I have 26inch rims with low profile tires, 305/40 i think. Have had them balanced but still get vibration at 70 mph. came accross balancing beads but the websight said there not really designed for lower profile tires. Has anyone had any experience with them?

 

have the same problem with the factory size tires on 17" rims balancing beads helped but still get a vibration but now it is like a harmonics type vibration.. basically just changed the vibration, wierd part is it comes and goes sometimes no vibration sometimes have to slow down and then speed backup cause it is so bad I have had mine rebalanced several times before trying the beads. Must have a bad wheel is my thoughts or broken belt in the tire..