Hate to burst your bubble but you are not even anywhere close to getting a feel for it. It will take at least another year or two before you can say that.

And as for pushing tires. It's hard to say. Each car is different and each driver is different.

For instance Eric Simmons and I both have exactly the same cars (him 1989 Civic Si - me 1991 Civic Si). We usually run within a couple thousandths of a second of each other. The closest upset was him getting me by 0.002 seconds. I rode with him on one of his runs and he scared the crap out of me. The car's back end sliding around, some sections I thought he was just going to lose it. Then he rode with me and I'm smooth and brake really really deep and hard. The back of my car doesn't slide around at all.

But for the RT-215s they should squeal a bit, not alot. Also they love to be cold so watering them down between runs makes them stay sticky.