2005 Saab 9-3 Owner's Manual - Page 188

186 Starting and driving Trailer hitch load The weight distribution on the trailer makes a lot of difference to the handling properties of the car and trailer combination. With a two-wheel trailer, concentrate the load over the wheels and keep it as low as possible. The trailer should be loaded so that the load on the towball is 110-165 lbs. (50-75 kg). Note that this load must be included in the total load for the car. If this now exceeds the specified load capacity, the load in the trunk may have to be reduced by the corresponding amount. Recommendations for cars with manual transmission Rises in coolant temperature are indicated by the temperature gauge in the main instrument panel. When the needle is just outside the red zone, the A/C compressor will be switched off and, on certain engine variants, the maximum engine torque will be limited. When continuing your journey, select a low gear in which the engine speed is about 3,500 rpm until the incline eases. WARNING Remember to use engine-braking (selector position 1, 2, or 3) to spare the brakes when you are driving on a long or steep downhill slope. Overheating can cause the brakes to fade! Distribution of load in trailer a Light b Moderate c Heavy