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

Lug nut size?

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Old Dec 29, 2001 | 12:06 PM
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Default Lug nut size?

What size are the wheel lug nuts.
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Old Dec 29, 2001 | 12:11 PM
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Default Re: Lug nut size? (tsquare)

3/4" rings a bell.
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Old Dec 29, 2001 | 01:07 PM
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Default Re: Lug nut size? (scorp508)

19 or 21 mm... can't remember for sure...
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Old Dec 30, 2001 | 04:30 AM
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Default Re: Lug nut size? (bogus)

19 or 21 mm... can't remember for sure...
Should be 3/4th.. :confused: :confused:
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Old Dec 30, 2001 | 11:25 AM
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Default Re: Lug nut size? (Glock'94)

19 or 21 mm... can't remember for sure...

Should be 3/4th.. :confused: :confused:
This day and age, most are metric, I was thinking 20mm myself, but don't know.
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Old Dec 30, 2001 | 01:24 PM
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Default Re: Lug nut size? (tsquare)

:lol: I was thinking 18mm

I'll out to the garage and look it up in my service manual.

Edit: OK, the manual was no direct help. It just gives a generic description on how to determine the size. Metric lugs will have an M then a couple numbers.

The example they give is: M12 x 1.5

Which means Metric, 12mm size with 1.5mm thread.

I don't feel like removing my wheel cap ('89) to check the size. Sorry - it's cold in the garage!


[Modified by Scoob, 12:30 PM 12/30/2001]
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Old Dec 30, 2001 | 01:33 PM
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Default Re: Lug nut size? (Mr Mojo)

you see, the lugs are either 19 or 21mm... those are the only 2 sizes they can be...

I have a socket that is reversable for lugs... and one side is 19, the other 21.

19 is common on smaller cars and imports, 21 on larger cars...

thats why I think, with reflection, that these aer 21mm lugs
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Old Dec 30, 2001 | 01:38 PM
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Default

All I can say is that I use a 3/4" socket, and it works perfect.

3/4" = 19.05 mm
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Old Dec 30, 2001 | 02:52 PM
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Default Re: Lug nut size? (tsquare)

Thanks for the feedback.My buddy got his rims stolen so he is putting his stocks back on and can't find the lugnuts.I was just to lazy to go out in the rain and check the lugnut size myself. :lol:
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