Wobble
 

I have an 08 F150 super cab 4.6L 2wd 6.5 bed. 30,000 miles Traveling down the road I get a shaking or wobble in my butt. Nothing to very little in the steering wheel. Any ideas would help, please.

Balance the rear tires and check them for roundness. Check the drive shaft u-joints.

Also make sure your truck's rear end is centered and your truck isn't crabbing.

Also make sure the e-brake isn't dragging.

Thank you all for the suggestions. My truck only has 30,000 miles on it. It is new to me. Roadie mentions tires out of round, that one strikes me. They are Michelin tires did anyone hear of problems with them? This truck was parked inside all winter long every winter. Until I bought it last year.

You may have flat spots in the tires. Next time you store it for the winter, get some cheap jack stands and jack it up. I do that with both of garage queen trucks.

Now you may need to get your tires re-balanced.

I can't imagine there's any issues with Michelin tires. I'd try road-force balance.

Several other suggestions above are good, especially the e-brake sticking. Mine did and I have zero rust, but the pin that holds the pivot point rusts internally.

I don't store it, the previos owner did. He lived in Florida and had a summer house in Maine.

CK Forker I will have to check the e brake. GLC mentioned that earlier.
I wanna say thanks to all. I am going to try to check all ideas. Thanks again

CK FORKER, what is road - force balance?

Without re-typing everything, just read this:

https://www.discounttire.com/learn/road-force-balancing

Need to find someone local that can road-force balance for me.

Most tire stores can do it.