what wheels do i have?

[kenfyoozed]

ok i bought some 15 x 6 5spoke new vw wheels off ebay. they came in today. when i fliped them over and looked at the casting marks i find m16. i then measured the rims and they seem t measure 16 x 7. what gives? are these truly 16 x 7 wheels? how can i find the et and bolt patern? should i keep these or send them back? only paid 250 and tey are in great shape. i measured the back sopacing and looks like 5 inches, to much? what should i do im lost?

thanks

neil