Bubba, a before and after test for you.

Get on to the crown of the road (all roads are slanted to get the rain off) and take your hands off the handle bars momentarily.

Are your handle bars square to the bike, or are they cocked slightly in one direction?

Size? Either stick with the 100/90-19 or do what is called a -1 or -2. You'll get a slight but noticeable improvement in handling by switching to either a 90/90-19 or 80/90-19. Can you squeeze a 110/90-19 in between the forks? Maybe, not every tire is the same installed width, and our rims are honestly too narrow for the oem 100/90.

Narrow rim, coupled with a too low recommended tire pressure, is the reason Savages tend to have front tread cupping. And terrible handling versus running a higher inflation pressure.