your ABS type (magnetic encoder vs toothed ring) and the correct 4x100 PCD and offset requirements.
• During replacement, protect the ABS sensor, clean the mating surfaces, use new single‑use hardware (axle nut, cotter pins, hub bolts if specified), and torque everything to the Toyota Repair Manual specs. Avoid hammering on the hub, it can damage the bearing.
• After fitting, road test for noise, clear ABS faults if any, and re-check wheel nut torque after a short drive.

For Aussie and Kiwi conditions—coastal air and winter road grime—keeping the hub faces clean when rotating tyres, avoiding kerb strikes, and washing brake dust and salt off regularly all help the hubs live a long, quiet life. If replacement’s needed, it’s typically a straightforward bolt-off/bolt-on job for a pro, and usually 1–2 hours per corner depending on corrosion and access.

Is a humming noise at highway speeds a sign the 2014 Toyota bB hub’s gone?

Often, yes. A worn hub bearing makes a steady hum or growl that changes with speed and can shift when gently weaving the car. Tyre roar can sound similar, so rotate tyres front to back first. If the noise stays with the corner, or there’s play at 12 and 6 o’clock, the hub is likely due.

Can the bearing be pressed in, or does the whole hub need replacing on a 2014 bB?

For this model, Toyota documents hub-and-bearing units. The standard repair is to replace the hub sub‑assembly rather than pressing a separate bearing. That avoids press damage and ensures correct preload and ABS encoder compatibility.

What else should be replaced with a hub on a 2014 bB?

Plan on a new axle nut (front), any specified single‑use bolts, and a fresh cotter pin where used. Inspect wheel studs and replace any that are stretched or damaged. Follow Toyota torque specs, protect the ABS sensor, and you generally won’t need an alignment unless strut or suspension bolts are disturbed.