Rear End wobble?

I noticed lately that at higher speeds I feel a little wobble from the rear end. It kicks in at 75-80mph. The flow of traffic to work goes that fast on my way to work so...that’s that. I don’t feel it in the steering wheel so I assume it’s from the back end of the truck. I can see the passanger seat shake a little bit. Was going to have them look at it during the 5k check up. Looking to see if anyone else had that issue so I know how to steer the conversation at the dealer.

 

Might simply be a tire a little low or out of balance.

 

Most likely a tire out of balance, but could also be a bent axle or wheel. Have you hit a bad pothole or something?

 

I'd think balance could be a problem. Bent axel or wheel would exhibit all the time I'd think.

Is it a side to side wobble? If it's up/down might just be the right frequency for the suspension due to bumps in the road. There is a stretch of interstate I travel that is just miserable at the right speeds.

 

Good point...guess I missed that it only kicked in at 75-80.

 

Rotate your tires and see if the wobble moves to the front, or even disappears. If so, you'll know you have one, or more, tire that needs balancing.

 

Good point about the rotating tires. I will tell the dealer about it and when they rotate them maybe that will shed some light.

All the tires are at 36-37psi. It’s a side wobble if I had to pick one.

Thanks guys

 

If they're pulling the tires off to rotate they may as well throw it on the balance machine lol.

I think the idea was for you to rotate yourself to see if it's the tires then have them rebalanced.

I wouldn't suggest telling the dealer this as it gives them an easy way out of doing anything if it does turn out to be a bigger issue.

 

Also have the dealer check the treads for crooked tread lines or high spots which is a sign of warped belts. When I ran Continentals on my VW, it would happen to at least one tire every 3-4 months. Switched to Goodyear Eagle GT's and Sport's and have never had a belt warp.

 

1st thing Id check is wheel torque before anything else. just to be safe once that's out of the way. if all wheels were tight and not loose id try and rotate the tires your self if a tire is out of balance and on the front axle it will usually cause a vibration in the steering wheel at highway speeds.. if you want to check the rear axle yourself just jack up the rear axle with both tires off the ground and jack stands in place. turn the traction control completely off and have someone run the truck in the air. stand directly behind the tires and look down the side wall if its bent you should be able to visually see it. the correct way to check would be with a dial indicator but usually if its bad enough you notice it inside you should be able to see it.. its also a good time to look at the tires with them spinning look at the tire directly from the face of the wheel. look at the tread and look for high spots or low spots this could indicate that the tires structure inside is separating or show wear from tires locking up during braking.. if everything checks out id have tires road forced and go from there