Your bike looks nice!
zipidachimp wrote on 08/22/18 at 22:25:47:Have a couple of spare hubs, may change front/rear both to 18". Any ideas?
Yes......if you change your rear rim to an 18" - don't get a 2.50x18 rim unless you want to run a skinny vintage looking tire. If you want to run meaty tires - be sure to get a 3.50x18 or wider rim.
I believe the "Bobber" look somewhat requires a larger than necessary rear tire......you may not be able to keep the look if you use a tire size that would look correct on a Cafe' or Tracker.
If you go to an 18" front wheel you will likely need to change your front fender to work with the smaller diameter....or at a minimum drill some new holes and lower the front fender. You really only have 2 choices in front tire size 100/90 or 90/90. I use the smaller 90/90 on my bike as it is much lighter, and also drops the front end a little bit more to help lighten up the steering.
Here is the tire thread discussion for Cafe' bikes - some of it is applicable to your bike.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1435340395