The main issues I noticed were:
The new audio is definitely an improvement, but some of the sounds (mainly the tracks) don't seem as intense as I imagine they would be irl. Not that bad when driving, definitely more noticeable when standing nearby as it passes.
The Kuma stopping completely when it slows to 10 km/h or less is a bit annoying.
As mentioned above, the 'drifting' and rear spin seems over-exaggerated.
The small concrete walls used as curbs at Altis airport (Land_Concrete_SmallWall_8m_F) almost bring the tank to a halt. More stopping power than the rock walls now. Previously it would slow the tank down, but not as severely as it does now.