How could towing an overloaded trailer affect a vehicle?

It could improve braking ability when going downhill.
It could improve road holding on bends.
It could impair the vehicle’s steering and braking.
It could improve the vehicle’s fuel consumption.

Explantion: You should not take an overloaded trailer onto a public road. An overloaded trailer impairs the stability, steering and braking of the towing vehicle.

Theory Tester

How could towing an overloaded trailer affect a vehicle?

Legal Matters/Rules of the Road