It is easy to feed them through before the tire is mounted but once it is mounted it takes a little more finesse with a tube or without.
+1 on the feeding them thru the valve stem. I used a 5.00 engraver from HF. The only problem I had was a bead got stuck on the valve stem, so when I tried to check the air pressure, air came out of the tire. If that happens, try to put some air in before checking, a small blast should work.
I am running them for in the second set of tires and like them more now. I also dont like the wheel weights.
here ya go jessie http://www.dynabeads.net/index.php?pr=Motorcycle_Chart
i got a piece of flex hose (like gas line) that fit over the valve and a large syringe from my pharmacist that also fit the hose put the beads in the syringe and feed into the tire if it gets blocked all you have to do is work the syringe in and out to get the blockage out. worked geat and easy.