The 2015 Ram 1500 Crew Cab provides two distinct bed length options designed to balance passenger comfort with cargo utility: a 5-foot-7-inch short bed and a 6-foot-4-inch standard bed. While the 5'7" bed is the most common configuration for daily drivers, the 6'4" bed offers a significantly larger footprint for owners who prioritize hauling capacity without sacrificing the spacious four-door interior.
Understanding the 2015 Ram 1500 Crew Cab Configurations
In the 2015 model year, the Ram 1500 (part of the fourth-generation "DS" platform) was a leader in ride quality and interior ergonomics. The Crew Cab, characterized by its four full-sized, front-hinged doors and expansive rear legroom, was the flagship choice for families and work crews alike. However, choosing a Crew Cab necessitated a decision regarding the rear cargo area, as the bed length dictates the vehicle's overall wheelbase and maneuverability.
Unlike the Quad Cab, which was exclusively paired with the 6-foot-4-inch bed, the Crew Cab offered a choice. This flexibility allowed buyers to decide whether they wanted a truck that was easier to park in a suburban garage or one that could more easily accommodate construction materials or recreational gear like ATVs and motorcycles.
The 5-Foot-7-Inch Short Bed (Standard Crew Cab)
The 5-foot-7-inch bed is the "standard" configuration for the majority of 2015 Ram 1500 Crew Cabs found on the used market in 2026. It was designed primarily for the lifestyle user—someone who needs the utility of a truck but spends most of their time commuting or using the vehicle for family duties.
Dimensions and Specifications:
- Length: 67.4 inches
- Width (Wall to Wall): 66.4 inches
- Width (Between Wheel Wells): 51.0 inches
- Cargo Volume: Approximately 50.3 cubic feet
This bed length results in a 140.5-inch wheelbase. This shorter wheelbase is critical for drivers who frequent tight urban environments or have standard-depth residential garages. The total vehicle length with this bed is roughly 229 inches. While it is the "short" option, the 51-inch width between the wheel wells still allows for a standard 4x8 sheet of plywood to lie flat, though it will extend past the end of the bed onto the tailgate.
The 6-Foot-4-Inch Standard Bed (Longer Option)
Often referred to by enthusiasts as the "Long Box Crew Cab," the 6-foot-4-inch bed option was a significant upgrade for those who found the short bed too restrictive. It bridges the gap between a light-duty lifestyle truck and a dedicated work horse.
Dimensions and Specifications:
- Length: 76.3 inches
- Width (Wall to Wall): 66.4 inches
- Width (Between Wheel Wells): 51.0 inches
- Cargo Volume: Approximately 57.5 cubic feet
Opting for the 6'4" bed increases the wheelbase to 149.4 inches, adding nearly 9 inches to the truck's total length. This results in a total vehicle length of approximately 237.9 inches. For many owners, those extra 9 inches of bed floor are the difference between being able to close the tailgate on a load of gear and having to use tie-downs.
Technical Impact of Bed Length on Performance
Choosing between these two bed lengths is not merely a matter of cargo space; it fundamentally alters the mechanical behavior and physical requirements of the 2015 Ram 1500.
Wheelbase and Turning Radius
The most immediate difference a driver will notice is the turning circle. The 140.5-inch wheelbase (short bed) offers a tighter turning radius of approximately 39.5 feet. In contrast, the 149.4-inch wheelbase (6'4" bed) increases that radius to roughly 45.1 feet. This makes the longer configuration significantly more challenging to navigate in narrow parking lots or when performing U-turns on two-lane roads.
Stability and Towing
There is a trade-off in stability. A longer wheelbase generally provides a more stable towing platform. The 6'4" bed Crew Cab tends to track straighter on the highway when pulling a heavy trailer, as the increased distance between the front and rear axles reduces the "pitching" motion caused by road imperfections. However, the added weight of the longer frame and bed slightly reduces the maximum payload capacity compared to an identically equipped short-bed model.
Weight Distribution
The 2015 Ram 1500 utilized a unique-for-its-time coil-spring rear suspension (or optional air suspension). The longer bed shifts the center of gravity slightly and adds roughly 50 to 70 pounds of curb weight. While this doesn't drastically change the 0-60 mph times for the 5.7L HEMI V8 or the 3.0L EcoDiesel, it does influence the spring rates and damping required for a smooth ride.
Bed Features: The RamBox Cargo Management System
When discussing 2015 Ram bed options, one cannot overlook the RamBox Cargo Management System. This feature was available on both the 5'7" and 6'4" bed lengths for the Crew Cab.
The RamBox consists of lighted, drainable, and lockable storage bins integrated into the side rails of the pickup bed. While this is an invaluable feature for storing tools, tow straps, or even ice and drinks, it does affect the bed's interior dimensions. While the width between the wheel wells remains 51 inches (allowing for plywood sheets), the "wall-to-wall" width is reduced because the side walls are thickened to accommodate the bins.
If you are shopping for a 2015 model today, verify if the truck has the RamBox system, as it requires specific aftermarket accessories. A tonneau cover designed for a standard bed will not fit a RamBox-equipped bed.
2015 Ram 1500 Crew Cab Bed Comparison Table
The following table compares the essential metrics of the two bed configurations available for the 2015 Crew Cab.
| Feature | 5'7" Short Bed | 6'4" Standard Bed |
|---|---|---|
| Inside Bed Length | 67.4 inches (1,712 mm) | 76.3 inches (1,938 mm) |
| Wheelbase | 140.5 inches | 149.4 inches |
| Total Vehicle Length | 229.0 inches | 237.9 inches |
| Cargo Volume | 50.3 cu. ft. | 57.5 cu. ft. |
| Width Between Wheel Wells | 51.0 inches | 51.0 inches |
| Bed Depth | 20.1 inches | 20.1 inches |
| Approx. Turning Circle | 39.5 feet | 45.1 feet |
| Common Use Case | Daily driving, Family use | Heavy DIY, Light Commercial |
Trim Level Availability
In 2015, the availability of these bed lengths often depended on the trim level selected. The Ram 1500 was offered in several tiers, ranging from the work-oriented Tradesman to the luxury-focused Limited.
