2009 mustang rim fitment on 2003 sport trac

[stang32]

i did some searching & found many posts about the subject but I am not following some info received
i put my old mustang rims on the truck last week to see if the shake in my front end & steering wheel went away & it did. the wheels are stock 16" wheels, from a 2009 base mustang, no idea of offset but they fit the truck fine, granted, I had the stock mustang tires on the wheels at the time, my question is, do I need to use spacers?
are the spacers to clear the mechanics of the rotors, calipers, etc...
or are they so the tires do not rub?will i have an issue when i put the truck tires on these wheels?

 

[01STrunner]

Spacers are mounted on the oem studs. They have nothing to do with clearing the hubs and rotors.

The issue will be with the width of the mustang wheel and the load rating of them. I don't know if they are rated to handle the weight of the ST especially if you were to load the truck up with stuff. The other issue I see is if they are less that 7" wide, they will be too narrow for the tires. Our stock wheels are 16x7s.

 

[ncranchero]

Did the 09 Mustang wheels not sit deep into the fender wells? IIRC there's a large backspacing issue with using late Mustang, or Explorer for that matter, wheels on a Gen 1 Trac.