I think what a lot these detractors don't understand that despite being term a driving simulator, GT5P, is still after all a video game and video game unlike the more serious driving sim, must balance between being true to the car physics but at the same time be forgiving enough to allow some degree of error on the part of the driver. The thing is if you need the same kind of physics prior to the update, you can still use the Normal (N) tires or the S1.
Before the update, the Ferrari F430, although a good and a fun car to drive but it was not until the update that I understood why people like Jeremy Clarkson (of Top gear) raved so much about the car. With the update, I can let the the rear tire run loose and slide through turns with complete abandonment and at the same time able to predictably rein the car in when it's just about to lose it all. The difference is almost night and day. And it's not because I wasn't a good driver prior to the update (I have a lot of top 10 and top 50 time on the leaderboard in professional mode with the more popular cars and tracks and I don't ever use driving aids with my Logitech G25 wheel ) but maybe because of all the things I've learned while driving with the prior tire physics, I'm now having a blast. I still find the Ford GT a beast of drive and you can't just drive most cars without some degree of knowledge and skills. After all, in game like this, the stopwatch is the determining factor and what an absolute judge it is. Those who are fast before, is just as fast now.
Like before, the amount of input placed the control is still as important but now it's seems almost analog and tactile where your input and the car's response is almost at the equal ratio of 1:1. Another thing, AWD vehicles like the Nissan GT-R, predictably doesn't benefit from this update as much as FWD or RWD vehicles. As you can see I'm pretty stoked about the new update and I'm won't be surprised if more improvement is around the corner. Thank you, PD.