1. inflatable drive: inflatable mechanism up and down with oil station refuelling cylinder drive, inflatable height position can be adjusted by touch screen with one key;
2. the replacement of inflatable sleeve, according to the size of the wheel hub automatically and quickly;
3. total inflation pressure range: 2-4 bar (T-type spare tyre inflation pressure is 4.2 bar);
4. inflation accuracy: ≤±0.2 bar.