Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
I am looking into doing the same but with a Switchback wheel...The only issue that concerns me is going form a 21" down to an 18" wheel...I already have a few clearance issues and the overall wheel/tyre height is about 1.5" difference..I could put 2" over fork tubes in but thats more expense...
It'll just be a Fat Bob.
An about the skinny front tire being a crack chaser, I just replaced my tires, went with Metzler 880's. No more crack chasing.
At least not cracks in the road. LMAO
As mentioned above, if the tire following grooves is the only concern, get rid of the Dunlop 21", try the Metz or Michelin Commander II, a vast improvement over the dunlops.