IMO, Rickson makes a superior wheel with great, outstanding, mounting and balancing. I found out today that part of their balancing process is trueing of the tire with a tire lathe. I noticed in several small areas of the tire tread on each tire as I was mounting them that a small amount of tire material was removed to produce a perfectly round tire (thanks for the lesson Bryan). That's one of the reason's they drive so smoothly.
Historically and Jimh425 might be correct with (8 years) they've had a backlog issue and it is a shame. I think Buzzcut1 was the worst case I have ever heard of.