Truck shaking

My truck shakes from the rear end a decent bit at 55 mph and then again around 72 inbetween its smooth. I’ve gotten my tires balanced and rotated a few times to no results. Anyone have any experience with this or know what might be the problem. Thanks

 

If its not the tires, its probably the U-joints then.

 

Curious, what tires? Some members found some brands, like KO2s, required road-force balancing to get right, and only found this after multiple attempts at balancing from different shops.

Need more info on your drivetrain and truck to give other info. Like, is it 2WD or 4WD, as that's pretty important? Is your truck lifted, and if so how much and with which parts? I see "Leaving Kit" in your mods list, but I'm not sure what that is.

 

I think it’s less likely to be the tires myself if it only happens at certain speeds. Typically when it’s tires it tends to start at some highway speed and just get worse the faster you go.

 

Yup! But it's worth asking. I don't feel too confident offering OP any additional input until I hear more details about the truck in question.

 

His 1st post in Nov mentioned "4.5” tuff country lift" if that helps

2004 Tundra JBA upper control arms TuffCountry Lift Questions | Toyota Tundra Forum (tundras.com)

 

Ah. That's what I was getting at. Wonder if any driveline correction was done?

Too many people don't understand it's important to adjust angles when lifting or dropping to avoid unwanted vibrations.

 

the tuff country lift was never put on the truck, i got a good deal on it but i think im going to sell it as im pretty happy with how my truck sits now (3.5" lift in the front its completely level) the back of the truck has not been touched and I got my ebrake cable replaced (original was stretched out) and did the rear break reset that I've heard about and that did not help. The tires are evenly worn no cupping or alignment wear and the U jonts are good.