The 2014 RAM Trucks 3500 Big Horn sits in the heavy-duty pickup market where towing, hauling, and day-to-day road use all place real demands on tire choice. On a truck like this, tire selection is not just about appearance or brand preference; it starts with confirming the exact wheel and axle configuration. This model uses radial tire fitments in 17-, 18-, and 20-inch sizes, and the correct size changes between single-rear-wheel and dual-rear-wheel versions. Available choices include BFGoodrich All-Terrain T/A KO2 options in the supported sizes, with sidewall presentation varying by fitment. The right decision comes from matching the truck's exact sub-model, wheel diameter, and intended use.
Which Tire Size Is Right for The 2014 RAM Trucks 3500 Big Horn
Three primary tire sizes apply to the 2014 RAM Trucks 3500 Big Horn, and the right one depends on the exact sub-model and wheel diameter. Single-rear-wheel 4x2 and 4x4 trucks use 18-inch or 20-inch fitments, while dual-rear-wheel versions use a 17-inch size. Before choosing a tire, confirm whether the truck is SRW or DRW and verify the wheel diameter currently on the vehicle.
The size 275/70R18 is a modern metric radial format: 275 is the nominal section width in millimeters, 70 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2014 RAM Trucks 3500 Big Horn, this size belongs to single-rear-wheel configurations rather than DRW trucks. In this size, BFGoodrich offers the All-Terrain T/A KO2 with a raised white letter sidewall and a 7.0- to 9.0-inch rim-width range. It is a useful choice when the truck is equipped with 18-inch wheels and the goal is to stay with the proper radial fitment for that setup.
The size 285/60R20 also uses the modern metric radial system, with 285 indicating nominal section width in millimeters, 60 showing the profile ratio, and 20 identifying the wheel diameter in inches. This fitment applies to single-rear-wheel 2014 RAM Trucks 3500 Big Horn configurations and should not be treated as a universal size across all versions of the truck. Its lower-profile 20-inch format creates a different fitment path than the 18-inch option, so wheel diameter confirmation matters first. This size is the one to evaluate when the truck already carries 20-inch wheels and the objective is to match that existing setup correctly.
The size 235/80R17 is another modern metric radial, with a 235-millimeter nominal section width, an 80-series profile, and a 17-inch rim diameter. On the 2014 RAM Trucks 3500 Big Horn, this size is used on dual-rear-wheel configurations, making it a fitment tied to the truck's DRW setup rather than its non-dually versions. BFGoodrich offers the All-Terrain T/A KO2 in this size with a black sidewall treatment and a 6.0- to 7.5-inch rim-width range. It is the size to focus on when the truck's wheel and axle arrangement call for the 17-inch DRW fitment.
Sub-model fitment matters on the 2014 RAM Trucks 3500 Big Horn because tire size changes with both drivetrain and rear-wheel configuration. The first step is confirming whether the truck is 4x2 or 4x4, and just as important, whether it is single-rear-wheel or dual-rear-wheel.
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2014 RAM Trucks 3500 Big Horn 4x2
The 2014 RAM Trucks 3500 Big Horn 4x2 uses single-rear-wheel radial fitments in either 275/70R18 or 285/60R20, depending on the wheel package on the truck. Tire selection starts with verifying the current wheel diameter, then comparing the available tire's sidewall style, series, and rim-width compatibility.
The 2014 RAM Trucks 3500 Big Horn 4x2 (DRW) uses the 235/80R17 radial size rather than the larger single-rear-wheel fitments. That makes axle configuration the key factor, and tire selection should stay focused on the 17-inch dually setup before comparing tread style or other product details.
The 2014 RAM Trucks 3500 Big Horn 4x4 uses the same single-rear-wheel radial size choices as the 4x2 version: 275/70R18 or 285/60R20. The practical decision is confirming which wheel diameter is actually on the truck, then choosing a tire that matches that setup and intended use.
The 2014 RAM Trucks 3500 Big Horn 4x4 (DRW) uses the 235/80R17 radial fitment associated with the truck's dual-rear-wheel configuration. Tire choice here is less about multiple primary sizes and more about staying with the correct 17-inch dually fitment and confirming wheel compatibility.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2014 RAM Trucks 3500 Big Horn Tires for Sale
Available tire choices for the 2014 RAM Trucks 3500 Big Horn center on BFGoodrich All-Terrain T/A KO2 fitments in 17-inch and 18-inch sizes. The product grid highlights differences in sidewall treatment, load capacity, weight, and approved rim-width range within the correct size.
Common questions for the 2014 RAM Trucks 3500 Big Horn usually come down to identifying the correct tire size by sub-model, confirming wheel diameter, and understanding how available radial choices relate to the truck's intended use and setup.
Tire Size & Fitment
What tire size fits a 2014 RAM Trucks 3500 Big Horn?
The 2014 RAM Trucks 3500 Big Horn uses three primary tire sizes: 275/70R18, 285/60R20, and 235/80R17. The 275/70R18 and 285/60R20 sizes apply to single-rear-wheel 4x2 and 4x4 trucks, while 235/80R17 is used on dual-rear-wheel versions.
The correct choice depends on more than model name alone. A Big Horn can have different wheel diameters and a different rear-wheel configuration, so the safest starting point is to confirm whether the truck is SRW or DRW and then verify the actual wheel size before selecting a tire.
What size rim does a 2014 RAM Trucks 3500 Big Horn use?
A 2014 RAM Trucks 3500 Big Horn may use 17-inch, 18-inch, or 20-inch rims, depending on the exact sub-model and tire size. The 235/80R17 fitment uses a 17-inch rim, the 275/70R18 fitment uses an 18-inch rim, and the 285/60R20 fitment uses a 20-inch rim.
