Yeah, well you guys may, indeed, have a problem. I suppose, if it is under warranty, you could take it in and have it checked out...The Nittos and the Pro-Comps have been put on by quite a few VX's owners that post on this site and I don't believe I recall any problems posted such as you report.
Presuming your tire diameters are all four the sameTechnically, I can think of no reason these tires by themselves would cause some abberation in the TOD system. So a trip to the dealer might be in order.
FYI... I owned an auto transmission shop out here for many years and I fixed mucho 4wd systems, though never a system like this
John