happened to my old Z250. happens 80kmh and below

there could be many possible reasons.

cone bearing, wheel bearing, balancing, wheel bent, uneven tire wear etc. hell, could even be the tire itself isnt balanced well from factory.

in my case, i suspect its the tire. didnt have it with the previous tire. once i changed tire, i started having that issue after awhile. i even re-sent for balancing but it was perfect.

i even changed my cone bearing (which was worn anyway). and it still remained.

didt manage to try with new tire as i traded in the bike before i could do that.

mostly due to front tyre.