May as well mention that I had to take the Yukon back to Kal-Tire for a rebalance as well. That was a weird one - seemed to be related more to road conditions than speed. Mostly they were fine, but every now and then something would set them off and I'd get a nasty shimmy in the steering. It didn't happen too often, so I did live with that for the whole winter.
Took them back this fall for a rebalance (again, brought them in loose in the back of the truck
![Smiley :)](https://www.autos.ca/forum/Smileys/CarTalk/smiley.gif)
) and Kal-tire was awesome. Talked to the tech who worked on them, and he said it took a couple tries to get them right. He also said he took some time to pry all the rocks out of the tread, just to be sure.
It was a bit of a PITA to have to go back, but the service was excellent. And the tires have been great so far.