The hum that gets louder with speed
A low hum or growl that starts at moderate speed and rises as you go faster is one of the most commonly misread noises a vehicle makes. Most drivers assume it is the tires, and sometimes it is. Just as often it is a wheel bearing, and the difference matters, because a worn bearing keeps getting worse.
The two can sound almost identical at a steady speed. A few simple observations help tell them apart before you book.
Does it change when you turn? On a long, gentle curve, a worn bearing usually gets louder or quieter as weight shifts onto or off it. Curving one way and then the other often makes the noise change in one direction and not the other. Tire noise tends to stay much the same.
Does it change with the road surface? Tire noise often changes noticeably between smooth and rough pavement. Bearing noise follows speed more than surface.
Did it start after new tires? Some tread patterns are simply louder, and a noise that appeared the day new tires went on is more likely the tires.
Can you feel it? A bearing that is well worn may come with a faint vibration through the floor or the steering wheel.
None of these is a diagnosis on its own, but together they tell the store where to start.
Why it should not wait
A wheel bearing carries the weight of that corner of the vehicle and lets the wheel turn. As it wears, it gets louder and develops play. Left long enough, a bearing can run hot and fail. A noise that has been getting steadily louder is the one to book soonest.
What else the inspection covers
Shocks and struts, springs, bushings, ball joints and steering parts. Worn suspension also wears tires and upsets alignment, and a vibration rather than a noise is often balancing, both here. The national suspension repair page covers the clunks, pulls and wander that point to worn parts.
Other stores nearby
Osage Beach and Springfield also offer suspension repair in Missouri.
About this store
The Kansas City store runs sixteen services and is managed by Richard Kerber.
See the national suspension repair page for all 34 locations.

