I have a 2500 4x4 crew short bed and I have been hooked up to a 36ft for the last 4 or 5 days hauling hay, had my tires rotated the day before I started and a bad vibration starts about 55mph and shakes through about 62 or so, took back to the dealer to get them rebalanced and it still shakes bad, it didnt do it before the rotation. Finally finished with the hay and am going to unhook after work to see if it does it unloaded....any ideas?

Its a pretty bad shake that I could live with but it cant be good on the rear end shaking like that, because when loaded on these bumpy, hilly, curvey FM roads I pretty much have to stay between 55 and 65, so it shakes the entire time.

BTW it has 33 12.5 R17 Nitto mud grapplers on it. But all 4 of the balance out.....

after awhile. is what it feels like driving down the road

 

a square tire will still balance. best bet would be to get them road force tested. actual drum comes up against the tire to simulate being on the road and at speed. measures how far out of round the tire is. bad thing with those tires, they are difficult to test with road force due to the size and lugs and almost never round.

 

I was thinking that if they still do it when unloaded im going to put the stock tires back on until winter time then put them on when it gets muddy and i will not have to pull a trailer to much in the winter

thanks for the reply cbrahs

 

there is a possibility of a separated belt in the tire. does it look at all funny on any of them?

 

no sir they check out fine from just looking at them(inside and out), I bought them used from a good friend and rode in his truck all the time, he rotated them when they needed it and never noticed it in his truck before.

 

well cbrahs, finaly got done with hauling the hay and got unhooked. My truck doesnt shake unloaded, im confused as all get out now....

 

check your carrier bearing

 

ok thanks

 

could also be a u joint acting up because of the driveline angle has changed when loaded.

 

that gets my vote also.... If your running heavy loads and squatting the rear end down....

 

it only does it when the trailers empty when loaded it doesnt

 

Inhad that same problem just the union with the drive shaft it is not at the proper angle when you pull they said it makes it a lot worse are you getting any vibration not pulling

 

no...just with trailer on and no load, doesnt do it when nothings on and when trailers loaded

 

I had a fiver flat deck that vibrated sometimes only when empty and transmitted the vibration to the truck.

 

i have just about gave up on it...just wait and see what happens when i have my tires rotated again. It doesnt do it with my dads 2500 or a friends 3500, i just do my best to stay out of the 55 to 65mph range. what was the cause of it on your trailer?