Parts for your 2009 Mazda Premacy-Wheel hubs

2009 Mazda Premacy wheel hubs: what they do and when to service them

Based on technical sources, wheel hubs are absolutely relevant to the 2009 Mazda Premacy. The Mazda Premacy (Mazda5, CR series) Workshop Manual for the 2005–2010 platform specifies a pressed front hub mated to a double-row bearing in the steering knuckle, and a bolt-on rear hub unit with an integrated bearing and ABS tone ring. Mazda’s Electronic Parts Catalogue lists front hubs, front bearings and complete rear hub/bearing assemblies for this model, and major bearing catalogues from OE suppliers note matching hub/bearing part numbers. So yes—this vehicle is fitted with wheel hubs at both ends.

On a 2009 Mazda Premacy, the wheel hubs are the sturdy centre point the wheels bolt to. They carry the vehicle’s weight through the bearings, provide the mounting face for the brake rotors, and spin smoothly so the tyres track true. The studs are part of the hub, and the rear hub units house the ABS tone ring so the stability and traction systems can read wheel speed accurately. They’re not flashy, but they’re critical to safe, quiet motoring.

For routine servicing of your 2009-mazda-premacy wheel-hubs, think checks rather than lubrication—the bearings are sealed-for-life. A quick spin test, listening for rumbling, and a shake at 12 and 6 o’clock to feel for play are the go-to checks at service time. Any grumble, roughness or detectable looseness means it’s time to plan a replacement.

• Common signs they’re due: a humming or growl that rises with speed, a droning that changes when swerving gently left/right, ABS/DSC warnings, heat at the hub after a drive, or uneven tyre wear that isn’t alignment-related.
• Front vs rear: The front uses a pressed-in bearing with a separate hub, the rear is a bolt-on hub/bearing unit. Rear replacement is generally quicker, front requires a press and careful setup.
• Best practice when replacing: use quality parts, renew any single-use fasteners, torque the axle nut and hub bolts to factory spec, and keep the ABS sensor/tone ring clean and undamaged.

A wheel alignment usually isn’t needed for hub work, but if suspension components are disturbed, get one. After a few short drives, recheck wheel-nut torque and listen for any new noises. Many Premacy hubs last well past 120,000–180,000 km, but life varies with road conditions, wheel impacts and tyre choices. If you’re unsure, a quick road test and on-hoist check by a trusted workshop will sort it.

FAQs

Does the 2009 Premacy use bolt-in hub assemblies or separate bearings?
Up front it uses a separate hub pressed into a double-row bearing seated in the steering knuckle. At the rear it uses a bolt-on hub/bearing assembly with an integrated ABS tone ring, secured to the trailing arm with multiple bolts.

How long do wheel hubs and bearings typically last on a Premacy?
It varies with roads and driving, but many see 120,000–180,000 km or more. Frequent potholes, oversized wheels/tyres and water intrusion can shorten life. Noise, play or ABS faults are the usual prompts to replace.

Do I need a wheel alignment after replacing a hub?
Not usually. Hub replacement doesn’t change alignment angles. If control arms, struts or tie-rods are loosened during the job, or if there was prior uneven wear, an alignment check is a smart idea.