3500 (mostly highway) mile update.
They still cannot be easily told from new.
Work fine on the hiway and great in the (mild) offroad I have exposed them to.
Got an odd vibration that turns on like a switch at 84mph.
Never noticd it before but hadn't driven the SUV at that speed with these tires before.
I only noticed this when I drove through Atlanta and the flow of traffic increased in speed putting me into the mid 80s mph and higher.
(Actually there was a convoy of V8 SUVs that I decided to join, Roll Royce Cullinan(!), BWM something, MB G500, Jeep Trackhawk, As they zoomed past I felt my VK56de egging me on to run this company but thats when I discovered the vibration)
Its not real a strong vibration but noticeable to me, so I figured low hanging fruit might be a tire balancing.
I had it Roadforce balanced on by an excellent local shop.
https://www.expressoil.com/stores/crest ... ntent=1611
They told me the tires failed the roadforce test.
They did a traditional balance them (most were off by about an ounce) but they had bad roadforce numbers and the roadforce machine told them even moving them on the rim would do little good for this.
They also tested the spare.
4 out of 5 (yes spare was checked too) of these still quite new tires failed roadforce and could not be made to pass roadforce.
I suspect they were like from the beginning and this is not something that has recently happened.
They also still cannot be easily told from new.
We will see if the the regular balancing helped (which the shop said they DO balance fine just not in roadforce).. Otherwise next step alignment check but given they all failed roadforce this may be in vain.
I wonder if this could be a warranty claim to Yokohama (but am otherwise quite happy with them)...