Picked up the other set of SD wheels. Now I have three sets of 16.5 SD wheels!
Think I have figured out the hop, looks to be the drivers side rear tire. When I angle the mirror down and watch it, there appears to be a wiggle in the tire that matches the hop felt in the cab. I am guessing a molding error or a broken belt.
I have emailed the seller to see if he will send me a new one or not. I also have found another supplier of these if anyone is interested...
http://www.100dollarman.com/tires.html
He was on Pirate but a google search is how I found him...
Otherwise the tires did great going over the pass this weekend. It was slick as hell on Friday and I only broke loose once at the very top. Keep in mind I still do not have a functioning 4x4 so.