RAM 2015 ProMaster City Owner's Manual page 275

Trailer Hitch Classification
The following chart provides the industry standard for
the maximum trailer weight a given trailer hitch class can
Class I - Light Duty
Class II - Medium Duty
Class III - Heavy Duty
Class IV - Extra Heavy Duty
Refer to the "Trailer Towing Weights (Maximum Trailer Weight Ratings)" chart for the Maximum Gross Trailer
Weight (GTW) towable for your given drivetrain.
All trailer hitches should be professionally installed on your vehicle.
Trailer Hitch Classification Definitions
Class
tow and should be used to assist you in selecting the
correct trailer hitch for your intended towing condition.
Max. Trailer Hitch Industry Standards
3,500 lbs (1 587 kg)
5,000 lbs (2 268 kg)
10,000 lbs (4 540 kg)
I n f o r ma t i o n P r o v i d e d b y :
STARTING AND OPERATING 273
2,000 lbs (907 kg)
5