Hi, Im new to dodgeforums.com! I am trying to find out what the heck is causing this insane vibration on my truck. I have a 2007 Dodge Ram 3500 2WD with a 6.7L Cummins Everything is stock but i do have a lift in the back for towing. I bought this truck without the lift in it and it vibrated the exact same way before the lift so i know its not that... I have taken it to the dealer but they said that its normal for a regular cab 3500 to bounce... i understand it should be rough but at 70+ MPH it shacks so bad my glasses almost fall off! I know it can't be normal but i don't know what to do! The dealer also said my tires are rated at 60 MPH but a truck should be able to do 75 without vibrating this bad.
PS. the truck only has 17,000 miles on it

 

Welcome to the site. I will move this thread to the Cummins section,
FF

 

1. Have you had your tires balanced?
2. Does it go away or get better when you have weight in the back end?
3. What tires do you have?

 

Welcome to the site

 

Do you feel it more in the steering wheel or the seat of your pants, at what speed does it start to come in? Does it go away at faster speeds or just starts and gets progressively worse the faster you go? I would be suspect of the drive shaft at this point. If you put it in neutral does it go away or change at all? I'd ask to talk to a district warranty Rep., I can't see how they could say that is normal.

 

maybe bent drive shaft

 

Check ur ball joints and center link, lift the front of the truck up so the wheels are off the ground then grab the top and the bottem of the tired and wiggle it up and down, if youve got alot of movement id suggest replacing ur ball joints with aftermarket ones

 

Hello all, I'm new to the site today and enjoying all the great information.
I also have a 07 3500 Dually with a similar vibration issue.
Truck is bone stock, currently running Michelin M&S II tires, truck has 88,000 kms. My vibration starts at about 105 km/hr (55mph) and continues through 120 km/hr. (65 mph) Speeds above or below those numbers has no vibrations. Definately rear of the truck, have had drive shaft and both u-joints replaced.
You can feel it in the seat of your pants, the steering wheel is rock solid with no vibration. Thought it was tires so bought a new set of stock Generals. Good for a few days then it returned. Brought it back to the tire shop, balance was all messed up the they re-balanced them. The tire shop said I may have spun the tires in the rims?? Balance was out that bad.
Good for a week or so, then the vibration returned. Bought a set of Centramatic Wheel Balancers in hopes of improving or eliminating the balancing issue, now the vibration only shows up once in a while at the same speeds, not always there. Gonna check tire balance again to see but just wondering if anyone had new information, thanks in advance.

 

I have had 2 issues with my my front end.
1st issue was a violent shake in the front end at highway speeds that almost killed me and my family. I took the truck to the dealer 6 times before thay were able to fix the right way. It seams that there was a recall on a particular part in the front end. I would have to pull out my paperwork to find out specifically.
2nd is slight constant vibration from 70 -75 mph. i'm thinking tire balance, but not sure.
Has anyone gotten to the bottom of this?

 

No changes as of yet, I removed my front drive shaft to eliminate that possibility. No change. I've had my tires re-balanced twice, no result. I've got it booked into the local Dodge dealer next week again to try and find the problem, will report back afterwards.