Parts for your 2018 Mitsubishi Asx-Wheel bearings

2018 Mitsubishi ASX wheel bearings

Technical sources confirm wheel bearings are absolutely fitted and relevant on the 2018 Mitsubishi ASX. The Mitsubishi Motors factory workshop manual covers front and rear hub-and-bearing assemblies, the Mitsubishi ASA/genuine parts catalogue lists complete hub units with integrated bearings and ABS encoders for this model, and major bearing manufacturers’ catalogues (e.g., NTN/NSK/SKF) publish matching hub assemblies for the ASX/Outlander Sport platform.

The 2018 ASX runs sealed, bolt-on hub-and-bearing units at each wheel. Their job is simple but critical: carry the vehicle’s weight, keep the hub perfectly centred, and let the wheel spin smoothly with minimal friction. They also house the ABS/ASC encoder, so a worn bearing can affect braking stability control as well as ride quality.

Because they’re sealed, there’s no re-greasing, maintenance is about inspection and prevention. At each service, a tech should road-test for rumble or drone that changes with speed, check for play with the wheel lifted, and spin for roughness. Tyre and brake checks are a great time to look for rusty staining around the hub face or heat marks that hint at internal wear.

Replacement is straightforward workshop work but precision matters. The job typically involves removing the caliper and rotor, undoing the axle nut (front), and unbolting the hub from the knuckle. Correct refit is all about cleanliness, correct orientation of the ABS encoder, and tightening fasteners to factory torque specs. New axle nuts and hub bolts are recommended where specified. After replacement, a short road test and an ABS scan check are smart practice.

Driving habits and road conditions decide bearing life. Good tyres, proper wheel alignment, correctly torqued wheel nuts, and avoiding hard kerb knocks will help them last well past 150,000 km. If one side fails from age or water ingress, it’s fine to replace just that hub, if failure follows an impact or there’s similar wear noise on the other side, doing both fronts or both rears can save a second visit.

• Common signs: humming or growling that rises with speed, ABS/ASC warning after a bump, uneven tyre wear, or detectable play at 12-and-6 o’clock.
• Service tip: rule out tyre noise and wheel balance first, rotate tyres to confirm the noise moves before calling a bearing.
• Aftercare: recheck wheel-nut torque after 100–200 km and keep an ear out for any new noises.

FAQs

How long do wheel bearings last on a 2018 Mitsubishi ASX?
In normal Aussie and Kiwi driving, many ASX hub bearings see 120,000–200,000 km or more. Rough roads, frequent water crossings, oversized wheels, or under-torqued wheel nuts can shorten that. Regular inspections during scheduled services help catch wear early.

What are the tell-tale symptoms of a failing ASX wheel bearing?
Think a steady hum or growl that gets louder with speed, sometimes changing when loading the car slightly left or right. There may be a faint vibration through the cabin, minor steering wander, or an ABS/ASC warning if the encoder signal degrades. With the wheel lifted, roughness or play is a giveaway.

Do both wheel bearings need replacing at the same time?
Not always. If one hub has simply worn out with age, replacing the noisy side is fine. If there’s accident damage, severe contamination, or similar noise building on the opposite corner, doing both on that axle can be cost‑effective and keep the car off the hoist twice.