I've just finished first on S-10 with the amuse S2000. The gear ratio is very low when you buy it, every car just accelerates away from it, perhaps it's for drifting. I increased it quite a lot which didn't bog down the car whatsoever and then it seemed to be par with the S2000 and the tuned Corvette in the race and managed to finish 5 seconds clear. I tried with the 599 as thats pretty good tuned up and got fairly close but I kept going slightly off track ending up in the sand after about four laps, so I bought a tuned car instead.
I've got all golds for C, B, A and S Events in the spec II JPN copy, just got the dealer events to do, then I'll start doing more on my PAL copy.
When doing the Ford GT time trial in S class I managed to do consistent laps of 1'10'600 - 800 with no slipstreaming and then eventually got a bit of slipstream to get gold. Took me about 15-20 laps to get the hang of the Ford GT. For me it was best to just try and not steer it so much and let the car find it's way around a corner after initially steering into it on HSR. Really enjoy the Ford GT.
On the M3 A trial, I went to the online time trial to practice without the cars in the way and got it down to 1'12.800 on the Japan boards using a ghost, and then just applied that to the A-3 event, and it seemed pretty much the same for both the A event and the online TT in the BMW M3 with the difference just being S1 and S2 tyres.
I was loosing 200-300 hundreds of a second on the tight right then left near the end before the uphill straight on Eiger A-3 by pushing too much and not feeding the car round and letting the momentum take me round, after that I could just roll through it and was better set for accelerating out and then up the hill and managing not to drop below 60 kmh when before I was 45-55 ish and too narrow.
BMW M3 A-3 was the hardest for me out of all the events in Spec I and the new Spec II events.