I have a 93 fatboy with a stock rear tire, I would like to put a 150 tire, is there a way to space the drive pulley and offset trans with out drastic changes

 

A 150 should "just " fit without any changes ..take a close look.

 

A buddy of mine just did this yesterday. It will fit. . Just turn those strut support mounting bolts around to give yourself the extra clearance in the fender well and put a cap nut on the outside. Do this with the rim off so you can get your torx bit inside the fender. It's tight but it'll work.

 

THX for the info, Ill give it a shot.

 

I tryed to put a 150 wide tire and it hits the belt. Is there any suggestions on how to get around this issue. []

 

Pully spacer. Check rear wheel alignment.