My tips for S8:
1. Draft the Corvette at the start till you're at 132 mph, then upshift and pass on the right.
2. At the first turn, brake late till you're past the Pagani Zonda, then try and keep as much speed while riding the curb on the outside. You may have to lightly pump the brakes to stay on a constant turning radius around the R8 and the Aston Martin. You'll want to end up within drafting distance of the Maserati after the first turn.
3. Brake late inside left in the first left of the Esses to get past the Maserati. You'll need to stay left, and brake late lightly to pass the F430.
4. Ignore the squealing, you can carry a lot more speed through the esses than the Lambo will. You should end up right behind the XJ220 at the left bend. He'll pull away from you a bit with the Spyker, let him. You'll need to stay inside them both at the first right bend, and ride the curb inside trying to avoid contact while drifting onto the outside curbing. If you hit it perfect, you can get past the Jag and Spyker, otherwise pass the Spyker inside on the second right bend in 2nd gear. Accelerate under the bridge, you should hit the timing line after the bridge right around 1:06.
5. Make sure to take the hairpin turn smoothly, and try to carry as much speed as possible.
6. If you're able, you can sometimes catch the Skyline in the middle of the sweeping left turn before the long straight, otherwise, try and get close enough to catch a draft down the straight. You should be able to take the bend in the straight at just over 100 mph, if you are still behind the Skyline and California, brake hard inside and beat them to the chicane. It's a race to the finish from there.