The filing air in the tyre should be done at the instruction manual specification.

It will safe the fuel, prolong the duration of work of tyre. The filing air in the tyre effect to the driving. The case of the low pressure than the standard will effect the casing down, the temperature will increase, the resistant force the movement, the steering wheel was difficult moving. The duration of work decrease also. The high pressure effect to the tyre as the same destruction.