Quote:B310 is not rated for towing.

Generally speaking, for safety the trailer should not exceed the weight of the car. Now the B310 load capacity is listed on the door pillar and is probably around 200-300 kg. If you fit stronger rear tires and stiffer rear springs and a solid towing hitch, I imagine a trailer of 900 kg could be pulled safely on level roads. On hills you risk burning out the clutch. Make sure the car is level with the trailer attached (meaning stiffer springs or air shocks). When going up and down hills, shift to lower gear and go slower. Lower gears mean more torque. Slower car means easier braking. Ensure more weight is on the trailer tongue (trailer must tip forward if not attached to car). The hitch/towbar is the most important thing and the installer will have more instructions.

B310 towing