2016 Kenworth T680 Towing Capacity & Payload
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2016 Kenworth T680 Towing Capacity & Payload
The 2016 Kenworth T680 is a heavy-duty truck designed for serious hauling, with towing capacities that can reach well over 50,000 pounds, depending on its configuration and specification.
Quick Answer
- Max Tow Capacity: Varies significantly by configuration, often exceeding 80,000 lbs (GCWR).
- Max Payload: Varies by configuration, often 10,000 lbs to 20,000 lbs or more (difference between GVWR and curb weight).
- GVWR: Typically ranges from 33,000 lbs to 60,000+ lbs, depending on axle configuration and ratings.
- GCWR: Often ranges from 80,000 lbs up to 140,000 lbs or more for heavy-haul applications.
- Curb Weight: Varies significantly by specification, typically ranging from 16,000 lbs to 22,000 lbs.
- Hitch Class: Class 8 pintle hitch, fifth-wheel kingpin, or gooseneck ball, designed for commercial trailers. Specific hitch type depends on application.
Tow Ratings by Engine & Trim
It's crucial to understand that for a Class 8 truck like the Kenworth T680, "towing capacity" is primarily determined by the Gross Combination Weight Rating (GCWR) and the specific components chosen during the truck's build (engine, transmission, axle ratios, suspension, tires, and frame). There isn't a simple "trim" level like light-duty trucks. Instead, configurations are highly customized.
| Engine | Drivetrain | Configuration/Application | Max GCWR (lbs) | Notes |
|---|---|---|---|---|
| PACCAR MX-13 (405-510 hp) | 6x4, 8x4 | Line Haul, Regional, Heavy Haul | 80,000 - 140,000+ | Highly customizable. Axle ratings are key. |
| Cummins ISX15 (400-600 hp) | 6x4, 8x4 | Line Haul, Regional, Heavy Haul | 80,000 - 140,000+ | Specific transmission and axle ratios impact final GCWR. |
Note: The "Max Tow" capacity for a commercial truck is effectively its GCWR, minus the curb weight of the truck and the weight of any cargo it carries. Users should always consult the door jamb sticker and the vehicle's Bill of Sale/specifications sheet for exact GVWR, GAWR, and GCWR.
More specs for the 2016 Kenworth T680
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2016 Kenworth T680 Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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