forgot to add i put racing softs on.
I was amazed at how well the tyres lasted, I didn't change anything other then the tryes, and i had all settings off including ABS.
I found with this low a HP car having ABS off meant i was quicker since i didn't have to brake as much.
I spent a good 3-4hrs just testing different cars in practice, i did about 8 laps in this in practice mode before i gave it a go.
my first few goes i was in the same position as you, had to reset after 4 laps many a times but i stuck with it.
I think it was luck more then anything since the s2000 in my race was stuck in 2nd so i could keep the gap manageable.
you have to just stick it out and when they stay out for there 5th lap they WILL lose heaps of time.
If you can manage an average of 9min laps you will be fine by the end of the race, its just a matter of being able to do that for 4hrs.
Awesome thanks for letting me know, sweet car would love to drive one in real life