I had the same problem on my Pilot Road 3's, great ride but once I hit 140+, bike would start going insane. Balancing issue, instead of taking them back, I took the weights off (heated them with a blow dryer) then pried them off. Had 4 oz of dyna beads laying around, so I put 1oz in the front and 2oz in the rear. No vibrations up to 245 km/h -- that's how fast the bike will go.