I was struggling with this race for a while & stumbled across this thread/site via Google search on how to beat it.
I used the Lambo & the only difference I made from OP is that I bumped the gearing up 1 notch. It took a few attempts (A.I. thought it was bumper car racing) but I found the best way to get ahead & stay ahead was to use a slightly drift style approach, especially in Deep Forest. I used medium race tyres & in both races they were just about gone at the start of the 2nd lap but seeing as the Lambo had understeer issues I found it easier to use the back end to turn.
This was easily the best, most exciting race for me so far in GT5, white knuckle, edge of your seat racing.
I used the Lambo & the only difference I made from OP is that I bumped the gearing up 1 notch. It took a few attempts (A.I. thought it was bumper car racing) but I found the best way to get ahead & stay ahead was to use a slightly drift style approach, especially in Deep Forest. I used medium race tyres & in both races they were just about gone at the start of the 2nd lap but seeing as the Lambo had understeer issues I found it easier to use the back end to turn.
This was easily the best, most exciting race for me so far in GT5, white knuckle, edge of your seat racing.