- Tradesman & Express: These entry-level trims often focused on utility. While both bed lengths were available, the 6'4" bed was a popular choice for fleet buyers.
- SLT & Big Horn / Lone Star: These mid-tier trims offered the most flexibility, with many dealer-stocked units featuring the 5'7" bed, though the 6'4" was a common special order or regional preference.
- Outdoorsman: Designed for hunters and fishermen, this trim frequently saw the 6'4" bed paired with the Crew Cab to accommodate more gear and outdoor equipment.
- Laramie, Laramie Longhorn, and Limited: As the luxury trims, these were most commonly paired with the 5'7" bed. The rationale was that buyers of these high-end trucks used them more for passenger transport than for heavy-duty hauling. Finding a 6'4" bed in a Limited trim is rarer and often commands a premium on the used market.
- Rebel: Introduced midway through the 2015 model year, the off-road-oriented Rebel was primarily sold with the 5'7" bed to maintain better breakover angles and maneuverability on trails.
Practical Considerations for the Used Market in 2026
If you are evaluating a 2015 Ram 1500 Crew Cab in 2026, the bed length should be one of your primary filters. Because these trucks are now over a decade old, certain factors regarding their configuration have become more prominent.
Garage and Driveway Fit
Before purchasing the 6'4" bed variant, measure your garage. Many modern suburban garages are roughly 20 to 22 feet deep (240 to 264 inches). While a 5'7" bed Crew Cab (229 inches) fits with room to spare, a 6'4" bed Crew Cab (237.9 inches) leaves less than three inches of clearance. This often forces owners to park the longer truck in the driveway, increasing exposure to the elements.
Aftermarket Accessory Availability
The 2015 Ram 1500 remains one of the most supported trucks in the aftermarket. However, you must be precise when ordering parts.
- Tonneau Covers: You must specify the bed length. A cover for a 5'7" bed will leave a massive gap on a 6'4" bed.
- Bed Liners: Drop-in liners are specific to the bed length and whether or not the truck has a RamBox.
- Side Steps: Because the wheelbase changes, the length of the frame-mounted side steps or "nerf bars" also changes. Side steps designed for the 140.5-inch wheelbase will look "short" and may not provide a step for the rear of the bed on the 149.4-inch wheelbase model.
Structural Integrity and Rust
When inspecting a 2015 model, check the bed supports and the area around the wheel arches. Regardless of length, the steel beds of this era are susceptible to corrosion in "salt belt" states. Ensure the bed bolts are secure, especially on the longer 6'4" bed, which can experience more torsional stress over time due to the longer frame.
FAQs
Can I fit an 8-foot bed on a 2015 Ram 1500 Crew Cab?
No. From the factory, the 8-foot "Long Box" was only available on the Regular Cab configuration. The frame of the 1500-series Crew Cab was not designed to accommodate the length of an 8-foot bed. If you require an 8-foot bed and a Crew Cab, you would typically need to move up to the Ram 2500 or 3500 Heavy Duty models.
Is the 6'4" bed much harder to drive than the 5'7" bed?
The primary difference is the turning radius. On the open highway, the 6'4" bed actually feels slightly more composed. However, in cities or tight parking structures, the extra 9 inches of wheelbase make a noticeable difference. Drivers used to smaller vehicles may find the "Long Box" Crew Cab cumbersome until they get used to taking wider turns.
Does the bed length affect fuel economy on the 2015 Ram 1500?
The impact is negligible. While the 6'4" bed and the associated longer frame add approximately 50-70 pounds to the vehicle's curb weight, this is a minor fraction of the truck's total weight (which ranges from 5,000 to 5,800 lbs). Aerodynamics are virtually identical between the two. Your choice of engine (3.6L V6, 5.7L V8, or 3.0L Diesel) and axle ratio will have a far greater impact on MPG.
Which bed length is better for resale value?
In 2026, the 6'4" bed Crew Cab often holds a slight value premium because it is rarer. Many buyers in the used market are looking for maximum utility, and the "Long Box Crew Cab" is highly sought after by those who want the best of both worlds: a huge interior and a functional bed.
Are the tailgates interchangeable between the two bed lengths?
Yes. The tailgate design for the 2015 Ram 1500 is consistent across all bed lengths (5'7", 6'4", and 8'). The only variation is whether the tailgate is equipped with the backup camera (standard on higher trims) and whether it has the locking mechanism integrated into the central locking system.
Choosing the Right Configuration
When deciding between the 2015 Ram 1500 Crew Cab bed options, the choice ultimately comes down to your primary use case.
If your truck serves as a primary family vehicle and your "hauling" consists of groceries, occasional camping gear, or a few bags of mulch, the 5-foot-7-inch bed is the superior choice. Its shorter footprint makes it significantly more livable in day-to-day scenarios, especially when navigating school drop-off lines or grocery store parking lots.
However, if you are a weekend warrior or a contractor who frequently hauls lumber, ladders, or large equipment, the 6-foot-4-inch bed is worth the extra effort required to park it. The additional 7.2 cubic feet of volume and the extra 9 inches of floor length provide a level of utility that the short bed simply cannot match. Before finalizing a purchase, ensure you have physically measured your intended parking space to accommodate the nearly 20-foot total length of the longer configuration.
