Anybody else experience this? Im going down the highway and the rear end seems to be like hopping or bouncing it seems when i go down the highway, i never notice it driving slow but on the highway i can feel it and even when i look in the rear view mirror i see the tailgate moving up and down...

is this due to "axle wrap"? if so, ive heard the traction bars may help? Just lookin for a way to fix this its rather annoying.

 

axle wrap is usually only under acceleration...it could be wheel hop or the road itself...mine does it on some of these crappy PA roads

 

Yea its strange, the highway seems very smooth so i dont know, my old all terrains did it too but my old mud terrains never did it..

 

sound like i could be 1 of 2 things
1 it could be a belt shifted it 1 of your rear tires - mine do this and i pinpointed it to be this on mine (noticed mine at 65 but gets way worse at 80+ mph) found that both of my rear tires have shifted belts and are bad now just waiting for them to ware out so i can replace them as a set of 4
or
2 your rear shocks are worn out letting the leaf springs just bounce with no resitance

sound like youve changing tires so i wound try a new set of rear shocks and see how that gose

also you need to remeber these tires are not the smoothist tire for the highway they are ment for mud and dirt not highway use so it may just be that ?

 

mine does it on turns when going over a bump. remember the back end of our trucks are very light so will be easy to bounce.

 

Mine did it a few times going 60 MPH down the highway after hitting a moderate bump. Its a very scary thing when it happens.

 

It can also be because of an overload spring when the bed is empty...Have you added anything like that?

 

nope havnt touched the rear end except for shackles. My leaf springs are basically flat now in the back since the shackles went in, no idea why. But im assumign that might have something to do with the bounce

 

why dont you start with having the tires road force balanced? you have almost 33" tall tires, that would have been the first thing that popped into my head...i had a rear imbalance problem, it ended up being a brake drum that had slung the weights off but start with tires

 

Look for mud buildup on the inside of your rim. It'd throw the balance of your tire off, but luckily it's a simple, free fix.

 

i had the same problem with mine. it only realy did it when i was going about 75. the cause of mine was flat spots in the tires.