02 fxst 130 to 150 rear tire

I have an '02 fxst softail standard with stock rear rim and 130 tire. I picked up a 2004 rear rim and 150 tire on ebay the rim looks identical to mine, however when I installed it with stock caliper and spacers the tire was considerably off center to the left as viewed from the rear. The wide tire kit from H-D has a new brake caliper and spacers which I suppose would correct this problem, but wouldn't you think if the rim is the same it would still be centered no matter how wide the tire is? I was wondering if anyone knew if I pick up a rear caliper from an '03-'05 softail, that came stock with the 150 tire, and bought the spacers, if that would center the tire. Thanks in advance for any input.

I have an 05 standard and put a solid disk on the rear and had to make sure that the rim was 03 and above. The spacers and calipers are different between the 02's and 03' and ups. With the 03 and up spacers you will noticew that the tire will be "more" centered then the old rim. That is why the caliper needs to be changed.

W

Are the calipers the same on all softail models, '03-'05?

Calipers

Yes,

they changed them after 02 and in 06.