I did the same thing with my TRX. Took the TRX wheel off and replaced it with the smaller wheel off the police bikes. Same wheel, just smaller.I dislike the lo-pro big wheel look so much I replaced the 19" stocker on my '15 Road Glide with a 17" from a Road King. It rides much better with a little more sidewall and to me LOOKS way better. It is the same tire as the CVO RG.
It made a world off difference. It rides better and turns with less effort.