It depends:
If tire is on the front of car it can be caused by bad wheel alignment or under-inflation of the tire...on the rear by under-inflation.
It is dependent on the tire materials, pressure, and the outside temperature. So, research your tire specs.
To wear....
Air leaves a tire when the tire valve is open due to the pressure. The pressure outside of the tire is lower than the pressure inside the tire.
The same as the air outside the tyre.
air pressure helps on the inside of a tire but on the outside it does not usually help. as an observation if you get a flat tire and put air inside the tire it gives pressure on the inside were the hole is but if it is on the outside and lets say a pipe rolls down the highway and it hits your tire air pressure helps it make a hole in it or make it flat.
Because the air inside the tire is under pressure. Gas always flows from a region of higher pressure to a region of lower pressure. As the pressure inside the tire is greater than the pressure outside, the air always comes out of the bicycle tyre.
none of the above mate
If inside and outside same pressure that means there is no pressure. The added pressure is what blows the tire up like a balloon and holds the weight of the car up.
The outside of a tire consists of the tread and sidewalls.
well first inside the vehicle in the back, ours is in the back inside the black plastic storage area. There is a bolt that when turned lets the tire down this has to be turned. It lowers the tire outside under the buick.
Uneven tire wear with spots is usually caused by bad shock absorbers or struts. If the car or truck bounces too much while driving down the road it makes bald spots on the tires.
Depends on where you live.