Normally wide tires would do just that, my rears are more straight line tires than cornering tires. Even so, surprisingly they turned in decent numbers in these tests, more would be expected if they were new and when there is time to optimize balance and pressures. In the slalom, neutral throttle, there was minor understeer which, was easily overcome with throttle position adjustment. In skid pad, there was a noticeable oversteer in right handers, requiring consistent steering input reduction to maintain the desired circle diameter. yet oddly the G load numbers were still about the same in both directions. the car has a custom built front bar and no (removed) rear bar, this testing revealed that no rear bar is needed (on this setup at least). Very interested in getting out for more work on this subject. One other thing - body lean was noticeable, something that is seemingly non existent during spirited road cornering
I agree that a nice upgrade would be a faster rack, but in my car that would require power assist at parking lot speeds.
Other owners comment that their rear tires spin easily on acceleration, these tires do not, so there is an advantage there even if they are not significantly better in cornering.