The pressure in each of your car tires is 2.00 105 Pa. The mass of your car is 1610 kg. Assuming that each of your tires bears one-quarter of the total load, what is the contact area of each tire with the road?

Answer 1

(contact area)xpressurex4 = weight = M g

Solve for the area. For pressure, use that gauge pressure that you have been given.