After a couple of weeks of waiting for it, a red
RS200 finally showed up in my UCD yesterday. I even had enough money (in GT5 terms) to both buy, repair and upgrade it. As usually I started with the car in the lvl15 Tuner Challenge at GVS, using a DS3 and all your settings, apart from the automatic gearbox.
The car feels deceptively slow but manages some decent times nevertheless (although this one has me furthest away from your posted time of all your cars). I got it down to a low 2.04 and while more is certainly in it, there wasn't more in me today
(
EDIT: after being shopwn how it is done, I got the time down to a low 2.02 within the course of 6 laps - if you use it, ignore the driving line for the second turn and unbalance the car before entering the final corner, it allows you to get through full throttle).
As for behaviour it is basically still a safe and easy to control car. Acceleration feels slower than the power to weight ratio would have you expect and it tends to lose time on the longer straights. Grip is good, especially accelerating out of corners, and the occassional oversteery moment can be controlled with ease - no matter how insane the angle, one can hold almost anything (if I can, I am sure pretty much everyone will be able to). Sometimes one gets the impression that you will save it even if you are looking at the road through the C pillar, and most of the time the impression would be correct
Not braking hard or early enough will have you enter corners understeering - if they are slow enough full throttle application suffices for the back to come around and power you out. If it is a higher speed application, you are basically stuck between a rock and a hard place - further braking will have the car plow on, no throttle will have it continue understeering and giving it the welly will have the front wash out first, before being pulled back in line (OK if you have tons of space, otherwise less than ideal).
High speed stability is good, too - and surprisingly, you will easily be able to hold a drift here, too. Not that you generally want to, although I found that getting into one in the middle of the second corner helped with time.
The third section was the one where I seemed to be losing most time - getting it to grip properly and to a decent speed in the last tunnel was more miss than hit in my hands and the two corners that follow I also need to learn a better way through with this car. The last one is also problematic. If you do not lift before entry, the drums on the left becon - lifting in the corner only makes it worse, even brakes do not seem to help all that much. (
EDIT: again, the trick is either learning how to cope with it or being shown the way - more power in the case of the S combination after the third tunnel, and unsettling the car a bit before the last turn, getting it into a light drift will remove the problems I described before).
I have to rush off, but will return with a description of the RS200 at Suzuka, too
In the meantime, a job well done, even if I cannot really get most out of it yet, it is at least good fun 👍
And I did not lose places doing it, either. The S curves, Gyaku and Dunlop all worked well - a bit of lift off oversteer could be provoked before each, allowing you to go through without understeering (not sure it is the fastest way around but it sure was fun). I took the first of the Degner curves in a four wheel drift usually and provided I did not drift all the way out into gravel, the second one was a doddle. The getting the back out in slow corners by mashing the throttle also helped power out of the Hairpin curve. Finally in the 130R I usually produced a bit of a wobble, the car not quite sure whether to oversteer or understeer but that again can be attributed back to me, not quite knowing whether it will make the corner or not 
