Parts for your 2014 Mazda Premacy-Wheel hubs

2014 Mazda Premacy (Mazda5) Wheel Hubs — What They Do and When to Service Them

Wheel hubs are absolutely relevant and fitted to the 2014 Mazda Premacy (Mazda5, CR series). Technical sources confirm this: the Mazda Workshop Manual for the CR Premacy/Mazda5 includes procedures for Front Hub/Steering Knuckle and Rear Hub/Unit Bearing removal and installation, Mazda’s Electronic Parts Catalogue (EPC) lists front and rear wheel hub units for the CR Premacy, and major bearing manufacturers’ catalogues (e.g., SKF/NTN) specify complete hub unit bearings for this model. That means the vehicle uses sealed hub assemblies with integrated bearings at each corner.

On the 2014 Premacy, the wheel hub assembly is the solid anchor that the wheel bolts to, while also housing the sealed bearing that lets the wheel spin smoothly. The brake disc mounts to the hub, and the ABS tone ring or encoder is built in, so the wheel speed sensor gets a clean signal. Because the bearings are sealed-for-life, there’s no greasing or adjustment during routine servicing—when a hub’s worn, the complete unit gets replaced.

Typical symptoms of a tired hub include a steady humming or growling that rises with road speed, a faint vibration through the cabin, uneven tyre wear, or an ABS light if the encoder/sensor signal is affected. A quick check for play at the wheel (holding at 12 and 6 o’clock) and listening for rumble while spinning can help pinpoint the culprit. If only one side is noisy, replacing just that side is common practice, though checking the opposite side is wise.

Replacement on this model involves removing the brake caliper and disc, unbolting the hub unit from the knuckle (rear) or sliding it off the axle/knuckle (front, depending on side), and refitting with new hardware where specified. Using a new axle nut, correct torque, and avoiding side-load on the bearing during installation is critical. The ABS sensor and harness should be handled carefully to prevent damage or misalignment with the encoder. An alignment generally isn’t required unless the knuckle or suspension geometry was disturbed, but a post-repair road test and scan for ABS faults is good practice.

To extend hub life, proper wheel nut torque, avoiding kerb strikes, keeping splash shields intact, and addressing any brake drag early all pay off. During service, a quick spin-and-listen check and an inspection for seal damage or corrosion will catch issues before they become a bigger headache.

• Common signs to watch: speed-related hum, ABS warning, heat at the hub, or wheel play
• Best practice: replace as a complete unit, use correct torque, and protect ABS components

Popular questions about 2014 Mazda Premacy wheel hubs

How long do the wheel hubs typically last?
For most owners, hub assemblies will run well past 120,000–180,000 km, depending on road conditions, wheel impacts, and tyre/brake upkeep. Vehicles that frequently hit potholes or carry heavy loads may see earlier wear.

Can the bearing be replaced separately from the hub?
No. The Premacy uses sealed hub unit bearings. When the bearing wears or the encoder is damaged, the complete hub assembly is replaced as one piece.

Do both hubs need replacing if only one is noisy?
Not necessarily. It’s acceptable to replace a single noisy hub, provided the other side checks out with no play or noise. Many technicians will recheck the opposite side at the next service interval.