2012 Jeep Wrangler Owner Manual - Page 482

480 STARTING AND OPERATING WARNING! (Continued) 4. Tongue weight rating for the trailer hitch utilized (This requirement may limit the ability to always achieve the 10% to 15% range of tongue weight as a percentage of total trailer weight). Towing Requirements - Tires − When replacing tires, refer to "Tires - General Information" in "Starting and Operating" for information on replacement tires and for proper tire replacement procedures. Replacing tires with a higher load carrying capacity will not increase the vehicle's GVWR and GAWR limits. Towing Requirements - Trailer Brakes − Proper tire inflation pressures are essential to the safe − Do not interconnect the hydraulic brake system or vacuum system of your vehicle with that of the trailer. and satisfactory operation of your vehicle. Refer to This could cause inadequate braking and possible "Tires - General Information" in "Starting and Operpersonal injury. ating" for proper tire inflation procedures. − Check the trailer tires for proper tire inflation pres- − An electronically-actuated trailer brake controller is required when towing a trailer with electronically sures before trailer usage. actuated brakes. When towing a trailer equipped with − Check for signs of tire wear or visible tire damage a hydraulic surge-actuated brake system, an electronic before towing a trailer. Refer to "Tires - General brake controller is not required. Information" in "Starting and Operating" for the proper inspection procedure.