Mine are 6.5, but I think some of the 15" factory alloys are 6".
It should be stamped on the inside face of the wheel.
Or, maybe a fellow 99 owner will know for sure.
Function before fashion.
'96 Contour SE
"Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998
