Before it would start shaking at about 65. I was blasting down the road at 90 just now without even a hint of shaking, which is faster than I ever drive this thing anyway.
Money well spent in my book. ($215 shipped to my door. I'm sure I could have had my wheels balanced a bunch of times for that, but with these I won't have to do it ever again)
Installation is simple. Take wheel off, stick balancer on the hub to make sure it clears the calipers. Then stick it inside the wheel and make sure it sits on the mounting flange and doesn't touch the spokes. I have to run 1/4" spacers to clear my wheels so I didn't have any problem with anything rubbing. The kit includes 2 balancers with flat centers and 2 with offset centers plus 2 thin spacers so you can pretty much fit these on anything.


On the negative side I found out I have something leaking out back that I get to fix now


Sorry for the crappy pics. It was dark out and my phone doesn't have the most spectacular camera.