i think its got a rim issue, i pulled all the tires off the truck after work today, found out i could make it to the local tire shop and did, they rebalanced all 4, the one with all that weight was the worst one, ive still got a slight vibration at 55, its a little worse at 65, didnt go any faster than that. kinda ticked, i really like the look of these wheels, but i may very well transfer these tires over to my factory "deer-paw" alloys and toss the D-windows. guess i'll drive on them a few days and see how i feel about it....