ford i think why do you ask if its to do with new rims go combination pattern
snap
A quick method on a five stud hub is to measure across two studs. #Early Holden will be close to 4 inch, Ford will be close to 4.25 inch, HQ holden will be close to 4.5 inch (commodore are very close to HQ but not exact). #This will work most of the time, the only trouble is with early Valiant which are close to early holden but not a fit. #In any case after purchase of spare always fit to trailer just in case you were sold the wrong size.