Comparing anything currently available on a console to the hardcore PC simulations (be it LFS, GPL, GTR2, etc.) is pretty pointless. It both amuses and winds me up that the GT series of games claim to be simulations - it's about equivalent to a butcher's shop offering brain surgery.Can't argue with the graphics, but for simulation fidelity, Live for Speed is where it is at:
Probably the best tyre model in a simulation short of an F1 team's internal work (heat, wear, deformation etc.). Certainly not pretty, and the cars are fictional, but it's incredibly good. Hard to believe it is the work of three guys. One does sound, one does environments and that leaves just one guy doing all the physics work. His project before this was "Black & White", where the most he modeled was barrels being thrown around, so this really came out of nowhere.
Not that you can really blame them - games don't sell if they're too hard. Driving a high-performance car on the very limits of grip isn't something that you can pick up in 5 laps - even if you're already an extremely proficient and experienced driver, merely adapting to the nuances of a new car takes many hours of track time, before you even start to make adjustments to make it drive how you want it. A console game that came even minutely close to this level of detail would be a commercial disaster. If you count up every single sale of LFS, GPL, GTR2, rFactor, and so on, it would probably still not equal the equivalent of a single month of sales of an arcade game like GT4, Forza, etc.
Of course, I haven't played GT5, so it might completely turn the tables and end up being an all-out hardcore simulator. But I doubt it - Sony are struggling enough already with the PS3, and they need GT5 to be a big seller, and that means appealing to the lowest common denominator.
P.S. Have you tried netKar Pro? It's up their with LFS's tyre model - it doesn't do sidewall deformation but I find the tyre dirtiness more realistic than LFS's rather crude model. But they're both very impressive. Sadly development seems to have been discontinued
