How cold does it have to be not ride a four wheeler?

The exact temperature at which it becomes unsafe to ride a four-wheeler depends on various factors, including the rider's experience, the type of terrain, and the weather conditions. Generally, it is not advisable to ride a four-wheeler when the temperature drops below freezing (32 degrees Fahrenheit). Cold weather can affect the performance of the vehicle, making it more difficult to handle and control. Additionally, cold temperatures can increase the risk of accidents due to reduced traction and visibility.