2020 Ram 1500 Classic SLT Towing Capacity: Maximum Tow Ratings, Payload & Towing Guide

2020 Ram 1500 Classic SLT Towing Capacity: Overview and Maximum Tow Ratings

Overview

The 2020 Ram 1500 Classic SLT is offered with two primary powertrains — the standard 3.6L Pentastar V6 and the available 5.7L HEMI V8 — and the truck’s towing capability depends heavily on which engine and factory options are chosen. The SLT trim can be equipped with a factory tow package and different axle ratios, which directly affect maximum tow ratings; the 5.7L HEMI V8 with the proper axle and tow package represents the top towing configuration for this model year. Because configurations vary (cab and bed length, 2WD vs. 4WD, and optional equipment), advertised towing numbers are provided as configuration-specific ratings rather than a single figure for all SLT trucks.

Factors that determine maximum tow rating

• Engine and drivetrain: V6 vs. V8 and 2WD vs. 4WD impact pull capacity.
• Axle ratio and gearing: Higher numerical axle ratios improve towing capability.
• Cab/bed configuration: Regular/Quad cab and short/long bed change GVWR and hitch geometry.
• Tow package and cooling: Factory tow packages, transmission coolers and upgraded suspensions raise rated capacity.
• Payload and GCWR limits: Payload capacity and Gross Combined Weight Rating ultimately cap how much you can safely tow.

To determine the exact maximum tow rating for a specific 2020 Ram 1500 Classic SLT, consult the vehicle’s owner’s manual, the certification label on the driver’s door jamb, or Ram’s official towing guide for the 2020 model year. Always use the factory-rated tow chart for your truck’s VIN and configuration, and account for cargo, passengers and tongue weight when selecting a hitch and trailer to avoid exceeding the truck’s rated capacities.

Towing Capacity by Engine: 3.6L V6 vs 5.7L HEMI V8 for the 2020 Ram 1500 Classic SLT

Comparing the Engines

When evaluating 2020 Ram 1500 Classic SLT towing capacity by engine, the choice between the 3.6L V6 and the 5.7L HEMI V8 comes down to intended use. The 3.6L V6 delivers efficient daily driving and is suited for light- to medium-duty trailers, making it a practical option for owners who tow occasionally or carry moderate loads. The 5.7L HEMI V8, by contrast, provides stronger low-end torque and higher overall output, translating into noticeably greater towing capability and better performance when hauling heavier trailers or towing frequently.

Beyond raw engine design, the real-world difference in towing depends on how each engine is configured. The HEMI’s extra torque and power give the 5.7L a clear advantage for demanding towing tasks, especially on grades or during sustained highway pulls, while the 3.6L is optimized for efficiency and lighter towing duties. For users prioritizing maximum tow capacity and trailer control, the V8 is typically the preferred choice; for those balancing fuel economy with occasional towing, the V6 remains a sensible selection.

What Affects Towing Capacity

• Proper equipment and factory tow packages: Axle ratio, transmission cooling, and hitch class can significantly alter the certified towing rating for each engine option.
• Gross Vehicle Weight Rating (GVWR) and GCWR: Payload and the vehicle’s combined weight limits influence how much trailer weight the truck can safely tow regardless of engine.
• Accessories and drivetrain: 4x2 vs 4x4, cab/bed configuration, and aftermarket modifications can change towing performance and manufacturer ratings.

When choosing between the 3.6L V6 and the 5.7L HEMI V8 for the 2020 Ram 1500 Classic SLT, match the engine to your towing profile: the V6 for lighter, occasional towing with better fuel economy, and the HEMI for heavier, more frequent towing where maximum capacity, sustained power, and engine braking matter. Always verify the truck’s manufacturer towing chart and ensure it’s properly equipped for your trailer before towing.

Factory Tow Package, Hitch Class and GCWR: Factors That Affect 2020 Ram 1500 Classic SLT Towing Capacity

Factory tow package on the 2020 Ram 1500 Classic SLT is a key determinant of towing capacity because it bundles manufacturer-approved hardware and calibration designed to handle heavier loads. Typical inclusions are an upgraded hitch receiver, reinforced frame points, trailer wiring, a transmission cooler, and suspension or axle upgrades; these components work together to keep engine, transmission and brakes operating within safe limits while towing. Relying on the factory tow package ensures that the truck’s reported towing ratings reflect the actual installed equipment and calibrations intended by Ram.

Hitch class directly defines the towing and tongue weight limits at the connection point between the truck and trailer. The hitch’s class rating and the hitch’s own tongue weight capacity must meet or exceed the trailer’s gross trailer weight (GTW) and expected tongue weight. Even with a factory tow package, using an undersized or improperly installed hitch will lower safe towing capacity; conversely, simply bolting on a higher-rated aftermarket hitch does not change other limiting factors such as axle ratings, brakes or GCWR.

