You are probably aware, but just to be sure:
The lug spacing for 5 lug wheels is from the back edge of one lug to the center of the opposite lug.
For 4, 6, and 8 lug measure center to center.
If this is a commercially built trailer then 5 lug on 4.5" is very common.
The lug spacing for 5 lug wheels is from the back edge of one lug to the center of the opposite lug.
For 4, 6, and 8 lug measure center to center.
If this is a commercially built trailer then 5 lug on 4.5" is very common.