Yea they were road force balanced at Tires Plus. I did have 1 tire that was out of round and had to buy a replacement. Now the ride is improved but still not smooth.
Well, sorry to hear that.
I think a little tradeoff has to be made. There's so much more weight and mass being spun (and farther from the hub) to be balanced. If you know your tires are within spec of being round, then maybe ask to watch them balance the wheels.
I used to work tires and with a little older machines, I was kind of the go to guy to get the stubborn ones balanced. It's a lot more than just slapping the weight where the machine says, once you know it won't balance out. First step they should have done was spun the tire 90* on the rim and start there.
Also, you have to look at the cost of theses tires. I don't know what a "high end" tire would cost, but I'd bet it's a lot more than the ~250ish we're seeing these go for.
A lot of variables, but in the end I know that I'm not really ever going to find that perfectly smooth OEM ride I gave up to get the advantages of 37".