These tires were balanced with sandbags. Could this be a culprit? Also can they be road forced balanced even with the sandbags?
Just to clarifiy, The 2 tires they replaced were the drivers side rear. The shake does feel like its from the rear. The shop said they had the truck off the ground with the tires spinning and could see the two rear drivers side tires “hopping” so they swapped them. Again, it didnt make a difference.
I wouldnt be surprised if it was u joints. The shake seems to change with resistance. For example, its much worse when im coasting, but seems to clear up a little during acceleration. Also it wont shake too bad at all at 60, but if i go up to 70 the shaking fit begins and i have to go all the way down to 50 to make it stop. Its really weird. Almost seems like rear end to me now that i think about it.
Im also in an urban area and its hard to get the rig up to speed. Its a chore to drive it all the way to a highway which i why i think the shop is butchering the diagnosis.