Thanks all! I knew I could count on the Twins brotherhood. Gave me a lot to chew on. Obviously I have entered a brave new world with these tires and must "unlearn what I have learned."
I'll take it from here but these are the answers to your questions:
- DOT codes indicate manufacture in 2018 for all of them, in the 46th week specifically for the worst tire
- Last alignment a year ago; will definitely get that done soon
- Pressures were around 32/33psi hot, though I stopped checking the fronts early in the event, and that's probably part of my problem
- Went with stock size for these, 17x7 215/45R-17
- Camber also stock
- Butt dyno dialed in? Yeah AFAIK
and I didn't feel any rollover