fatdog

my box shakes when traveling about 60 but if i load my atv in the back it rides like a dream, could my shocks be bad or tires. so theres a vibration unloaded at 60 mph then loaded no vibration. what is the problem. thought it was my tires but not sure now.

NVR2LO

my fx4 does this too, but the roads here are ****, so i think that has something to do with it.

PJB

I think its normal on these trucks.

GATORB8

Mine doesn't rattle at all. May want to make sure all the bed to frame mounts are still tight.

SinCityFX4

No rattle or shakin on my FX4 Screw....

fatdog

my dads 08 150 doesnt shake at all. what did they use different to correct this. i have a spray in liner in the box so its going to be difficult to check the bed bolts.

redrider911

my 06 shakes bad as well. Bolts are tight.

06fordf150

my 06 shakes without any load in it also i think it is supposed to be like that because theese trucks have such a rigid frame and suspension i think and i could be wrong that my bed is actually mounted on some sort of bushing for this reason!!

farmerbyron

Mine shakes as well. I have just attributed it to the crap *** pirelli tires. Will see if it goes away when I can get some replacements.

PJB

Theyre all tight. Ive checked them before.


I think so too. I think I remember reading that here before.

I thought it was the old tires because the dealer put junk ones on but it didnt go away with new tires.