Quote from Primoz :

hankstar really hit the nail on its head. Tristan said it nicely too. I still think it would divide the game into two parts. Oh, in this thread i realized that this offical forum can be a bad thing too. people suggest and want lot's of stuff, even if they are told (with arguments) that it wouldn't work. Just like if you'd go to say the official EA forum, where the NFS MW devs hang out (doesn't exist, i know) and start bugging them to improve the physics. Why? The game just wasn't meant for that. Same as LFS isn't meant for engine tuning. It's meant for games like GT4, NFSU/MW. Little kids play those games and brag around their friends 'ya, i've got a 10000 bhp skyline, beat that. I has 10 turbos and a 15 litre engine'. In LFS people can brag about their laptimes ut don't If they are asked they just tell their best time and let their racing do the talking. And that's where they are best.. beating other people in basicly same cars. You can get a lot of WR sets from inferno (heck, i'm a standard 'subscriber' for Flotch's FXR and at times UFR sets) and then you loose against those WR holding guys just because you are slower. Tunning would just mean all the people would run at the maximum limit (there HAS to be a limit, otherwise people would run 1500 bhp UF1000s) and then the cars would be the same.

Have you ever seen a mini with 1500 bhp. I haven't.illepall Thoug I suggested a tuned class I didn't mean it to be unrealistic.
I still can't see the big issue on introducing another class to the game.