Dumb Question - '03 Lug Nut Size?

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Oct 14, 2004 | 10:14 PM

joemoia

Thread Starter

Melting Slicks

Joined: May 2003

Posts: 3,241

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From: Torrance Ca.

Dumb Question - '03 Lug Nut Size?

I just looked through the owners and service manuals and couldn't find what size are the wheel lug nuts.

TIA

Oct 14, 2004 | 10:18 PM

Patches

Team Owner

Joined: Sep 2001

Posts: 23,283

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From: Lake Elsinore, CA

M12x1.5

Oct 14, 2004 | 10:22 PM

joemoia

Thread Starter

Melting Slicks

Joined: May 2003

Posts: 3,241

Likes: 1

From: Torrance Ca.

Quote:

Originally Posted by Patches

M12x1.5

thanks!

Oct 15, 2004 | 12:49 AM

GrayC5

Race Director

Joined: Nov 2003

Posts: 12,346

Likes: 5

From: Mustang OK

Quote:

Originally Posted by Patches

M12x1.5

Cone seat lugs.

Oct 15, 2004 | 10:58 AM

allanlaw

Le Mans Master

Joined: Sep 1999

Posts: 7,393

Likes: 7

From: Los Angeles CA

Quote:

Originally Posted by joemoia

thanks!

Make sure you get the kind with the "acorn" shape (curved bottom). I like the chromed ones that go for about $1.50 at Kragen or Pep Boys.

Oct 15, 2004 | 02:11 PM

eitspc5

Racer

Joined: May 2003

Posts: 319

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From: Northern CA

I had several replies to a simular post yesterday state they are cone or conicle on the bottom, not curved or rounded.

Oct 15, 2004 | 03:35 PM

tramminc

Melting Slicks

Joined: Aug 2004

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From: boston mass

the only dum question is the one that doesn't get asked

Oct 15, 2004 | 04:17 PM

allanlaw

Le Mans Master

Joined: Sep 1999

Posts: 7,393

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From: Los Angeles CA

Quote:

Originally Posted by eitspc5

I had several replies to a simular post yesterday state they are cone or conicle on the bottom, not curved or rounded.

Cone on the bottom is fine, I used the word "curved" by which I meant the same thing (I think they use the word "acorn" on the package, which gives a good word picture of what is meant). What you don't want is the flat bottom. I am assuming the '03 uses the same shape nut as the '01.

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Oct 15, 2004 | 10:17 PM

GrayC5

Race Director

Joined: Nov 2003

Posts: 12,346

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From: Mustang OK

Quote:

Originally Posted by allanlaw

To my knowledge, all the C5 OEM factory wheels use a cone seat lug. However, some aftermarket wheels may use a shank style or other lug and for these you may want to check with the manufacturer. Also, the McGard line of lugs and locking lugs are some of the nicest that I have found. They are triple chrome plated and come with a lifetime no rust warranty. Here's a link to their site where you will also find an application guide for factory wheels: McGard Automotive

Last edited by GrayC5; Oct 15, 2004 at 10:20 PM.

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