The 2019 RAM Trucks 3500 sits in the modern heavy-duty pickup segment where towing, payload, and long-wheelbase stability matter as much as appearance. Buyers often approach this truck with a very practical tire question, because wheel and tire fitment changes noticeably across single-rear-wheel and dual-rear-wheel configurations as well as trim levels. Primary fitments here are radial, with 275/70R18, 285/60R20, and 235/80R17 all appearing on different versions of the 2019 RAM Trucks 3500. That makes the first step confirming the exact sub-model and wheel diameter before comparing available tire choices. Once that is settled, the decision becomes matching the truck's intended work, road use, and wheel setup to the correct size.
Which Tire Size Is Right for The 2019 RAM Trucks 3500
The 2019 RAM Trucks 3500 uses three primary tire sizes, and they do not apply across the board. Fitment varies by sub-model, with different trucks using 17-inch, 18-inch, or 20-inch wheels, so the first thing to confirm is the exact trim and whether the truck is a DRW configuration. Once that is clear, the real comparison is between the correct metric radial size, wheel compatibility, and the tire characteristics available within that fitment.
Fit(s): Big Horn, Laramie, Laramie Longhorn, SLT, and Tradesman
Construction: Radial|Rim: 18 in
275/70R18 is a metric radial size in which 275 identifies the nominal section width in millimeters, 70 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. On the 2019 RAM Trucks 3500, this size is one of the primary fits for certain single-rear-wheel trims and belongs on an 18-inch wheel. Available choices in this size include a BFGoodrich All Terrain TA KO2 with raised white letter sidewall treatment. This size makes sense when the truck already has the proper 18-inch wheel setup and the goal is to stay with the intended fitment for that configuration.
Fit(s): Big Horn, Laramie, Laramie Longhorn, Limited, and SLT
Construction: Radial|Rim: 20 in
285/60R20 is a metric radial size where 285 is the nominal section width in millimeters, 60 is the aspect ratio, R marks radial construction, and 20 identifies the wheel diameter in inches. For the 2019 RAM Trucks 3500, this size appears on specific single-rear-wheel trims that use 20-inch wheels rather than 18-inch or 17-inch setups. It represents a different wheel-and-tire package rather than a universal alternative for every 3500. This is the size to evaluate when the truck is already equipped with the correct 20-inch wheels and the sub-model calls for that fitment.
235/80R17 is a metric radial size with a 235-millimeter nominal section width, an 80-series profile, radial construction, and a 17-inch wheel diameter. On the 2019 RAM Trucks 3500, this fitment is used on the DRW versions, which makes it a configuration-specific tire rather than a general 3500 size. Available product choices include a BFGoodrich All Terrain TA KO2 with an RBL sidewall and a rim-width range suited to the 17-inch wheel package used with this setup. This size should be chosen only after confirming that the truck is one of the dual-rear-wheel sub-models designed around the 17-inch arrangement.
Tire fitment on the 2019 RAM Trucks 3500 depends heavily on the exact sub-model. Some trims use either 18-inch or 20-inch single-rear-wheel setups, while the DRW versions use 235/80R17, so identifying the truck correctly matters before comparing tires.
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2019 RAM Trucks 3500 Big Horn
The 2019 RAM Trucks 3500 Big Horn uses either 275/70R18 or 285/60R20, depending on the wheel package on the truck. Tire selection starts with confirming whether it has the 18-inch or 20-inch setup, then comparing products within that exact metric radial size.
The 2019 RAM Trucks 3500 Big Horn 4x2 (DRW) uses the 235/80R17 radial tire size. That makes the main decision staying with the correct 17-inch DRW fitment and choosing a tire that matches the truck's wheel specification and intended use.
The 2019 RAM Trucks 3500 Big Horn 4x4 (DRW) uses 235/80R17 radials. For this sub-model, the focus is less about choosing among multiple primary sizes and more about confirming the proper DRW wheel setup before selecting a tire in the correct size.
The 2019 RAM Trucks 3500 Laramie can use either 275/70R18 or 285/60R20, so tire fitment is tied to the wheel package rather than the trim name alone. Choosing correctly means verifying the installed wheel diameter first and then comparing the available tires in that exact size.
The 2019 RAM Trucks 3500 Laramie 4x2 (DRW) uses 235/80R17 radial tires. For this truck, staying with the DRW-specific fitment is the key step before looking at sidewall style, load specification, and other product details.
The 2019 RAM Trucks 3500 Laramie 4x4 (DRW) uses the 235/80R17 radial size. Tire selection should begin with the wheel and DRW configuration already on the truck, since this is a dedicated fitment rather than an interchangeable single-rear-wheel option.
