Longer wheel lug studs

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  #1  
Old 03-31-10, 04:48 PM
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Longer wheel lug studs

I own a 2001 Jetta GLS, 2.O. I'd like to put on longer lug studs to accomodate some sport wheels I own. Can someone tell me the length of the factory lug stud? I know the diameter (please confirm at 14mm), but require the length to order what I need.
 
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  #2  
Old 03-31-10, 06:18 PM
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You need longer wheel studs?
or longer lug nuts?

Betcha you can contact someone at www.tirerack.com and find out.
 
  #3  
Old 03-31-10, 06:41 PM
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Longer wheel lug studs

I need longer wheel studs. I called tirerack and they requested of me the original length. The Jetta actually belongs to my stepson; access to the vehicle is limited. Anyone know the length or maybe I should call a VW parts dealer if not VW themself?
 
  #4  
Old 03-31-10, 07:09 PM
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longer lugs

Go to your VW dealer and ask to look at a new lug bolt, then measure it. But I think you are asking for trouble on the wheels.
 
  #5  
Old 04-01-10, 07:21 AM
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Longer wheel lug studs

RETIRED WRENCH:

Could you please expound as to why I'm "asking for trouble"?
 
  #6  
Old 04-01-10, 10:07 AM
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You may be asking for trouble because the entire wheel assembly experiences a moment (rotating force) in the axial direction. These assemblies are qualified by design engineers as a unit, and now you're in the process of redesigning it with longer wheel studs. You don't know if the specified clamp force is enough to preclude relative movement in the bolted portion with this added moment. Any movement could easily result in cyclic fatigue cracking of the components, which is disasterous and has serious safety implications.

Additionally, if the wheel sticks out further on the vehicle, the wheel bearings will be loaded more heavily than the original design, drastically reducing the useful life of the bearing.
 
  #7  
Old 04-01-10, 12:10 PM
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Longer wheel lug studs

KESTAS:

Do you feel this way about wheel spacers to accomodate inadequate wheel offset with respect to caliper clearance?
 
  #8  
Old 04-01-10, 01:20 PM
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The same ideas apply with respect to wheel bolt clamp load and bearing load.
 
  #9  
Old 04-01-10, 06:14 PM
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i would not mess with the studs. there is a factory off set specific for each car "group". i do not mess with certain things, wheels and brakes. lmao
 
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