That's great to know it still works, at least! Sucks that you lost that data.
I know how that is, believe me.
The later games (GT4 and 5, anyways) arguably don't feature rubber-banding, not like GT2 does. GT6 has some rubber-banding, but it's supposed to be the drivers driving more conservatively, if they get a strong lead.
In GT2, the actual handling of the car can become more or less grippy, depending on if you're ahead of them, or not. That's what I've heard, anyways, and I do seem to remember some races which (let's say) featured cars wiping out in Lap 2 at Laguna Seca, me getting way ahead of them, yet by the middle of (let's say) Lap 3, they've all caught up again. In any event, that's one of the things I liked about GT2: the fact that sometimes, multiple cars will be ganging up on us as we're groping towards those turns, and it's up to us to figure out a way to out-maneuver them.
And also how there's rarely a dull moment, assuming you challenge yourself.
Well how are you doing, OP? I'd like to know if you're liking this game, in comparison to the first one, especially.