The 2019 RAM Trucks 3500 Laramie Longhorn uses either 275/70R18 or 285/60R20. The right choice depends on which wheel package the truck carries, so the most important step is confirming the 18-inch or 20-inch setup before comparing tires.
The 2019 RAM Trucks 3500 Laramie Longhorn 4x2 (DRW) uses 235/80R17 radial tires. That keeps the fitment decision straightforward, with the main focus shifting to wheel compatibility and selecting a tire suited to the truck's work or road-use pattern.
The 2019 RAM Trucks 3500 Laramie Longhorn 4x4 (DRW) uses 235/80R17. For this sub-model, correct tire selection starts with the 17-inch DRW fitment, then moves to comparing the available tire's construction details and intended use characteristics.
The 2019 RAM Trucks 3500 Limited uses 285/60R20, making its fitment more straightforward than trims that appear with multiple wheel sizes. The practical decision here is selecting the right 20-inch radial tire for the truck's existing wheel package and use.
The 2019 RAM Trucks 3500 Limited 4x2 (DRW) uses 235/80R17 radial tires. Since this is a DRW-specific fitment, the important next step is confirming the truck's wheel setup and selecting within the proper 17-inch tire specification.
The 2019 RAM Trucks 3500 Limited 4x4 (DRW) uses 235/80R17. Tire selection is centered on maintaining the correct DRW-size fitment and checking that the wheel dimensions and overall setup still match that specification if the truck has been modified.
The 2019 RAM Trucks 3500 SLT can use either 275/70R18 or 285/60R20. That means the trim name alone is not enough for tire selection, and the installed wheel diameter should be confirmed before choosing a tire.
The 2019 RAM Trucks 3500 SLT 4x2 (DRW) uses the 235/80R17 radial size. With this sub-model, the fitment path is simpler: confirm the DRW wheel arrangement and select a tire built for that 17-inch specification.
The 2019 RAM Trucks 3500 SLT 4x4 (DRW) uses 235/80R17 radials. The main consideration is preserving the correct DRW fitment and checking wheel compatibility before settling on a particular tire within that size.
The 2019 RAM Trucks 3500 Tradesman uses 275/70R18. That gives this sub-model a single primary size, so the decision moves quickly from fitment to choosing an 18-inch radial tire that suits the truck's existing wheel package and use.
The 2019 RAM Trucks 3500 Tradesman 4x2 (DRW) uses 235/80R17 radial tires. Tire selection should stay centered on the proper 17-inch DRW setup, especially if the truck's wheels or suspension have been changed since new.
The 2019 RAM Trucks 3500 Tradesman 4x4 (DRW) uses 235/80R17. For this truck, the key is confirming the dedicated DRW configuration and selecting a tire that matches the wheel dimensions and intended operating demands.
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 2019 RAM Trucks 3500 Tires for Sale
Available products for the 2019 RAM Trucks 3500 center on BFGoodrich All Terrain TA KO2 offerings in 275/70R18 and 235/80R17. The product grid is most useful for comparing wheel-width compatibility, load specification, sidewall presentation such as RWL or RBL, and the correct size for the truck's exact configuration.
Questions around the 2019 RAM Trucks 3500 usually come down to exact tire size by sub-model, wheel diameter, DRW versus single-rear-wheel fitment, and how to compare the available radial tire choices before road use.
Tire Size & Fitment
What tire size fits a 2019 RAM Trucks 3500?
The 2019 RAM Trucks 3500 uses three primary tire sizes: 275/70R18, 285/60R20, and 235/80R17. These sizes are all radial, but they do not apply to every version of the truck. Single-rear-wheel trims may use either 18-inch or 20-inch wheel packages, while DRW sub-models use 235/80R17.
The right choice starts with identifying the exact sub-model and checking the truck's current wheel diameter. A 17-inch DRW setup, an 18-inch single-rear-wheel setup, and a 20-inch single-rear-wheel setup are different fitment situations, so the size should be matched to the truck's actual configuration before comparing products.
What size rim does a 2019 RAM Trucks 3500 use?
A 2019 RAM Trucks 3500 can use 17-inch, 18-inch, or 20-inch rims, depending on the sub-model and tire size. The 235/80R17 fitment uses a 17-inch wheel, 275/70R18 uses an 18-inch wheel, and 285/60R20 uses a 20-inch wheel.
