Upset with the New Tundra

[wonger]

some may know im a toyota tech but anyways. i test drive the new tundra almost every day but its for short amount of time like 3 miles and its the same test route i take..
the other day i rented a 08 tundra double cab 5.7 TRD 4x2 .. i was on the freeway in my town and man does the bed bounce like no tomorrow. i never expected this from the new tundra.
this is common for every full size truck on this same freeway where their bed bounce aswell. i talked to a few full size chevy owners and they told me theirs does the same thing.. but man is it annoying.. i guess im kinda pissed cuz it hit me by surprise since i drive these everyday lol. putting some weight will help it.. but with the gas prices.. its hard to weight it down lol. the suspension was set up to be loaded and if it wasnt than the tundra would have a saggy rear end like the tacos did

[RONE]

The section of road you and everyone else are experiencing the "bouncing" on has undulations in it that make a resonance frequency in the truck. It's simple harmonics, and any vehicle will do it, just that a vehicle with stiffer springs will "feel" worse.