You might have "out of round" wheels on your Chinese ATV. If you always ride on the dirt you probably won't know. Ride your atv on a flat paved road to see if you have a vibration. My TaoTao Rhino is on it's 3rd front wheel (from the dealer) and they're all out of round causing a vibration when riding on pavement. No it's not a bearing or spindle problem because I swapped the front tire/wheels and still same wheel that shakes. At least jack up your ride and spin the wheels to check for out of roundness. It's just cheap chinese manufacturing.