Breaking wheel studs

Dtank wrote:

TucsonJim wrote:
One other possibility that I just thought of. If a shop used a pneumatic gun even once on the lug nuts, they could have fatigued the studs with an over torque situation and they all should be replaced.

Agree with Jim's thoughts - especially the above.

*If* you (or a previous owner) had tires replaced by a tire shop, there's a good possibility an employee used an impact wrench that is/was "supposedly" set to the correct TQ spec - *without* hand TQ.
(Even the factory could be "guilty").

The method is bogus - and the desired spec used may also be suspect.

*If* you know (for sure) this didn't happen - look for other cause/s.

"Fatigued" actually means "stretched".
No way the studs "recover".

Thoughts:
You could replace all the studs - a PITA! -or-
You could repair as breakage occurs - check studs frequently.
Bad karma if more than one stud on a wheel breaks at the same time.

Check for the correct TQ spec for your wheels - via the wheel mfgr.

*ALWAYS* always - watch any/every tire shop employee mounting wheels on any vehicle you own!
Impact wrench is only used to snug the lug nuts. He should then TQ the lugs by hand. Your job to make sure he knows the desired TQ -AND- *watch* carefully!..:W

If his TQ wrench clicks immediately, he's doing more than "snugging" the nuts with the impact!..:(
Call a halt to the installation!

BTW -
High volume tire shops (like Costco) are famous for the above..:(
and -
Tire shop employees may have been working at Taco Bell the previous week..:W

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