[Boomer Mikey]

I've experienced harmonics problems with concrete slab highways in the San Francisco bay area in several trucks and suv's including our Tundra; however, Ive never experienced the twisting bed harmonics I've seen in our Tundra in any other truck. In discussions with our dealer's staff they recommended using tire pressures posted on the door pillar, not increasing tire pressures to the maximum pressure listed on the tire and the addition of some extra weight over the rear axle. I thought this was a bunch hooey until I hauled some stuff for a friend and found the bed harmonics gone. I run around with a 300 pound sheet of scrap aluminum in the bed of our crewmax and haven't experienced bed harmonics since.