i just did this race today, finally...
yesterday i did the el capitan race
today i changed the oil and bought super hards and hards for the minolta, then ran the races, admitedly, im not the best driver...
anyways, i won the first 2 races, placed 5th in race 3, won race 4, placed 3rd in race 5, second in race 6, won 7, third in 8, won 9, and second in 10.
i won half the races, and won the overall by 2pts over the playstation pescarallo, with the peugot 4 pts behind that...oddly the other minolta was in 4th, ahead of the jaguar xjr-9 and the bentley speed 8.
I found it superhelpfull to practice the races to set the gearbox, and also to use the right tires for the right race. I remember one race (i think the one with 18 laps) u ran super-hards, and was back nearly 30 seconds at lap 9. After that cars started to put, and my tires finally started to warm up, allowing me to take the lead in the last lap, so be patient. Another strategy i used on one race (one of the 11laps with a longer track) was to use hards, put on lap 8 (before anyone else), switch to mediums, and be running with near-perfect tires while everyone else was pitting/warming theirs up. Also, you can pretty much count on the lead car and perhaps the second car to pit at least once, except for the sarthe. In my race, the jaguar was out in front for the first 4 laps followed closesly by the minolta , but both would pit every race (except sarthe, which the jag won, the minolta took 3rd) and come in towards the end...So you dont neccesssarily have to drive like crazy to win, instead keep urself in 2nd or 3rd but close to the lead, save gas and tires by drafting and stuff like that, and then wait for the lead cars to pit or the final lap to take the lead.
im now going to go back and win the races that i came in 2nd or whatever, but i think im going to use the amg-mercedes clk-gtr race car, only because i have a ton of miles on my minolta and the amg's are easy come, easy go. If you plan right and use tires/pitting to your advantage, you should be able to win this race even if you arent using a super-fast car...
hope this works (oh yea, i used totall stocks settings)