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I, specifically am talking about when my Tundra bounces up and down, from front to back, up and down and up and down so badly that everyone inside the cab is bouncing up and down and up and down. Not too cool to take friends for a ride and have them beg to be let out and then spend the rest of the evening listening to them make jokes and comparisons about how much we were bouncing up and down and up and down. At night you can see the headlights bouncing up and down the road to the point that oncoming drivers are flashing their lights at me.

Originally Posted by Toxarch

We really need to clear something up here.

I keep seeing a lot of references to South California highways and people using the term "bed bounce". The bounce from the California highways (and some other state highways) is a TOTALLY different issue than the "bed bounce". Read the following and then decide if what you have is actually "bed bounce" or if it is the other problem.

The California highway bounce is due to the spacing of the expansion gaps. It makes the whole truck bounce up and down due to the wheel base length. That is why it will go away if you drive slower or faster. Once again, this is NOT the "bed bounce".

When you go over irregular bumps, and your bed bounces from side to side like a paint shaker, but the cab remains mostly still, that is "bed bounce". You barely feel the bed bounce in the truck, but you can see your bed shaking through your mirrors. That is what the article linked in the first post is trying to fix. That fix will almost positively do absolutely nothing for the highway bounce caused by the expansion gaps. However, it could indeed work as a harmonic dampener like the person planned it to and reduce the side-to-side shake of the REAL "bed bounce".

Watch the Ford "Prove It" bed bounce video on YouTube and you will see a very severe case of the Tundra "bed bounce". If your truck is doing anything close to that on your highways, then you have way too many potholes in your highways.