verify small bolt pattern ?

Hook your tape to the outside of 1 stud. Skip 1 stud. Measure to the center of the 3rd stud and you will know sor sure. The one in the pic is 5x4.

Yup 5 on 4" in that picture.

The 4" is the bolt circle, so you would have to measure strait across to an invisable circle line between the two lug nuts to get a perfect 4" center too center measurement.