i need a spair on my trailer, but not sure what the bolt pattern is it is a 5 lug.i know that a toyota is 6 on 5 1/2 but not sure what that realy means except that its 6 lug.how do i get the pattern for my trailer so i can go to the right junk yard to get a spair? or what car / truck has the same rim as a 5 lug trailer? thanx