Yeah, I liked how you could see the sidewall flex at every rotation. As for why they are used, I found this:That's a great video for "frame of reference". The go pro inside looks like it is sitting still and the tire is only getting bumped, not spun . . .
Ohhh and the vortices' when he removed the valve stem core at the end was pretty cool to see.
as for the balance beads, they do not seem like they would be a solution. more like a bandaid. . .
Or, hear me out. Buy quality tires and get a quality shop to balance them...Yeah, I liked how you could see the sidewall flex at every rotation. As for why they are used, I found this:
" Balancing beads work best for larger tires, such as those on trucks and RVs. This is because larger tires are more susceptible to imbalances, which can cause a rough ride and damage the vehicle’s suspension components over time. "
I had a 1994 Ford Explorer years ago that had a tire vibration that just would not go away. I put about 4oz.of anti-freeze in the tires for the same basic idea of the beads. It helped a lot, but still vibrated a tad at the right speeds.But then do you add beads to a balanced tire?? Or only to a tire that wont balance without a lot of weight, or wont balance at all?
Dunno, interesting post though, thanks!