McGard Wheel Locks for C6
Thread Starter
Melting Slicks
Joined: Nov 2004
Posts: 2,043
Likes: 2
From: Bergen County, NJ Sarasota, FL
McGard Wheel Locks for C6
McGard shows the following wheel locks (M12 x 1.5) for the C6:
Cone Seat Tuner Lock 25257
Cone Seat Lock 24137
Which is the correct one?
What's the difference?
Cone Seat Tuner Lock 25257
Cone Seat Lock 24137
Which is the correct one?
What's the difference?
Safety Car
Joined: Jan 2006
Posts: 4,598
Likes: 78
From: Miami FL
2020 C6 of the Year Finalist - Unmodified
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16,'17,'18-'19-'20-'21-'22
Bugman knows!
According to Bugman
http://81x.com/bugman/c6
you will want the 24137 McGard wheel locks. He has photos to show why.
You might enjoy surfing his site - he has opinions and even if you don't agree, he will give you ideas to think about.
http://81x.com/bugman/c6
you will want the 24137 McGard wheel locks. He has photos to show why.
You might enjoy surfing his site - he has opinions and even if you don't agree, he will give you ideas to think about.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
It is GM part #12497482 made by Mcgard. That's what the dealership ordered for me and installed.
I don't know what those other 2 numbers come up from mcgard unless part numbers change alot.
I don't know what those other 2 numbers come up from mcgard unless part numbers change alot.
Team Owner
Joined: Sep 2000
Posts: 25,009
Likes: 2,707
From: Far NW 'burbs of Chicago
St. Jude Donor '13
The GM wheel locks are indeed made by McGard, and the instructions make that clear. The problem is that if you want to buy a second set of locks with the same key (two cars, first set wore out, etc) then McGard will sell you a complete set with same key if you bought them under the McGard name, but if you bought them under the GM name then you have to order each lock as an individual part. That practically doubles the price. Just found this out a couple of weeks ago when I called McGard.
Also, the McGard instructions brag about how they are weight-matched to the ordinary nuts, but that's a lie. I weighed a lock and a regular nut, the lock is distinctly heavier. Fortunately they are so close to the axle that it has little effect, about equal to 1/2 of those little stick-on weights. If you really want to get precise, put the locks on directly opposite the valve stem, then cut a weight in half and stick it on near the valve stem.
Also, the McGard instructions brag about how they are weight-matched to the ordinary nuts, but that's a lie. I weighed a lock and a regular nut, the lock is distinctly heavier. Fortunately they are so close to the axle that it has little effect, about equal to 1/2 of those little stick-on weights. If you really want to get precise, put the locks on directly opposite the valve stem, then cut a weight in half and stick it on near the valve stem.