Wheel diameter is the first fitment check because each tire size is built around a specific rim size. It is also worth confirming the truck's current wheel setup if it has been changed over time, since aftermarket wheels or take-off sets can make the installed size differ from the original configuration.
Why does the 2014 RAM Trucks 3500 Big Horn have more than one tire size?
The 2014 RAM Trucks 3500 Big Horn has more than one tire size because fitment changes with wheel package and rear-wheel configuration. Single-rear-wheel trucks use either 275/70R18 or 285/60R20, while dual-rear-wheel trucks use 235/80R17.
That means the right tire is tied to how the truck is equipped, not just the badge on the fender. Checking the exact sub-model, confirming whether the truck is a dually, and measuring the wheel diameter on the vehicle will narrow the choice quickly and prevent selecting the wrong fitment.
Choosing the Right Tire
What should I consider when choosing a tire for a 2014 RAM Trucks 3500 Big Horn?
Start with the correct primary size for the truck's exact configuration: 275/70R18, 285/60R20, or 235/80R17. From there, compare practical factors such as radial construction, approved rim width, load capacity at the stated pressure, tire weight, and how the tread and sidewall style suit the truck's intended use.
A heavy-duty pickup places real demands on tires, so matching the tire to the truck's wheel and axle setup matters more than choosing by appearance alone. It also helps to think about whether the truck is used mainly for towing, work duty, or mixed road use before narrowing the options in the correct size.
What sidewall styles are available for 2014 RAM Trucks 3500 Big Horn tires?
Sidewall style varies by size on the 2014 RAM Trucks 3500 Big Horn. The available 275/70R18 BFGoodrich All-Terrain T/A KO2 uses an RWL sidewall, while the 235/80R17 version uses an RBL sidewall.
That difference can matter if the truck's appearance is part of the decision as well as its working role. Once the correct size is confirmed, sidewall treatment becomes a secondary way to narrow the tire choice, especially if the truck already has a particular look or wheel style that the owner wants to preserve.
What brands offer tires for the 2014 RAM Trucks 3500 Big Horn?
BFGoodrich is represented in the available tire selection for the 2014 RAM Trucks 3500 Big Horn, with All-Terrain T/A KO2 offerings in supported sizes. The product selection here is centered on radial truck fitments rather than a mix of vintage-style constructions or multiple competing tire families.
That makes the comparison more about choosing the right size and specification within the available BFGoodrich lineup than sorting through many brand alternatives. Rim-width compatibility, sidewall style, weight, and stated load capacity are the details worth comparing once the truck's exact wheel and sub-model configuration are confirmed.
Restoration & Appearance
Which tire should I choose for a period-style 2014 RAM Trucks 3500 Big Horn?
A period-style approach on a 2014 RAM Trucks 3500 Big Horn still starts with the correct original fitment category for the truck's configuration. That means staying with the proper radial size for the wheel and axle setup, whether that is 275/70R18, 285/60R20, or 235/80R17.
Because this is a modern heavy-duty pickup rather than an early collector car, the visual decision usually comes down to wheel package and sidewall presentation more than vintage construction style. Keeping the correct size and wheel diameter in place will preserve the truck's stance and overall presentation far better than forcing an unrelated tire format.
Does correct tire fitment matter for a 2014 RAM Trucks 3500 Big Horn restoration?
Correct tire fitment matters because it affects both how a 2014 RAM Trucks 3500 Big Horn looks and how it carries itself on the road. Using the proper size for the truck's SRW or DRW setup helps maintain the intended relationship between wheel diameter, sidewall profile, and overall stance.
A restoration-oriented truck can lose some of its authenticity if the wheel and tire package no longer matches the configuration it was built around. Even on a newer heavy-duty model, confirming the original wheel setup and then matching the tire size to that setup is a sound way to keep the finished truck visually coherent.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2014 RAM Trucks 3500 Big Horn?
Yes, modifications can affect tire fitment on a 2014 RAM Trucks 3500 Big Horn. Changes such as aftermarket wheels, different wheel offsets, suspension lifts or lowering, and conversions between wheel packages can all change how a 275/70R18, 285/60R20, or 235/80R17 tire sits in the wheel opening.
Any time the truck has been altered from its original setup, it is worth rechecking wheel diameter, wheel width, clearance at full steering lock, and space around suspension and body components. On DRW trucks, the exact wheel arrangement matters even more, since dual-wheel spacing is part of the fitment picture.
What should I inspect before driving a 2014 RAM Trucks 3500 Big Horn on new tires?
Before road use, inspect tire pressure, lug hardware, tread and sidewall condition, and the wheel itself for damage or distortion. It is also smart to confirm that the tires match the truck's correct size and that any stated load capacity aligns with how the truck will actually be used.
A short visual check can prevent bigger problems on a heavy-duty pickup. Look for uneven clearance, rubbing marks, air loss, or signs that the wheel width is mismatched to the tire, and pay attention to suspension or steering wear that could affect how the new tires behave once the truck is back on the road.
How often should tires on a 2014 RAM Trucks 3500 Big Horn be inspected?
Tires on a 2014 RAM Trucks 3500 Big Horn should be inspected regularly, not only when wear becomes obvious. A heavy-duty truck benefits from routine checks for tread depth, irregular wear, cuts, bulges, cracking, and any sign of pressure loss, especially if it sees towing, hauling, or long idle periods.
Frequent inspections help catch fitment or maintenance issues early, particularly on a truck that may carry significant loads. It also helps to recheck pressures and general condition before longer trips, after seasonal storage, or anytime the truck has had wheel, suspension, or brake work that could influence tire wear or clearance.
