The 2014 RAM Trucks 3500 SLT sits in the heavy-duty pickup market where towing, payload, and real-world durability matter as much as ride quality. In SLT trim, this truck could serve as a work-focused hauler, a long-distance tow rig, or a daily-driven heavy-duty platform depending on cab and drivetrain configuration. Tire fitment is not one-size-fits-all here, with 235/80R17, 275/70R18, and 285/60R20 radial sizes appearing across different 3500 SLT sub-models. That means the key decision is confirming the exact cab, drive layout, and wheel diameter first, then comparing available tire choices by series, sidewall presentation, and intended use.
Which Tire Size Is Right for The 2014 RAM Trucks 3500 SLT
Three primary tire sizes apply to the 2014 RAM Trucks 3500 SLT, and they do not all use the same wheel diameter. Fitment changes by sub-model, with 17-inch, 18-inch, and 20-inch wheel setups represented across the SLT range. Before choosing a tire, confirm the exact sub-model and the truck's current wheel diameter, especially if the truck has been changed from its original wheel package.
235/80R17 is a metric radial size with a 235-millimeter section width, an 80-series aspect ratio, radial construction, and a 17-inch rim diameter. On the 2014 RAM Trucks 3500 SLT, this size is used on dual-rear-wheel configurations, making it a fitment tied to a specific truck setup rather than the entire model line. Available choices in this size include BFGoodrich's All-Terrain T/A KO2 with an RBL sidewall treatment. This size should be evaluated when the truck is a DRW model and still uses the correct 17-inch wheel package.
Fit(s): 4x2 Crew Cab, 4x2 Mega Cab, 4x2 Reg. Cab, 4x4 Crew Cab, 4x4 Mega Cab, and 4x4 Reg. Cab
Construction: Radial|Rim: 18 in
275/70R18 is a metric radial size that pairs a 275-millimeter section width with a 70-series profile on an 18-inch wheel. It is one of the core fitments for the 2014 RAM Trucks 3500 SLT and appears across several regular cab, crew cab, and mega cab configurations. BFGoodrich offers this size in the All-Terrain T/A KO2 series with a raised white letter sidewall, giving buyers both a utility-minded tread style and a more distinctive sidewall look. This is the size to compare when the truck carries the 18-inch setup and the goal is to stay with that wheel diameter.
Fit(s): 4x2 Crew Cab, 4x2 Mega Cab, 4x4 Crew Cab, and 4x4 Mega Cab
Construction: Radial|Rim: 20 in
285/60R20 is a metric radial size with a 285-millimeter section width, a 60-series profile, and a 20-inch rim diameter. On the 2014 RAM Trucks 3500 SLT, it appears on certain crew cab and mega cab configurations, so it should not be assumed to apply to every SLT. Its lower-profile format compared with the 17-inch and 18-inch sizes makes wheel confirmation especially important before selection. This size is most relevant when the truck already wears the correct 20-inch wheels and the buyer wants to match that existing fitment path.
Tire fitment for the 2014 RAM Trucks 3500 SLT varies by sub-model, and several configurations share one size while others allow two wheel-and-tire combinations. Checking the exact cab style, drive layout, and whether the truck is a dual-rear-wheel model is the first step before comparing tire choices.
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2014 RAM Trucks 3500 SLT 4x2 (DRW)
The 2014 RAM Trucks 3500 SLT 4x2 (DRW) uses the 235/80R17 radial size. Tire selection for this sub-model starts with confirming the 17-inch dual-rear-wheel setup, then comparing available choices within that specific heavy-duty fitment.
The 2014 RAM Trucks 3500 SLT 4x2 Crew Cab can use either 275/70R18 or 285/60R20, depending on wheel configuration. The important step here is confirming whether the truck has the 18-inch or 20-inch setup before moving on to tread style, sidewall appearance, and other product differences.
The 2014 RAM Trucks 3500 SLT 4x2 Mega Cab also carries two possible tire sizes: 275/70R18 or 285/60R20. That makes wheel-diameter verification essential, especially on trucks that may have seen aftermarket wheel changes or package swaps over time.
The 2014 RAM Trucks 3500 SLT 4x2 Reg. Cab uses the 275/70R18 radial size. Tire selection is more straightforward here, since the main decision becomes choosing the right tire within that size for the truck's work, towing, and road-use priorities.
The 2014 RAM Trucks 3500 SLT 4x4 (DRW) uses the 235/80R17 radial fitment. Because this is tied to a dual-rear-wheel configuration, the focus should stay on the correct 17-inch setup and the truck's actual wheel arrangement before comparing tire options.
The 2014 RAM Trucks 3500 SLT 4x4 Crew Cab can use either 275/70R18 or 285/60R20. Choosing correctly starts with confirming which wheel package is on the truck now, then narrowing the search to tires that suit that rim diameter and intended use.
The 2014 RAM Trucks 3500 SLT 4x4 Mega Cab shares the two-size fitment pattern of 275/70R18 or 285/60R20. Buyers should verify the actual wheel diameter on the truck before assuming either size applies, particularly if the truck has been modified.
The 2014 RAM Trucks 3500 SLT 4x4 Reg. Cab uses 275/70R18. With the size established, the next step is comparing available tires in that fitment by load capability, series, sidewall style, and how the truck is expected to be used.
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 SLT Tires for Sale
Available products for the 2014 RAM Trucks 3500 SLT currently center on BFGoodrich All-Terrain T/A KO2 tires in 235/80R17 and 275/70R18. The main comparison points are wheel-size match, load capacity, rim-width compatibility, and sidewall presentation, with RBL and raised white letter styles both represented.
