got a 2007 ram 1500, driving around 40kms it has a small vibration is that my u joints, if i put my truck in neutral, and try moving the drive shaft by hand there is play
cheers

 

Rotational play is normal. U joints can be bad a have no play. I assure you live in Canada? It is possible they are bad. Not many miles. I would have the tires checked and balanced first.

 

yep live in saskatchewan canada, harsh winters, and bitter cold, the truck has 125,000km, when i got the truck the kid had new u joints in the back sit for me, so i was thinking he was changing them out soon since he had bought them already, theres just a small vibration when i go pass the 40km mark up to cruising speeds, i do have 37s on her so maybe its my tires.
cheers

 

Okay so almost 80k? Maybe time. Would still try balance