I have a new RAM 1500 with 3.6l and 8 speed auto with only 600 miles on it. From about 50-60 mph it has a bounce or vibration that seems to be coming from the rear of the truck. I took it to the Ram dealer and they rebalanced the tires and that didn't help. So then I took it to the Goodyear tire dealer who checked it and said there is nothing wrong with the tires and said they think problem is in the truck driveshaft, that it was the problem. So then I take the truck back to the RAM dealer, they said they checked all the driveline and could not find any reason for the shake, they decide that it's a tire issue, but the service manager does agree that it does shake and that he feels it but he thinks it is the tires. So I have a shake or bounce that the dealer says is tires, the tire dealer says it's a truck problem so where do I go from here? I just want it fixed soon. Any suggestions? Thanks

 

If you don't feel any shaking in the front end, try rotating the front tires to the rear and see if the vibration is gone. That will tell you if it's a wheel or tire issue.

 

Does this truck have air bags and/or air suspension...???

Had the same problem with mine right from brand new in 2010. Replace the rear shocks.
The OEM shocks are hit and miss, some ok some are junk from the get go...!!!!
I would concider "Pro-Comp" brand. (lifetime warranty as well) Google them.
I`ve installed these on a number of bouncy trucks, it fixed them.

Afterthought added:
Make sure they check the 4 wheel alignment on a GOOD alignment machine.
Also make sure they have a QUALIFIED alignment specialist to do the job.
Demand a "PRINT OUT" of the before and after of the alignment (to compare)

 

Pro Comp Shocks
http://www.4wheelparts.com/Lift-Kits...0comp%20shocks

 

I have already rotated the tires front to back which didn't help. I also have the 265/70R17 Goodyear Wrangler AR-S

 

Sounds like the same issue I have. Nothing has helped... rebalancing, rotating, holy water. Nothing changes the bounce/hop/vibration I feel at about 65.

I strongly suspect a bad tire, but I won't know for sure until I change the tires in another 10k miles.

 

Keep in mind that bad shocks can make a good tire go bad very quickly.

 

Call chrysler with the complaint, THEN have them approve you to go directly to a goodyear tire dealer. (wrangler tires suck - poor quality) The tires these trucks come with are "second rate" at best. A Goodyear tire dealer will tell you that straight up how crappy the tires are that come on new vehicles. I`ve been down this path with the first 2010 RC hemi 4x4 truck i bought, and chrysler approved me to go to the goodyear dealer... they replaced all 4 tires, including the fullsize spare for free, with only 500 miles on the truck at that time. My other 2010 hemi qc 4x4 hopped in the rear, that turned out to be the rear shocks when it was brand new.