The problem is, when the weights are added, the tire is balanced as of that moment. As the tire wears, it can move more and more out of balance, to the point where it needs to be balanced again.
After hearing good things about Dyna Beads from several sources, I decided to give them a try. The beads are inserted into the tire, and are free to move around inside, dynamically balancing the tire. As the tire wears, the beads move inside to compensate for the wear, keeping the tire perfectly balanced.
Their web site claims the following benefits for motorcycle tires:
- Glass smooth ride, every time, all the time.
- Dramatically longer tire life
- No rebalancing
- No spoke or rim weights
- Eliminates tire cupping.
- Easy to install
Sounds good to me. I figured I'd give them a try. So far, I've noticed that the tires are extremely smooth and well-balanced. I haven't had them in long enough to make any claims about tire longevity or resistance to cupping - I'll update this thread as time goes on, however.
1. The beads are inserted through the valve stem, therefore the valve core must be first removed from the stem. To do so, you will need a valve core removal tool. Some valve stem caps, such as this one, have a removal tool built into the end of them - it looks like a little forked piece.
2. Insert the tool into the valve stem and rotate it counter-clockwise to begin unscrewing the valve stem, until air starts escaping.
3. Once air is coming out steadily, remove the tool and wait until the tire goes flat. Don't attempt to remove the entire valve core while there is still air in the tire! It will fire out of the stem like a bullet and fly directly into the darkest, most inaccessible corner of your garage.
4. Once the tire is flat, unscrew the valve core all the way and remove it from the stem.
5. The Dyna-Beads kit comes with an applicator bottle like this:
6. It also comes with the beads themselves. For all Goldwings, the correct size is the 2 oz packet for each tire.
7. Cut the corner of the bead packet and very carefully pour them into the bottle.
8. Cap the bottle and put it aside for the moment.
9. With the valve stem at the 4 o'clock or 8 o'clock position, push the included applicator tube onto the valve stem - I pushed it on as far as I could, as I didn't want the beads escaping anywhere.
10. Connect the bottle to the tube, and begin pouring the beads into the tire. I found that squeezing the bottle does very little, but tapping it with your finger speeds the beads along into the tire. Most of the work is getting the beads out of the bottle - once they hit the tube, they rush straight into the tire.
11. Once the beads are in the tire, reinsert and tighten the valve core.
12. Fill the tire with air normally. That's it, you're done!
A couple of caveats:
- If the tire was put on with gooey bead lubricant, or "tire slime" or other gooey wet substance has been put into the tire, Dyna Beads won't work - they have to be free to roll around inside the tire.
- When checking the tire pressure, put the valve stem at the 4 or 7 o'clock position, give it a quick blast of air from a tire chuck, then check the pressure. This clears any Dyna Beads that may have stuck inside the valve stem. Otherwise, they could get blown up past the valve core, and stick it open. Dyna-Beads makes a special valve stem filter to keep this from happening, but I figured I was more than capable of working without it.
That's it! If you give Dyna Beads a try, post your experiences as well!
Update, Feb 2013:
I have modified my installation technique, as I figured out a better, faster way of doing it. Here's a video showing my technique: