Originally Posted by sestivers
If wider tires didn't have a larger contact area, then F1 and drag racers would not put those gigantic tires on the back of their car.
You're forgetting about profile. A bicycle tire has a tall, round profile. A car tire has a low, wide profile. In the case of F1 cars, they also have suspension, which keeps the tire in contact with the ground while cornering. Comparing car tires to bike tires makes no sense.