C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Wheel studs- tread size?

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Old Mar 10, 2007 | 01:22 PM
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Default Wheel studs- tread size?

Removed my rear wheels off the '91 this morning to go get new tires on them, i dont trust the shop with jacking/removing the rims after the last tire guy jacked up my C3 right on the oil pan

Anyway, found one of the wheel nuts to be cross-threaded on removal, lookes like it was impact wrenched on by the previous owner/shop? And these C4 wheel nut seem soft?
The wheel stud is a little chewed up at the end, want to go buy a die on monday to clean up the thread before i refit the wheels,

Anyone know, off hand, what thread size the studs are?

Cheers

Last edited by 77vetteuk; Mar 10, 2007 at 01:56 PM.
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Old Mar 10, 2007 | 03:56 PM
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In Germany we call it M12x1.5

Does that help?
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Old Mar 10, 2007 | 05:15 PM
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Also, the lug nuts have a 60 degree taper on the seats. The Vette lug nuts have the outside threads for the caps but most mid-size and larger GM cars that have alloy wheels use the same thread size.

Getting a Vette lug nut may run $3 per, but the generic GM metric lug nuts or the parts store versions run less than a buck each.
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Old Mar 10, 2007 | 06:48 PM
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Originally Posted by Eike
In Germany we call it M12x1.5

Does that help?
Excellent, just what i was after,

Thanks for your help
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