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.
Rocky Top is a city in Anderson and Campbell counties in the eastern part of the U.S. state of Tennessee, northwest of Knoxville. The population was 1,781 at the 2010 census. Most of the community is in Anderson County and is included in the Knoxville Metropolitan Statistical Area. On June 26, 2014, the city officially changed its name from Lake City to Rocky Top, after a last-ditch effort by the copyright owners of the song Rocky Top was denied by a federal court.