Tag Archives: wheel bearing

Replacing sway bar bushings is one of the easier front-end repairs, and it is well within the abilities of a home mechanic with basic tools. The job takes an hour or two, and the parts cost under fifty dollars. The main challenge is access, because the bushings sit on the subframe and the clamps can be rusted tight on older cars.

A squeaking sway bar bushing can be quieted with the right lubricant, but using the wrong grease makes the problem worse. Petroleum-based sprays degrade rubber, silicone grease dries slowly and lasts, and polyurethane bushings need their own special lube. Knowing which product to use on which bushing saves money and prevents the squeak from coming back in a week.

Most drivers think the sway bar only matters in corners, and worn bushings seem like a minor nuisance. But the sway bar is a key safety component that keeps the car flat in emergency maneuvers, and worn bushings let it work less effectively. The result is more body roll, slower cornering response and a vague feel that the driver notices but cannot explain.

A squeaking or creaking front end on the first cold morning of winter is a familiar sound to many drivers. The noise comes from the sway bar bushings, which harden in low temperatures and lose their flexibility. Once the car warms up, the rubber softens and the noise fades. It is annoying but usually not dangerous, and a simple fix makes it go away for the season.

A clunk from the front over bumps can come from either the sway bar bushings or the sway bar links, and the two are often confused. The bushings hold the bar to the frame, while the links connect the bar to the control arm. Both wear at similar mileage, but they produce slightly different noises, and telling them apart prevents replacing the wrong part.

When the factory sway bar bushings wear out, the replacement options range from cheap rubber to upgraded polyurethane and even full bar upgrades. The question is whether spending more on poly bushings or a thicker sway bar makes a noticeable difference, or whether the basic rubber replacement is good enough. The answer depends on the car and how it is driven.

A humming or growling noise from the front that changes pitch when you turn the steering wheel is the classic sign of a worn wheel bearing. The left-right turn test is the oldest trick in the book for isolating which side is bad, and it works because turning shifts the vehicle weight from one side to the other. Mastering this test saves a trip to the shop and pinpoints the exact corner that needs service.

A worn wheel bearing does not fail suddenly. It makes noise, develops play and runs hot for thousands of miles before it finally lets go. Catching the symptoms early prevents a sudden failure on the highway, which can be dangerous. The five key signs below help identify a bad bearing before it leaves you stranded.

When a wheel bearing fails, the parts counter offers two choices: a complete hub assembly, or just the bearing itself. The choice depends on the age of the car and the type of suspension. Modern front-wheel-drive cars use sealed hub assemblies that come as one unit, while older rear-wheel-drive cars use pressed bearings that can be replaced separately. Getting the right part saves money and avoids a comeback.