That makes wheel diameter one of the first things to verify before ordering tires. Measuring the wheel or checking the existing tire size is especially important on trucks that may have changed wheels over time, because a 3500 wearing the wrong diameter tire for its wheel cannot be matched correctly by trim name alone.
Why does the 2019 RAM Trucks 3500 have more than one tire size?
The 2019 RAM Trucks 3500 has more than one tire size because fitment changes across its trim and wheel-package combinations. Some single-rear-wheel trucks use 275/70R18, some use 285/60R20, and the DRW versions use 235/80R17. Those are separate fitments tied to different configurations of the truck.
That means tire selection is not just a matter of year, make, and model. Checking whether the truck is DRW or single-rear-wheel, and confirming whether it has 17-inch, 18-inch, or 20-inch wheels, will narrow the search to the proper size and help avoid treating another 3500 setup as interchangeable.
Choosing the Right Tire
What should I consider when choosing a tire for a 2019 RAM Trucks 3500?
Start with the correct primary size for the truck's exact configuration: 275/70R18, 285/60R20, or 235/80R17. From there, compare the tire's construction, wheel-diameter match, rim-width compatibility, and load specification. On a heavy-duty pickup like the 3500, those basics matter more than simply choosing by appearance.
Intended use should guide the final decision. A truck used mainly for work, towing, or rural driving may call for a different tire character than one used mostly on pavement. It also helps to confirm whether the truck still has its original wheel setup, because aftermarket wheels can change the fitment requirements even when the tire size looks similar.
What brands offer tires for the 2019 RAM Trucks 3500?
BFGoodrich is represented in the available 2019 RAM Trucks 3500 tire options, including the All Terrain TA KO2 series in 275/70R18 and 235/80R17. Those are radial tires built around the truck's correct wheel diameters for the covered fitments rather than general one-size-fits-all replacements.
Brand matters most after the fitment is settled. A buyer should still confirm the exact tire size, wheel diameter, and whether the truck is a DRW or single-rear-wheel model before comparing brand-specific details. Once those points line up, product differences such as sidewall treatment and rim-width range become easier to evaluate.
What sidewall styles are available for 2019 RAM Trucks 3500 tires?
Available sidewall styles for the 2019 RAM Trucks 3500 include RWL and RBL, depending on the tire size. The 275/70R18 BFGoodrich option uses an RWL sidewall, while the 235/80R17 BFGoodrich option uses an RBL sidewall. Those sidewall details can change the truck's visual presentation even when the tire remains within the correct size.
Sidewall style should come after fitment, not before it. A raised white letter look may appeal on some single-rear-wheel trucks, while a more subdued black-letter presentation may suit others, but the wheel diameter and size still need to match the truck exactly. Appearance is a meaningful choice only after the correct tire specification is confirmed.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 RAM Trucks 3500?
Yes. Wheel changes, suspension modifications, leveling kits, lifts, and other alterations can affect tire fitment on a 2019 RAM Trucks 3500 even when the truck started with a factory-size tire. A change in wheel diameter or width can move the truck away from its original 275/70R18, 285/60R20, or 235/80R17 setup.
A modified truck should be checked for wheel diameter, wheel width, and clearance around suspension and body components before replacement tires are chosen. That is especially important on DRW models, where the correct configuration matters just as much as the printed size. Small-looking changes can create a very different fitment situation on a heavy-duty pickup.
What should I inspect before driving a 2019 RAM Trucks 3500 on new tires?
Before road use, inspect air pressure, bead seating, lug-nut torque, visible sidewall condition, and tread area for any shipping or installation damage. The tire should match the truck's wheel diameter and the correct 3500 fitment category, whether that is 235/80R17 for DRW or an 18-inch or 20-inch single-rear-wheel setup.
A short initial drive followed by a second check is a smart habit on a truck of this size. Recheck pressure and look for any signs of rubbing or uneven clearance at full steering lock. On a 3500 used for hauling or towing, it also makes sense to confirm that the selected tire's specifications align with the truck's real operating demands.
How often should tires on a 2019 RAM Trucks 3500 be inspected?
Tires on a 2019 RAM Trucks 3500 should be inspected regularly, not only when tread looks worn. A heavy-duty truck benefits from routine checks for pressure loss, irregular wear, cuts, punctures, sidewall damage, and any sign that the tire is no longer wearing evenly across the tread face.
Frequent inspection matters even more if the truck tows, carries heavy loads, or sits for stretches between uses. Looking over the tires before longer drives can catch aging, impact damage, or slow leaks early. Keeping the correct inflation level and watching for changes in handling can help protect both tire life and overall fitment stability.
