what tire clearance should I have?

Hi all,
what should be my minimum clearance between the tire sidewall and the frame of the trailer? I am using a Tractor supply trailer with leaf springs.
I found a set of 14x 6 inch rims that would replace my 12 in wheels on my trailer but fear that the tire sidewall would be very close to the frame.
I realize that torsion axles are different and their specs dont apply here.
I have leaf springs.
A search of the site has left me confused as hell.
whatcha think?
thanks all!
Walter
what should be my minimum clearance between the tire sidewall and the frame of the trailer? I am using a Tractor supply trailer with leaf springs.
I found a set of 14x 6 inch rims that would replace my 12 in wheels on my trailer but fear that the tire sidewall would be very close to the frame.
I realize that torsion axles are different and their specs dont apply here.
I have leaf springs.
A search of the site has left me confused as hell.
whatcha think?
thanks all!
Walter