Can anyone help me out? I have a Chinese Gaia X8. It runs very well BUT top speed is 40kph. According to the specs it should be 60kph.The manufacturer does not answer my messages so I'm a bit stuck. I believe that they have fitted the wrong axle as they also manufacture a pickup with a 40kph speed rating. The motor is 4.2kw induction motor with a hall sensor. Speedo reads 55-60 kph but car is travelling at 40kph. What I need is suggestions to increase the top speed. Any help anyone?