just came back from a test ride on the FJR. New front tire, 1 1/2 oz of the beads, 80mph,no vibration. This is just a initial feeling out, more updates to follow, when the tire gets half way worn. The manufacter says you can add them thru your tire valve, but I have 90degree stem, so had to install during mounting. I have a different type(external) on the motorhome with good results, so i thought I'd give the beads a try.