The 2019 RAM Trucks 1500 arrived during a major transition for the full-size pickup, blending modern ride comfort and upscale trims with the everyday utility buyers still expect from a half-ton truck. That matters when choosing tires, because this model uses four different primary radial sizes depending on sub-model and wheel package: 275/65R18, 275/70R18, 275/55R20, and 285/45R22. The real decision starts with confirming the exact trim and wheel diameter, then narrowing the choice by the truck’s intended use. For buyers focused on available replacements here, the current product selection centers on BFGoodrich All-Terrain T/A KO2 options in 18-inch sizes with raised white letter styling.
Which Tire Size Is Right for The 2019 RAM Trucks 1500
The 2019 RAM Trucks 1500 uses four primary tire sizes, and the correct one depends on sub-model and wheel package. Because these fitments span 18-inch, 20-inch, and 22-inch rims, the first step is confirming the truck’s exact trim and actual wheel diameter before selecting a tire. That matters especially on trucks that may have been changed from their original wheel setup.
Fit(s): Big Horn 4x2, Big Horn 4x4, Laramie 4x2, Laramie 4x4, Laramie Longhorn, Limited, Lone Star 4x2, and Lone Star 4x4
Construction: Radial|Rim: 20 in
In 275/55R20, the 275 identifies section width in millimeters, 55 is the aspect ratio, R means radial construction, and 20 is the rim diameter in inches. This is a modern metric radial fitment used on certain 2019 RAM Trucks 1500 configurations with 20-inch wheels. It sits within the truck’s multi-size fitment range, so its role is tied more to wheel package than to a universal across-the-board application. It is the right size to evaluate when the truck already wears 20-inch wheels and the goal is to keep the existing rim diameter and overall fitment approach.
Fit(s): Big Horn 4x2, Big Horn 4x4, Laramie 4x2, Laramie 4x4, Lone Star 4x2, Lone Star 4x4, Tradesman 4x2, and Tradesman 4x4
Construction: Radial|Rim: 18 in
The 275/65R18 size uses a 275-millimeter section width, a 65-series profile, radial construction, and an 18-inch rim diameter. On the 2019 RAM Trucks 1500, this size appears across several sub-models, making it one of the more common 18-inch fitments in the lineup. Available product choice in this size includes a BFGoodrich All-Terrain T/A KO2 with raised white letter sidewalls, along with a 7.5 to 9.5 inch rim-width range. This size deserves close attention when keeping an 18-inch wheel setup and comparing road-use priorities with light off-road or all-terrain intentions.
Fit(s): Laramie 4x2, Laramie 4x4, Laramie Longhorn, and Limited
Construction: Radial|Rim: 22 in
A 285/45R22 tire has a 285-millimeter section width, a 45-series profile, radial construction, and fits a 22-inch rim. Within the 2019 RAM Trucks 1500 range, this size belongs to specific upper-trim wheel packages rather than to every version of the truck. Its lower-profile format makes wheel confirmation especially important, since moving between 22-inch and smaller-diameter wheel packages is not simply a matter of swapping tire sizes. This is the size to focus on when the truck retains its 22-inch setup and the owner wants to stay aligned with that larger-wheel appearance.
The 275/70R18 code indicates a 275-millimeter section width, a 70-series profile, radial construction, and an 18-inch rim diameter. For the 2019 RAM Trucks 1500, this size is used on the Rebel and carries a distinct fitment role within the lineup. Available product choice in this size includes a BFGoodrich All-Terrain T/A KO2 with raised white letter styling and a 7.0 to 9.0 inch rim-width range. It is the size to evaluate when the truck uses the Rebel’s 18-inch setup and the buyer wants an all-terrain-oriented tire in the proper fitment range.
Tire fitment on the 2019 RAM Trucks 1500 varies by sub-model and wheel package, not just by two-wheel-drive or four-wheel-drive layout. Checking the exact trim matters first, because this truck can use 18-inch, 20-inch, or 22-inch tire sizes depending on configuration.
1
2019 RAM Trucks 1500 Big Horn 4x2
The 2019 RAM Trucks 1500 Big Horn 4x2 uses either an 18-inch or 20-inch radial fitment, so tire choice starts with confirming which wheel package is on the truck. Once the wheel diameter is verified, the decision becomes selecting the right replacement within that size rather than choosing between unrelated fitments.
The Big Horn 4x4 shares the same two-size fitment pattern as the 4x2 version, with radial tires on either 18-inch or 20-inch wheels. That makes wheel confirmation the practical first step before comparing replacement tires or evaluating whether the truck still has its original wheel setup.
The 2019 RAM Trucks 1500 Laramie 4x2 spans three radial tire sizes, covering 18-inch, 20-inch, and 22-inch wheel packages. Tire selection for this sub-model depends on matching the truck’s actual wheel diameter first, then choosing the replacement style and use profile that fits that setup.
