Compatible 6x139.7 wheel

[the 18th letter]

Looking to upgrade my factory 16’s to 18’s and see a lot of 6x139.7 bolt patterns on eBay but unless it’s a GM rim eBay says it won’t fit my 99SLE. I hat else should I be looking for in terms of size for a compatible rim?

 

[Big Mama]

This came up a while back but I can’t find the thread. Something about the wheel was different. It may have been the center bore but I’m not sure. Hopefully the poster from that will chime in.