GCWR (Gross Combined Weight Rating) is the maximum allowable combined mass of the truck, passengers, cargo, fuel, and the trailer while loaded. GCWR is the ultimate ceiling for safe towing — you determine your allowable trailer weight by subtracting the truck’s loaded weight (curb weight plus payload) from the GCWR. Because payload (including passengers and cargo) directly reduces the margin available for trailer weight and tongue load, maximizing towing capacity requires accounting for all onboard weight and not exceeding published GCWR or axle ratings.

To safely determine what a 2020 Ram 1500 Classic SLT can tow, consult the vehicle’s certification label and owner’s manual for the exact factory tow package specifications, hitch class rating, and GCWR, and ensure trailer braking systems, weight-distributing hitches or sway control devices are used as required. Following those documented limits and using properly rated equipment preserves vehicle integrity and complies with manufacturer safety guidelines.

Payload vs Towing: How to Calculate Safe Tow Weight for Your 2020 Ram 1500 Classic SLT

Payload vs towing are often confused but both matter for safely hauling with a 2020 Ram 1500 Classic SLT. Payload is the total weight your truck can carry in and on the vehicle (passengers, cargo, tongue weight), while towing capacity or trailer weight refers to how much weight the truck can pull behind it. Because capacities vary by engine, axle ratio, cab and bed length, always verify the specific ratings for your Ram 1500 Classic SLT rather than relying on generic figures.

To calculate a safe tow weight start by finding the truck’s GVWR (Gross Vehicle Weight Rating) and GCWR (Gross Combined Weight Rating) on the door jamb sticker or in the owner’s manual. Determine your truck’s curb or dry weight (often in the manual or spec sheet) and calculate available payload as GVWR − curb weight. Remember: the tongue weight of a trailer is part of payload, so that reduces how much cargo and passengers you can carry while towing.

Next, estimate the maximum trailer weight using the formula Max Trailer Weight ≈ GCWR − curb weight − current cargo/passenger weight. Make sure the trailer’s tongue weight is within the recommended range (typically about 10–15% of trailer gross weight) and that the hitch, hitch class, and brake system are rated for the load. Do not exceed the lowest rating among the manufacturer’s towing capacity, the hitch receiver rating, and the trailer’s equipped brakes.

Practical steps include weighing your loaded truck and trailer at a public scale to confirm axle and tongue loads, factoring in roof racks or aftermarket accessories, and leaving a safety margin below published limits. Always consult the Ram owner’s manual and dealer for the exact ratings for your 2020 Ram 1500 Classic SLT and ensure proper tire pressure, suspension condition, and a functioning brake controller before towing.

Practical Towing Tips, Trailer Brake Requirements and Maintenance for the 2020 Ram 1500 Classic SLT

For owners of the 2020 Ram 1500 Classic SLT preparing to tow, start every trip with a thorough pre-tow inspection and by consulting the vehicle’s specifications. Verify the truck’s tow package, hitch rating and the recommended tongue weight and towing capacity in the owner’s manual — these limits depend on cab, bed and drivetrain configurations. Distribute cargo to maintain proper tongue weight, secure loose items in the bed, and use a weight-distributing hitch or sway control when towing heavier trailers to preserve handling and braking performance. Keep tire pressures (truck and trailer), mirrors, and trailer lighting checked before leaving and periodically during long hauls.

Trailer brake requirements vary by trailer weight and local regulations, so always confirm state and local laws before loading. Many trailers above a certain gross vehicle weight must have their own service brakes; for electric or hydraulic surge brakes, a compatible in-cab brake controller is essential for safe stopping. Ensure the Ram’s trailer wiring and 7-way connector (if equipped) are clean and functioning, pair the controller gain setting to the trailer’s braking responsiveness, and perform a bench and road test—apply the controller to confirm synchronized deceleration between truck and trailer.

Routine maintenance for the 2020 Ram 1500 Classic SLT and its trailer keeps towing performance reliable and safe. Regularly service the truck’s brake system, transmission cooler (if used frequently for towing), cooling system, and suspension components; towing increases stress on these systems and can accelerate wear. Inspect wheel bearings, lug nut torque, trailer brake shoes or pads, and the trailer’s electrical harness; grease trailer bearings as recommended, and replace any worn brake hardware. Adjust the in-cab brake controller gain after loading, and recheck it if trailer load changes.

Practical in-trip and post-trip practices protect equipment and extend service life: during long trips, stop to check hitch security, lights, tire temperatures and tongue weight; after towing, inspect brake linings, clean and dry connectors, and address any abnormal noises or vibrations immediately. Keep a dedicated towing toolkit, spare fuses, and a compatible spare tire for both truck and trailer, and schedule more frequent brake and transmission inspections if you tow routinely — these small steps preserve the 2020 Ram 1500 Classic SLT’s towing capability and safety.

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