The Laramie 4x4 also uses multiple radial fitments across 18-inch, 20-inch, and 22-inch wheel packages. Because the range is broader than on many trims, the safest starting point is the current wheel and tire size on the truck rather than assuming one Laramie fitment applies to every 4x4.
The 2019 RAM Trucks 1500 Laramie Longhorn uses either a 20-inch or 22-inch radial tire size. That puts the emphasis on confirming wheel diameter before replacement, especially if appearance matters and the truck is being kept in a more upscale trim-specific presentation.
The Limited uses radial tires in either a 20-inch or 22-inch fitment depending on wheel package. Tire selection is therefore less about broad 1500 compatibility and more about preserving the exact wheel-and-tire combination already on the truck.
The Lone Star 4x2 uses one of two radial sizes tied to either 18-inch or 20-inch wheels. Verifying the wheel diameter first keeps the search focused and helps avoid confusion with other 1500 trims that use larger 22-inch packages.
The Lone Star 4x4 follows the same 18-inch or 20-inch radial fitment pattern as the 4x2 version. The practical takeaway is simple: identify the wheel package on the truck, then compare replacement tires within that exact size rather than across the full 1500 range.
The Rebel stands apart by using a single 275/70R18 radial fitment on an 18-inch wheel. That makes the size question straightforward, and the buyer’s focus can shift toward choosing an appropriate tire within that fitment, including available all-terrain-style options.
The 2019 RAM Trucks 1500 Tradesman 4x2 uses a single 275/65R18 radial tire size. With the fitment narrowed to one primary size, the main decision becomes selecting the right tire within that 18-inch application and confirming the truck has not been changed to a different wheel package.
The Tradesman 4x4 also uses a single 275/65R18 radial fitment. That keeps selection straightforward, but it is still smart to check the actual wheel on the truck before replacement, particularly on work-oriented pickups that may have seen aftermarket wheel or tire changes.
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 1500 Tires for Sale
Available product coverage for the 2019 RAM Trucks 1500 currently centers on 18-inch fitments. In 275/65R18 and 275/70R18, BFGoodrich All-Terrain T/A KO2 options are available with radial construction, raised white letter sidewalls, and application-specific rim-width ranges.
Owners of a 2019 RAM Trucks 1500 usually need to sort out trim-level fitment first, then compare wheel diameter, tire size, and available replacement styles. The questions below focus on size identification, product choice, and practical checks before road use.
Tire Size & Fitment
What tire size fits a 2019 RAM Trucks 1500?
The 2019 RAM Trucks 1500 uses four primary tire sizes: 275/65R18, 275/70R18, 275/55R20, and 285/45R22. All of them are radial sizes, but they do not apply across every trim in the lineup. The correct size depends on the truck’s exact sub-model and wheel package.
The most important next step is confirming the actual wheel diameter on the truck before choosing a replacement tire. A Big Horn, Laramie, Limited, Rebel, or Tradesman may not share the same fitment, and many trucks in this segment are later changed to aftermarket wheels. Matching the current wheel-and-tire setup is the practical starting point.
What size rim does a 2019 RAM Trucks 1500 use?
A 2019 RAM Trucks 1500 can use 18-inch, 20-inch, or 22-inch rims depending on sub-model and wheel package. The 275/65R18 and 275/70R18 fitments use 18-inch rims, the 275/55R20 fitment uses a 20-inch rim, and the 285/45R22 fitment uses a 22-inch rim.
Wheel diameter should be verified before anything else, especially when replacing only tires and keeping the existing wheels. It is also wise to check the wheel itself rather than relying only on trim name, since a used truck may have been upgraded, downsized, or fitted with a different package during its life.
Do all 2019 RAM Trucks 1500 sub-models use the same tire size?
No. Tire size varies across the 2019 RAM Trucks 1500 range. Tradesman models use 275/65R18, the Rebel uses 275/70R18, and other trims such as Big Horn, Lone Star, Laramie, Laramie Longhorn, and Limited can use different combinations of 18-inch, 20-inch, or 22-inch tire sizes.
That variation means trim identification matters before comparing tires. A replacement chosen for a Rebel’s 18-inch setup is not the same decision as one for a Limited on 22-inch wheels. Checking the truck’s sub-model, wheel diameter, and current tire sidewall avoids ordering by name alone and helps narrow the correct fitment quickly.
Choosing the Right Tire
What should I consider when choosing a tire for a 2019 RAM Trucks 1500?
Start with the truck’s exact tire size and wheel diameter, since the 2019 RAM Trucks 1500 uses several different radial fitments. After that, compare the tire’s intended use, construction details, load capacity, and wheel-width compatibility. Those factors matter more than trim name alone when narrowing the right replacement.
