I have completed one season, and now into race 4 on my second.... This is my setup.
Race Assists OFF
Tyre Sim ON
Fuel Sim ON
Legendary Difficulty
20% - 40% race length (depending on whether I liked track or not)
Season 1 - Virgin Racing
In qualifying - I could rarely get above 12th, and in races - I only generally finished higher due to pit-stop strategies. I won 2 races in the season.
Melbourne (started dry, finished wet - I stopped twice, most AI stopped 3 times)
Abu Dhabi (dry - although AI seemed a bit slow round some corners.)
In total I got 78 championship points and finished 7th overall (punching well above my wait I think)
Season 2 (so far) - BMW Sauber, with same sim settings.
R1 Bahrain - Practice 10th - Qualify 3rd - Race 1st
R2 Melbourne - Practice 3rd - Qualify 5th - Race 6th
R3 Malaysia - Practice 8th - Qualify 8th - Race 4th
I thought the tyre sim, fuel sim were the key factors... but actually racing for BMW Sauber, thing seem way more realistic and fair, in perspective. The Virgin was slow (even when right behind team mates car) and could never keep up with most of the cars on a straight. Now am racing for BMW, and only the top 4 constructors have a better straight line speed/acceleration it seems, and I can stay competitive through an entire lap rather than just around a few favoured corners. Having these options off, is basically arcade mode, which explains it being muchier easier to race and win.
Also you start without any R&D upgrades, which I think the AI all have from the start (incl your teammate) which also plays a part.
The tyre simulation seems correct... for a few reasons/observations.
- Unless you are driving 100% smoothly (and I dont, even with a wheel) your traction ability will affect the driving line of your previous lap, unless you lower your speed.
- The AI drives the same every lap, just with fractional speed changes to cornering (hence why the first point becomes more apparent/noticeable when its off)
- Tyre degredation is calculated on race length - so Options on a 100% race may last 20 laps, whereas would only last 4 laps on a 20% race (which explains the dramatic loss in grip or race ability from one lap to another - the gradient is more steep)
And as for fuel simulation...
- When its off the cars are more competitive as it doesnt affect torque. Which explains why nearly every car left me behind on a straight in the Virgin car, which seems the weakest of them all.
- The gradual weight change dramatically affects your lap times (have noticed this in both Virgin and BMW Sauber) in a 40% race you can lose as much as 8secs off your race pace.
- Fuel Sim ON also affects car handling... In the Virgin car, Fuel Sim OFF - I couldnt out-break most cars into corners, but was more competitive on the straights - and with Fuel Sim ON, it seemed the opposite.
Anyway long story short, the games simulation settings seem more realistic/fair depending on the car you are driving... And I dont think the AI are exempt from it (during a race anyway)
One race point I have noticed and has really helped is; if your engine screams on 3rd gear or lower... Your losing acceleration potential. Can mean the difference between reaching 185mph on a straight or 190mph and ultimately an opponent pulling away or not.