At the risk of gettin back into the dogfight about fat vs skinny tires, I'm gonna post some photos of the Vinson/Allison Corvette. They made 2 licensing runs in the 170 range and the team mentioned that it ran straight as an arrow. Admittedly, they weren't pushing real hard, but even though the car handled well, they switched to "skinnies" so that Rob Freyvogel can open it up for a record attempt.
They didn't change tires because of handling problems or instability, but because of a tire rub on the wheel arch, seen in the 3rd photo. Rather than risk tire damage and any issues as a result, they swapped 'em out. They may do some modifications and run the fat tires later, but at this time, they're gonna go with what worked last year.
Last photo is a an MG Midget from Milwaukee...the name otta be familiar to most folks. They'd just gotten their pit set up when I shot the photo; I assume they'll try to get some runs in today.
Time for me to head out for record returns.