A work-oriented truck, an all-terrain-focused setup, and a larger-wheel appearance package may all point toward different priorities. The current product coverage here is centered on 18-inch BFGoodrich All-Terrain T/A KO2 options, so buyers using 275/65R18 or 275/70R18 can compare those details directly against the truck’s present wheel and usage needs.
What sidewall styles are available for 2019 RAM Trucks 1500 tires?
Among the currently available products for this application, the sidewall style offered is RWL, or raised white letter. That sidewall treatment appears on the BFGoodrich All-Terrain T/A KO2 options available in 275/65R18 and 275/70R18 for the 2019 RAM Trucks 1500.
Sidewall style influences appearance as much as fitment, so it helps to decide whether the truck is being kept in a more aggressive all-terrain look or a cleaner, less graphic presentation. Buyers should still confirm the tire size first, since sidewall style only matters after the correct 18-inch fitment has been matched to the truck.
What brands offer tires for the 2019 RAM Trucks 1500?
The currently available product selection for this application includes BFGoodrich. The brand appears in 18-inch RAM 1500 fitments through the All-Terrain T/A KO2 series, covering both 275/65R18 and 275/70R18 sizes within the truck’s broader range of primary tire sizes.
Brand is only one part of the decision. It is still important to compare the exact size, rim-width range, load capacity, and intended use of the tire against the truck’s setup. A 275/65R18 Tradesman or Big Horn replacement decision is different from a 275/70R18 Rebel decision, even when the same brand family is involved.
Restoration & Appearance
Which tire should I choose for a period-style 2019 RAM Trucks 1500?
A period-style approach on a 2019 RAM Trucks 1500 usually means staying with the truck’s original wheel diameter and primary tire size rather than changing to a different package. For this model year, that could mean 18-inch, 20-inch, or 22-inch radial fitment depending on the exact trim and equipment.
Appearance changes quickly when wheel diameter or tire profile changes, even if the truck remains mechanically usable. Buyers who want to preserve the model’s original-era presentation should verify the current setup against factory vehicle references, window-sticker information, or marque-specific documentation before moving to a different size or style.
Does correct tire fitment matter for a 2019 RAM Trucks 1500 restoration?
Yes. Correct tire fitment matters because the 2019 RAM Trucks 1500 was offered with multiple tire sizes tied to distinct wheel packages and trim levels. Using the wrong diameter, profile, or wheel pairing can change the truck’s stance, visual character, and the way a restoration-oriented build presents itself.
Fitment also affects practicality, since the truck’s wheel openings and wheel packages were designed around specific size ranges. A restoration-minded owner should confirm the sub-model, existing wheels, and current tire sidewall markings before replacement. That keeps the project aligned with the truck’s original-era configuration instead of blending unrelated trim-level setups.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 RAM Trucks 1500?
Yes. Modifications can affect tire fitment on a 2019 RAM Trucks 1500, especially when wheels, suspension height, or offset have been changed. Because this truck already spans 18-inch, 20-inch, and 22-inch factory-style fitments, an altered setup can make it harder to assume the current tire size still matches the original trim.
A truck with aftermarket wheels, leveling components, or suspension changes should be checked carefully before replacement. Verify the actual wheel diameter and width, then inspect clearance at the fender, steering range, and suspension travel. That is particularly important when moving between stock-style and all-terrain-oriented tire choices on 18-inch applications.
What should I inspect before driving a 2019 RAM Trucks 1500 on new tires?
Before road use, inspect tire pressure, wheel fastener torque, valve stems, and visible clearance around the suspension and fenders. It is also smart to confirm that all four tires match the intended size and that the new tire is mounted on the proper rim diameter for the truck’s 18-inch, 20-inch, or 22-inch setup.
A short initial drive followed by a recheck can catch rubbing, vibration, or air-loss issues early. On a truck that has seen previous wheel or suspension changes, inspect full steering travel and look for contact points under load. That extra check is worthwhile even when the tire size itself is correct for the model range.
How often should tires on a 2019 RAM Trucks 1500 be inspected?
Tires on a 2019 RAM Trucks 1500 should be inspected regularly, not just when tread looks worn. Pressure, tread wear pattern, cuts, bulges, and sidewall damage all deserve routine attention, especially on trucks used for towing, hauling, jobsite use, or mixed pavement-and-trail driving.
A monthly visual check is a sensible baseline, with added inspection before longer trips or heavier-duty use. Uneven wear can point to alignment, inflation, or suspension issues rather than a problem with the tire alone. Owners running 18-inch all-terrain tires should also watch for damage from debris or rough surfaces between normal service intervals.
