Originally Posted by 52 F3

This is from measurements taken from an '05 Crown Vic. as close as I could measure.

Track width with stock wheels - 63 1/2
Hub to hub surface - 67 1/2
Outside of tire - 71 1/4

The '02 and earlier which are sometimes used as a complete clip are different.

These measurements are from a '98 Crown Vic.

Track - 63
Hub to Hub - 63 1/4
Overall - 72

These measurements are from my '59 F-100

Track - 63
Hub to Hub - 62 1/2
Overall -69
You didn't state what year you were inquireing about.