Now load the car with 50% more weight (500 kg). The additional contact area needed is 55 cm^2 per tire. If you assume that the side walls don't deform, the contact length increases to 9 cm. The change in volume from this additional flattening of the tire is quite small.
Mountain City is a town in Johnson County, Tennessee, United States. The population was 2,383 at the 2000 census and 2,531 at the 2010 census. Mountain City is the county seat of Johnson County. It is the northeasternmost county seat in Tennessee.
Hamilton County, Tennessee. Hamilton County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 336,463, making it the fourth-most populous county in Tennessee. Its county seat is Chattanooga. The county was named for Alexander Hamilton, the first Secretary of the Treasury.