ButtonBandits.com review GRID in both single and multiplayer online modes. They write:
"GRID is essentially an arcade racer with simulation elements. With driving aids on the car handling sits somewhere in between PGR and Ridge Racer. Cars can be thrown into corners and remain fairly easy to control, being able to break suddenly or over-steer without having to worry too much about spinning out. With driving aids off, handling sits somewhere in between Forza and PGR."