Owners researching 2014 RAM Trucks 3500 SLT tires usually need to sort out the correct size by sub-model and wheel diameter first. From there, the important questions turn to rim fitment, available tire choices, and the checks worth making before putting the truck back on the road.
Tire Size & Fitment
What tire size fits a 2014 RAM Trucks 3500 SLT?
The 2014 RAM Trucks 3500 SLT uses three possible radial tire sizes: 235/80R17, 275/70R18, and 285/60R20. The correct size depends on the exact sub-model, with dual-rear-wheel versions using 235/80R17, regular cab models using 275/70R18, and some crew cab and mega cab trucks using either 275/70R18 or 285/60R20 depending on wheel package.
The practical step is to match the tire size to the truck's actual configuration rather than the badge alone. Check whether the truck is DRW or single rear wheel, confirm cab style, and verify the wheel diameter currently on the truck before choosing a replacement tire.
What size rim does a 2014 RAM Trucks 3500 SLT use?
A 2014 RAM Trucks 3500 SLT can use 17-inch, 18-inch, or 20-inch rims, depending on sub-model and tire size. The 235/80R17 fitment uses a 17-inch rim, 275/70R18 uses an 18-inch rim, and 285/60R20 uses a 20-inch rim.
Rim diameter should be confirmed before anything else, because the three tire sizes are tied to three different wheel diameters. A truck may also have had wheels changed over time, so checking the actual wheel on the vehicle is more reliable than assuming every 3500 SLT uses the same setup.
Why does the 2014 RAM Trucks 3500 SLT have more than one tire size?
The 2014 RAM Trucks 3500 SLT covers several configurations, including dual-rear-wheel trucks, regular cab models, and crew cab or mega cab versions with different wheel packages. That is why the fitment range includes 235/80R17, 275/70R18, and 285/60R20 rather than a single universal size.
This matters because choosing by year and model alone can lead to the wrong tire. The right approach is to identify the exact sub-model and then confirm the wheel diameter already on the truck, especially when the truck could have factory package differences or later wheel changes.
Choosing the Right Tire
What should I consider when choosing a 275/70R18 tire for a 2014 RAM Trucks 3500 SLT?
Start with the basics: the truck must actually use the 275/70R18 size and still have the correct 18-inch wheels. In this fitment, BFGoodrich offers the All-Terrain T/A KO2 with a maximum load capacity of 3,640 lbs @ 80 psi, a raised white letter sidewall, and a recommended rim-width range of 7.0 to 9.0 inches.
After size match, compare the tire to how the truck is used. A heavy-duty pickup used for towing, hauling, or mixed on-road and off-road service benefits from checking load capacity, rim-width compatibility, and sidewall style so the tire suits both the truck's setup and the owner's priorities.
What sidewall styles are available for 2014 RAM Trucks 3500 SLT tires?
Two sidewall styles appear across the available 2014 RAM Trucks 3500 SLT products: RBL and RWL. The 235/80R17 BFGoodrich All-Terrain T/A KO2 uses an RBL sidewall, while the 275/70R18 version uses an RWL, or raised white letter, sidewall.
That means sidewall appearance can vary with tire size as well as product selection. Buyers who want a more understated truck presentation may prefer an RBL-style look, while a raised white letter sidewall creates a more visible performance-and-utility appearance, provided the tire size itself is correct for the truck.
What brands offer tires for the 2014 RAM Trucks 3500 SLT?
BFGoodrich is represented in the available products for the 2014 RAM Trucks 3500 SLT. Current options include BFGoodrich All-Terrain T/A KO2 tires in 235/80R17 and 275/70R18, both built as radial heavy-duty truck tires.
Brand is only one part of the decision on a truck like this. The more important step is to confirm the correct size and wheel diameter first, then compare the tire's series, sidewall style, rim-width specification, and load figure against how the truck is actually driven and worked.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2014 RAM Trucks 3500 SLT?
Yes, modifications can affect tire fitment on a 2014 RAM Trucks 3500 SLT. Wheel swaps, suspension changes, leveling or lift kits, and changes between 17-inch, 18-inch, or 20-inch wheel packages can all alter which tire size belongs on the truck and how much clearance is available.
A modified truck should be checked by its actual wheel diameter and physical clearances, not by trim name alone. Look at steering travel, suspension movement, rear-wheel arrangement on DRW models, and the wheel's width before assuming the original fitment path still applies.
What should I inspect before driving a 2014 RAM Trucks 3500 SLT on new tires?
Before driving on new tires, inspect the wheel size, wheel condition, valve stems, and the truck's overall clearance at the suspension and body. Tire pressure should be set correctly for the tire and application, and the tires themselves should be checked for proper seating, visible damage, and any early signs of air loss.
A heavy-duty truck also deserves a close look at load-carrying demands before road use. Make sure the chosen tire matches the truck's real-world job, and recheck pressures and clearances after the first miles, especially if the truck tows, hauls, or has had wheel or suspension changes.
How often should tires on a 2014 RAM Trucks 3500 SLT be inspected?
Tires on a 2014 RAM Trucks 3500 SLT should be inspected regularly, not only by mileage intervals. Heavy-duty trucks benefit from a visual check before longer drives and periodic close inspection for tread wear, cracking, cuts, bulges, punctures, and uneven wear that could point to alignment or suspension issues.
Trucks that sit for stretches between use still need attention, because age and storage conditions can matter as much as tread depth. Pressure loss, sidewall aging, and flat spotting are worth watching, particularly on a work truck or tow vehicle that may go from parked to heavily loaded service.
