Better Bentley

So i use the bentely and the jag for my GT cars but they both seem to kinda suck in handling im seeing the drivatars take perfect turns and come out of it like they dont lose speed but i cant get my bentley to do the same it seems like when i hit the brakes well it still slams the walls and when i turn it just goes crazy unless i stop completey iv doen almost every tune i can think of of but non of it works for this car it almsot seems like a huge clunk of metal flying accropss the lanes and turns kinda like an out of control train type of car anyone have a set up that makes the bently brake on a dime and take turns smooth and perfect, i know its nots the driver i got my vanquish to drive the way i like but the bentely seems to just be such a bulky thing