Anybody know what the size of a factory wheel spacer is that was used on the rear?

I heard 3/8", which is about what I need to bring my wheels back out, but I'm not certain that's what it is.

Thanks for the help fellas,

-Levi

 

Its only about 1/8" and was only used on drum rear cars with 16" wheels. Its basically useless if you ask me.

 

This from the 10-bolt FAQ:

The spacer was apparently used on 16" wheels when GM switched from aluminum to iron drums, which created a .187 size difference. The spacer, however, seems to be hit or miss and essentially unnecessary. Even some disc brake cars received them [mine did].

JamesC

 

Alright, thanks guys, disappointing, but i'll figure it out.

Any idea where I could find, say, a 10-15mm spacer that has the dual lug nut setup like the thicker 1" and up spacers, or are they even necessary for a spacer that thin? If I was go with say a 15mm spacer, would I have to change to longer studs for my front rotors, or could I just use the ones that are on there?

Thanks,

-Levi

 

Those factory spacers were .187 thick and were usless. They were installed so the engineering drawing numbers would be correct and not show that -.187 dim error.

 

so true!
i bought some 91-92 wheels out of the local paper at a deal years ago.
loaded everything up and was going to leave and the guy was chasing me down waving the spacers.
"youll need these spacers or they wont fit."

 

I've always wondered about those lil discs that came on my rear... Never knew they actually came from the factory like that... haha