question about 2003 ls rims "17

[MrScalia]

I know the lug should match a MarK VIII
but what is the offset ???? some one said +60 mm??? is that right. and are they 7" or 7.5"
I realy need to know (before bidding on them on e-bay) the selled doesn't know ....
How do you mesure offset? I mite go to a dealship and check out on a car on the lot

 

[GrayGhost1]

Those are 17" x 7.5" rims with 60mm of offset.