I've been testing loads of LMP cars for endurance races,like 1 hour long races at La Sarthe.
I know that with my DFGT being gentle with power and turning I can hit around 3:13 in the actual LM24 A-Spec event,I didn't finish it,but I did 1 hour of running,doing laps from 3:11 to 3:16,this was with the speed 8,I can get around 10laps of tyre life,I can do 11 if I take it easy,with the Audi R8 '01 I can pop into
3:09 but my tyres can only last 8laps with the same technique,the Audi is running a similar setup to the Bentley too,but the Audi seems to have a much more aggressive power imput which hurts the rear tyres,this is why I use the Speed 8 for long races since it's fuel and tyre consumption is really good compared to other LMP cars,just lacks that straight line speed and acceleration by about 5-10mph down the longest straights compared to the other decent LMP cars,the R8 and Speed 8 I mentioned are fully tuned and driven on RS tyres.But you can still hold your own against the A.I in a GTR TC,I tried it for 1 hour and I had a minute lead by then,fuel is not that good on that car,only 9laps and front tyres are quite worn by then,I usually adjust Torque Split(4WD only) more to the rear when this happens using the RA menu,my GTR TC fastest time during this test was 3:28.xxx.