If you do not know which winch is right for you, you should calculate the winch rating by taking the vehicle weight and multiplying it by 1.5, then you will get the minimum winch size. But this is not certain. You may need more winch capacity for your intended usage. The most common case is stuck in the mud, and mud has an incredible suction force, which makes your vehicle stuck firmly. You need to calculate vehicle curb weight, gross vehicle weight like fuel, lubricant, coolant, personal equipment, etc.