I really think these tires have a break-in period and they should quiet down after a few hundred miles .

I am just to much OCD I guess, but I love working on this jeep

 

I'm running 33s on 16s KM2s and have never felt any such vibration at any speeds.

 

I have the same tires on 17 inch stock rims and feel the same vibration around 65 and then 73. 3000 miles on them, 5,000 on the jeep.

 

I've got 285/76/16 KM2 and get the same vibes at the exact same speed. Must be a characteristic of the tire.
Tried rebalancing and did nothing except waste $'s.

 

I have km2 tires, love them, slight tire hum , that's about it. I had a 92 f250 with 39.5 super swamper boggers on it ,could hardly here the radio. Km2s feel like regular tires after half a dozen sets of boggers as it was my only truck. Love my km2s , now with 20k miles, still ride great with very little wheel weights.

 

I have 35" KM2's on AEV rims, I currently have a vibe in a fairly narrow range of about 64-66 mph, but it only appeared after I did my latest 5-tire rotation (I now have 30k miles on them). It's about time for another rotation, and I'm thinking the vibe will change or be reduced. I think once Mud Terrain tire treads get down into the less than 50% of original tread depth range, things can start to be a little uneven, vibratory, call it what you will.

 

Thanks everyone Sounds like this is a standard Mud terrain thing