When a tire is taken off of a vehicle to change it, the lug nuts are unfastened from the wheel studs. The wheel studs make it easier to mount a tire because they hold the tire in place instead of demanding a person to line up the holes and insert a bolt.
Wheel studs come in two types:
Screw-in and press-in studs
Screw-in studs are bolted into a threaded hole in the vehicle hub.
Press-in studs are fixed from the back of the hub with the larger section splined so that it does not revolve. When a wheel stud breaks or is spoiled, the stability of the tire is compromised. If more than one stud breaks, it can cause the tire to vibrate and make steering and driving difficult and unsafe.
SEE ALSO:WHAT IS WHEEL BEARINGS REPLACEMENT
Facts to Note:
Wheel studs can either be damaged or stripped.
Wheel studs that are fixedwrongly can cause the lug nut to fall off.
It is possible to break the wheel studs if the lug nuts are tighten up too much, which commonly only happens if a power tool is used.
If the lug nuts are too loose, the wheel can slam back and forth during braking and acceleration, which could also damage the wheel studs.
How to Fix:
The vehicle is raised and held on jack stands and wheel is detached
The hub is detached and defective studs are changed
The hub is reinstalled and tire is reinstalled
The vehicle is removed from the jack stands
The vehicle is road tested for proper operation
The wheel studs and all wheel parts should be checked as a part of regular maintenance and during a tire rotation. In addition, you should check them when you change a flat tire or switch out your tires for any reason. If the wheel studs are damaged or worn, have them changed by one of your expert mechanics to prevent damage to the vehicle.
Common symptoms indicating you may need to change the Wheel Stud:
Stud rotates instead of holding in place
One or more wheel studs is broken off or bent
Threads are warped
SEE ALSO:Toyota Camry 2018 Car Review
Importance of this service:
If the wheel studs break or warp, they will not hold the tire in place, which will cause it to wobble. The tire could fall off or blow out, causing an accident. Wheel studs should be examined as part of regular maintenance, and changed as soon as they are determined to be defective.