I had a new Metzeler Lasertec front tire installed last week in preparation for a couple of long, cross country journeys on my K75S. The new tire cured a slight high speed shimmy, but introduced a small but annoying front end hop.
I suspected a bit of tire unbalance. However, taking the bike back to my dealer for corrective rebalancing was less than convenient. He's some miles away and his service department is very busy. At least half a day would have been involved in the service.
So, I investigated the idea of "dynamic balancing" using a user-applied substance inside the tire. I found a website (www.innovativebalancing.com) advertising a product called Dyna Beads. What I read about the product was encouraging, so I ordered a one-ounce package of the miniscule ceramic beads.
They arrived today - two days after ordered - with an application kit (a little plastic bottle and a tube). The drill is simple: unscrew the valve stem core from the tire to be treated - which deflates it, of course - screw the plastic applicator tube onto the open valve stem, fill the little bottle with the ceramic Dyna Beads and very, very sl-o--o-o-owly pour the beads through the tube and into the tire. Then, re-insert the valve stem core (or, better yet, install a filtered core also sold by the vendor), and re-inflate the tire.
The results are astounding. Frankly, I thought the testimonials on the Innovative Balancing website were wildly hyperbolic, but I was wrong. The front end of my old bike is now rock solid at all speeds. The front tire feels like a racing slick and cornering is now quick and sure to an unprecedented degree. All hint of hop or wobble is gone completely. With this type of balancing, I can't believe the modest Metzeler could be bested by any other tire.
I've just ordered another pack of Dyna Beads for my rear tire and can't wait to pour them in. Wow!