I would also double-check the tire to make sure it is seated properly along the rim. I upgraded my tires to 120 tpi Vee8 tires and they are very soft/flimsy and sometime seat in the Radrover rim at different levels. I have to let air out and adjust if I air up from a flat. I have 3
Rad Power Bikes and pretty much 1/4 -1/3 of the spokes where loose and needed to be torqued to the same level (two 2016 Radrovers, one Radcity step-thru).
I would turn the bike upside down to see how much it wobbles or if you see the tire out of round while spinning. Another thing to check on is to see if the wobble is also with the disc brake:
- disk brake wobble: maybe a out of true spoke issue
- no disk brake wobble: tire issue not seated properly along the rim and/or just a jacked up tire
Not a 100% test. I heard a ticking sound with my spokes when I was riding; but, no noise with zero weight on the rear tire. It was from a few of very loose spokes causing the flex/ticking sound when riding. I still have a little side-to-side wobble on my rear tire; but, my brakes don't rub and I don't feel the slight side-to-side wobble when riding up 26 mph on some downhill runs.