When added to the inside of the tire the beads will automatically distribute themselves to counter act the heavy spots when the vehicle is in motion.  This results in a very smooth ride as well as prolonged tire life.There are many ways to install the beads.  The easiest method is to just pour them in during mounting.Please note, you can't use these with a liquid sealer, as they will not be able travel freely inside the tire.Drop us a note and we'll help choose the right size.  You can also see the full tire charts at tyrebeads.com/chartsTHESE ARE NOT GLASS!!!Glass - a much softer material - it will break down and you'll have glass powder in your tires. This powder becomes susceptible to moisture clumping and is a potential hazard to your health when you change your tires.Our ceramic beads are denser than glass - which means you need less of them inside the tire, this helps reduce tire wobbling due to excessive media especially for smaller tires.