One thing I've noticed about the 370 is that it has ungodly amounts of grip. I'm not sure if that is the point, but when you run a wild setup with the car jacked all the way up and the springs soft, you can actually get it to two wheel through the corners! I've never had that happen before with most of the GT cars I've raced, even with radical setups..
I think every single car that was released by ISI are all in WIP state at the moment, that's why bugs are everywhere.
These comments and arguments dont' mean much without some telemetry showing lateral g forces around a particular corner. For every person that says one car has too much grip there is another that says it doesn't have enough. just my two cents.
Tires don't have dropoff in grip determined by the surface area that they should have. Where a car on two wheels would perhaps understeer and lower, they currently don't.