What a wheel hub does and when it needs replacing
A wheel hub is the metal piece at the center of your wheel that holds the wheel bearing and connects your wheel to the suspension. It spins with your wheel and carries the weight of your vehicle. When a hub fails, your wheel becomes unstable, you'll hear grinding or clicking sounds, and your car may pull to one side when you brake.
You need a new hub when the bearing inside it wears out or the hub itself cracks. This usually happens after 100,000 to 150,000 miles, though it varies by driving conditions and vehicle. A bad hub is not safe to drive on—the wheel can lock up or even separate, so this is a repair to do before the problem gets worse.
Replacing a hub is a job you can do at home if you have basic mechanical skills, the right tools, and a safe way to lift the car. If you're not confident working under a vehicle or don't have a jack and jack stands, a shop is the safer choice. The job typically takes one to three hours per wheel.
Key Takeaways
- A wheel hub holds the bearing and connects your wheel to the suspension; a bad hub causes grinding noises, pulling when braking, or wheel wobble.
- You will need a jack, jack stands, a socket set, a hub puller tool (often rented), and a torque wrench to do the job safely and correctly.
- The basic steps are: lift the car, remove the wheel and brake components, unbolt the old hub, press out the bearing, install the new hub, and reassemble in reverse order.
- Torque specs vary by vehicle—check your owner's manual or repair guide for the exact bolt tightness, because under- or over-tightening causes premature failure.
- If the hub is stuck or the bearing won't press out, or if you don't have a hydraulic press, a shop can complete the job faster and with less risk of damage.
Tools and parts you'll need
Before you start, gather the right equipment. You need a floor jack and at least two jack stands rated for your vehicle's weight—never work under a car supported only by a jack. A socket set with metric and standard sizes, a breaker bar for stuck bolts, and a torque wrench are essential. You'll also need a hub puller (a three-jaw puller that grips the hub and pulls it off the axle) and ideally a hydraulic press to remove and install the bearing inside the hub.
The hub puller can often be rented from an auto parts store for $20 to $50 for a day. A hydraulic press is harder to access at home—if you don't have one, many machine shops or tire shops will press a bearing for $30 to $75. The new hub itself costs $80 to $300 depending on your vehicle, and you may also need new wheel bearing grease, a new axle nut, and possibly new brake pads if you're removing the brake assembly.
Check your vehicle's service manual or a repair guide specific to your make and model before you buy parts. The hub design varies—some are sealed units you replace as one piece, while others require you to press out the old bearing and press in a new one. Knowing which type you have saves time and money.
Removing the old hub step by step
Start by loosening the wheel bolts while the car is still on the ground—they're easier to break free when the wheel isn't spinning. Then lift the car safely with the floor jack, place jack stands under the frame (not the suspension), and lower the car onto the stands. Remove the wheel completely.
Next, remove the brake caliper and rotor so you can access the hub. Unbolt the caliper and hang it with wire so it doesn't dangle on the brake line. Remove the rotor bolts. You may need to remove the brake dust shield as well, depending on your vehicle's design. Take a photo before you remove anything so you remember how it goes back together.
Now unbolt the hub from the steering knuckle or suspension component it's attached to. There are usually three to six bolts around the back of the hub. Use your breaker bar if they're tight. Once the bolts are out, the hub should slide off the axle shaft. If it's stuck, use the hub puller: thread it onto the axle shaft, tighten the center bolt, and it will gradually pull the hub free. Do not hammer on the hub or axle—you'll damage the threads.
Pressing out the bearing and installing the new one
If your hub is a sealed unit (one solid piece), you're done removing—just install the new hub and skip this section. If your hub has a removable bearing, you need to press the old bearing out and the new one in. This requires a hydraulic press or access to one at a shop.
Place the hub in the press with the bearing side facing up. Use a socket or bearing removal tool that contacts only the inner race of the bearing, not the outer race or hub itself. Press slowly until the bearing comes free. Clean the hub bore thoroughly with a cloth and inspect it for cracks or damage. If the hub is cracked, you must replace the entire hub.
Install the new bearing by placing it in the hub bore and pressing it in with a socket that contacts only the outer race. Press slowly and evenly until the bearing seats fully. The bearing should not move or rattle when you're done. If you're unsure about the press procedure, take the hub to a machine shop or tire shop—the cost is low and the risk of damaging an expensive part is eliminated.
Installing the new hub and reassembling
Slide the new hub onto the axle shaft. Align the bolt holes with the steering knuckle or suspension component and thread the bolts by hand first to make sure they're going in straight. Then tighten them in a crisscross pattern (like tightening wheel bolts) to may support even pressure. Use your torque wrench to tighten each bolt to the specification in your owner's manual—this is critical and varies by vehicle.
Reinstall the brake dust shield if you removed it, then the rotor. Bolt the rotor in place and reinstall the brake caliper, tightening its bolts to spec. Reinstall the wheel and tighten the wheel bolts in a crisscross pattern. Lower the car back onto the ground and tighten the wheel bolts again with the torque wrench to the correct spec (usually 80 to 100 foot-pounds for most cars, but check your manual).
Before you drive, pump the brake pedal several times to restore brake pressure, then test the brakes in a safe area at low speed. Listen for any grinding or clicking sounds and feel for pulling or vibration. If everything feels normal, the job is complete. If you hear noise or feel vibration, stop and check that all bolts are tight and the hub is seated properly.
When to call a professional instead
If the hub is severely corroded or stuck and won't come off after reasonable effort with a puller, a shop has air tools and more powerful equipment to remove it without damage. If you don't have access to a hydraulic press and the hub requires bearing replacement, a shop can do the pressing quickly and correctly. If you're uncomfortable working under a lifted vehicle or don't have proper jack stands, a shop is the safer choice—a dropped car or improper support can cause serious injury.
A shop typically charges $200 to $600 in labor per wheel, plus parts, depending on your vehicle and location. If you're replacing both front hubs or multiple wheels, the total cost adds up, but you're paying for safety and a warranty on the work. Many shops will also inspect your suspension and brakes while the wheel is off, which can catch other problems early.
Frequently Asked Questions
How do I know if my wheel hub is bad?
A bad hub usually makes a grinding or clicking sound that gets louder when you turn or accelerate. You may feel the wheel wobble, see the car pull to one side when braking, or notice the wheel is hot to the touch. If you hear these signs, have the hub inspected soon—driving on a failing hub is unsafe.
Can I replace just the bearing inside the hub, or do I have to replace the whole hub?
It depends on your vehicle. Some hubs have a removable bearing you can replace separately, saving money. Others are sealed units where the bearing is pressed in permanently, so you replace the entire hub. Check your repair manual or ask a parts store for your specific vehicle.
What's the difference between a hub and a wheel bearing?
The hub is the metal housing; the wheel bearing is the rolling element inside it that allows the wheel to spin freely. The bearing wears out over time, and when it does, the hub often fails too. Some hubs are designed so you can replace just the bearing, but many require replacing the whole assembly.
Do I need to replace the axle nut when I install a new hub?
Yes, most manufacturers recommend replacing the axle nut (the large nut that holds the hub onto the axle shaft) because it's a locking nut that loses its grip after one use. A new nut costs $10 to $30 and ensures the hub stays find. Reusing an old nut risks the hub coming loose.
How tight should the hub bolts be?
Torque specs vary by vehicle—check your owner's manual or a repair guide for your make and model. Hub bolts are typically 70 to 150 foot-pounds, but over-tightening or under-tightening causes premature failure. Use a torque wrench and tighten in a crisscross pattern to may support even pressure.