2018 International MV Towing Capacity & Payload

The 2018 International MV towing capacity varies significantly based on its configuration, as these are medium-duty vocational trucks designed for a wide range of applications. These trucks are not rated using the SAE J2807 standard, which is primarily for light-duty trucks and SUVs.

Quick Answer

• Max Tow Capacity: Up to 50,000 lbs (conventional, depending on GCWR and upfit)
• Max Payload: Highly variable with chassis, body, and upfit
• GVWR: 25,999 – 37,000 lbs
• GCWR: Up to 50,000 lbs (depending on engine and configuration)
• Curb Weight: Highly variable based on chassis configuration and upfit; typically ranges from 10,000 lbs to 15,000+ lbs
• Hitch Class: Typically Class IV or V, often using pintle hitches or custom heavy-duty receivers. Conventional tongue weight capacity will be a percentage of the gross trailer weight. Specific ratings depend on the installed hitch and chassis capacity.

Tow Ratings by Engine & Trim

It's crucial to understand that the "trim" for a 2018 International MV is not like a light-duty truck. Instead, it refers to the specific chassis, wheelbase, suspension, and vocation-specific upfit. Towing capacity for the International MV is determined by the Gross Combination Weight Rating (GCWR) and the Gross Vehicle Weight Rating (GVWR) of the specific truck as built and certified. The available engines largely dictate the GCWR.

• Important Note: The "Max Tow" capacity for a medium-duty truck like the International MV is calculated by subtracting the truck's curb weight and payload from its Gross Combination Weight Rating (GCWR). The actual achievable tow capacity also depends heavily on the specific upfit, axle ratios, transmission, and whether the truck is equipped with an appropriate hitch and braking system for the trailer. Always refer to the door jamb sticker and the vehicle's certification label for the precise GVWR and GCWR of your specific truck.

Tow Package Contents

International MV trucks are highly configurable. While there isn't a single "tow package" like in light-duty vehicles, manufacturers and upfitters offer various options to facilitate towing:

• Transmission Cooler: Heavy-duty transmissions designed for vocational use typically feature robust cooling systems as standard or an available option to handle demanding loads.
• Integrated Brake Controller: An integrated trailer brake controller is usually an available factory or dealer-installed option, essential for safely towing trailers equipped with electric brakes.
• Trailer Sway Control: Sophisticated electronic trailer sway control systems are less common in this class of truck but stability control systems aid overall vehicle stability. Proper trailer loading and weight distribution are the primary methods for managing sway with these heavy trailers.
• 7-Pin Trailer Connector: Standard 7-pin or even more robust commercial trailer connectors are typically specified during the build process to provide power and brake control to the trailer.

5th-Wheel & Gooseneck

The 2018 International MV chassis can be configured for 5th-wheel or gooseneck towing, particularly for applications like hotshot trucking, heavy equipment transport, or specialized trailers. When configured for these applications, the chassis is often equipped with reinforce frame sections and appropriate mounting points for fifth-wheel hitches or gooseneck balls. The towing capacity for these configurations would still be limited by the truck's GCWR and the capacity of the installed hitch system.

Weight Distribution & WDH Requirements

For conventional towing with an International MV, especially when approaching maximum capacities or using trailers with significant tongue weight, using a weight distribution hitch (WDH) may seem relevant. However, for the heavy trailers these trucks are designed to tow, especially those with air brakes or hydraulic brakes, a WDH is rarely used. Instead, the focus is on achieving proper tongue weight (typically 10-15% of the trailer's gross weight for conventional trailers) within the limits of the truck's rear GAWR (Gross Axle Weight Rating).

For 5th-wheel and gooseneck applications, the weight of the trailer is directly placed over the truck's rear axle, negating the need for a WDH. Proper kingpin or gooseneck weight distribution is crucial to remain within the truck's rear GAWR and tire capacities.

Real-World Towing Tips for this Vehicle

• Know Your Ratings: Always verify the specific GVWR, GCWR, GAWRs, and tire capacities on your truck's door jamb sticker and certification labels. These numbers are unique to your vehicle's build.
• Load Carefully: Ensure both the truck and the trailer are loaded correctly to maintain proper balance and stay within all weight ratings. Overloading can lead to instability, premature wear, and unsafe driving conditions.
• Pre-Trip Inspection: Perform thorough pre-trip inspections, checking tires, brakes, lights, and hitch connections before every tow.
• Brake Controller Adjustment: Properly adjust your integrated trailer brake controller for smooth and effective trailer braking.
• Maintain Your Truck: Due to the heavy-duty nature of these vehicles and the stresses of towing, regular maintenance, especially of the engine, transmission, brakes, and suspension components, is critical.
• Professional Help: Consider professional training or guidance if you are new to operating medium-duty trucks with significant loads.

Common Towing-Related Issues

• Overheating: While rare with properly spec'd International MVs, heavy loads in extreme conditions can stress the cooling system. Ensure your cooling system is in top condition.
• Brake Wear: Increased weight naturally leads to higher brake wear. Regular inspection and replacement of brake components are vital.
• Tire Issues: Overloaded tires can lead to blowouts and dangerous situations. Verify tire pressure and capacity before each trip.
• Suspension Sag: Consistent heavy loads can accelerate wear on suspension components. Monitor your suspension for signs of fatigue.
• Drivetrain Stress: The transmission and axles work harder when towing. Follow manufacturer maintenance schedules for fluid changes and inspections.

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