Hey everyone
Been lurking for a awhile, but recently picked up an 09 f250, 5.4, crew cab, long bed. I discovered I have the rear end bounce that seems somewhat common and almost impossible to cure in these trucks. It's been pretty brutal at speeds of 44-48 mph.

Yesterday I filled the bed with my cedar shake siding (I stripped my house for new siding, anyway). I stacked it nice and neat up to the bed rails,totally full. Put 2 pieces of plywood on top and bungeed it down. BOOM! No rear bounce at all at 44-48mph. None, notta, zip. WTF!

I've read of people putting sand bags, extra spare tires and other stuff for extra weight in the bed, going to the dealer or specialty shops. To try and solve the bounce issue. Seemed like not much success. Even trying a tonneau cover didn't fix it for a couple people.

Not sure what I'm gonna do after I go to the dump tomorrow. Lol. It rides awesome now. I just can't believe it, it's not a lot of weight. Maybe the plywood on top is changing the air flow over the truck? But, wouldn't a tonneau cover do the same??

Anyone else have this issue and figure it out?

 

the best solution is to pull a leaf until you get the ride you want, then add an overleaf that will kick in when weight is added.

have you tried adjusting the air pressure in tires based on the load?

less air when empty more air when loaded

 

Dropping my 285's to 36 front and 34 rear helped tremendously with ride quality. I just have to remember to air them back up if I'm making a firewood trip.

 

I haven't played with the tire pressure.....yet. I replaced my shocks a couple weeks ago with rancho 9000s. I have them set on 2. Haven't messed around with those either. Looks like I'll have something to do this weekend.
Thanks

 

So, when you say bounce, are you talking about a hard bounce over bumps or soft "porpoising" over road dips?

 

On a smooth road. Rear end will bounce/hop. Hitting bumps at any speed not 44-48mph it's fine.

 

In that scenario I think tire pressure will make the biggest difference. A setting of 2 on those RS9000's seems pretty low.

 

I have this issue to. Same speed. I've done shocks calipers and it still persists. I'm going to be changing out the bushings so we'll see if that helps. From what I have read it is possibly linked with the driveshaft and rear pinion angle.

 

Find a GOOD tire shop & ask if the do ROAD FORCE BALANCING. If they look at you funny, go elsewhere.

 

About 3 weeks ago I purchased a 2014 F250 6.2l CCSB with 100,000 on the odometer and I found that it has the dreaded bed hop. Unfortunately I had no knowledge of this when I was out looking otherwise I would have been looking for it. None-the-less I'm in this truck now and will be getting new tires soon, of which I'm hoping will help with the problem seeing as though the 35" BFGs are pretty worn, and probably only have about 2 to 3000 miles left on them. I did have the current wheel and tire setup road force balanced, but the hopping is still there.

 

If your tires are anything over 40 psi with no load in the bed, it's going to hop.

 

I can say with 100% confidence that this statement is incorrect. I have a 2016 f250 6.2 4x4 crew cab short bed with BFG KO2's that I keep 50 in the rear and 60 up front and have 0 hop of any kind. I keep the tires at this pressure based on a chalk test for tire wear. What is causing the hop I can't say, but tire pressure it is not, at least not for me.

 

Good stuff, I just picked up a new (to me) 2012 F-250 and have the tires at the recommended pressure on the door jam. Going over RR tracks I thought I was going to get a concussion! :P

 

With variation in years, configurations, and modifications, your mileage may vary. With fresh Bilstein 4600's and 34 psi in the rear, my hop is gone. It's certainly not as smooth as my Mazda, but it's now pretty comparable to my previous lifted Tacoma with 5100's.