The 2013 RAM Trucks 3500 Laramie Longhorn sits at the heavy-duty end of the pickup market, blending serious towing and hauling capability with a more upscale trim presentation. On a truck like this, tire choice is tied as much to configuration as it is to appearance, because single-rear-wheel and dual-rear-wheel versions do not use the same size. Primary fitments include 275/70R18, 285/60R20, and 235/80R17 radial tires, depending on whether the truck is SRW or DRW and which wheel package it carries. Available choices also differ by sidewall treatment and rim-width specification. The right selection starts with confirming the exact sub-model and wheel diameter already on the truck.
Which Tire Size Is Right for The 2013 RAM Trucks 3500 Laramie Longhorn
Three tire sizes apply to the 2013 RAM Trucks 3500 Laramie Longhorn, and the correct one depends on the truck's exact sub-model and wheel setup. Both 4x2 and 4x4 single-rear-wheel trucks use either 275/70R18 or 285/60R20, while DRW models use 235/80R17. Confirming whether the truck is SRW or DRW, then checking wheel diameter, is the first step before comparing tire style, sidewall treatment, or rim-width compatibility.
275/70R18 is a metric radial size in which 275 is the nominal section width in millimeters, 70 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. On the 2013 RAM Trucks 3500 Laramie Longhorn, this size is used on single-rear-wheel 4x2 and 4x4 configurations rather than DRW models. Available choices in this size include BFGoodrich's All-Terrain T/A KO2 with raised white letter sidewalls. It is a useful size to evaluate when the truck already carries 18-inch wheels and needs a heavy-duty radial matched to that setup.
285/60R20 is a metric radial size with a 285-millimeter nominal section width, a 60-series profile, radial construction, and a 20-inch wheel diameter. This size is used on single-rear-wheel versions of the 2013 RAM Trucks 3500 Laramie Longhorn, so it belongs to trucks equipped with 20-inch wheels rather than the DRW configuration. Its lower-profile format relative to the 18-inch option makes wheel confirmation especially important before replacement. Buyers looking at this size should focus on maintaining the correct 20-inch fitment and matching the tire to the truck's actual wheel package and intended use.
235/80R17 is a metric radial size where 235 gives the nominal section width in millimeters, 80 is the aspect ratio, R indicates radial construction, and 17 identifies the wheel diameter in inches. On the 2013 RAM Trucks 3500 Laramie Longhorn, this size is used on dual-rear-wheel 4x2 and 4x4 models rather than single-rear-wheel trucks. Available product choice in this size includes the BFGoodrich All-Terrain T/A KO2 with an RBL sidewall. This is the size to evaluate when the truck is a DRW configuration and still uses its correct 17-inch wheel setup.
Sub-model fitment matters on the 2013 RAM Trucks 3500 Laramie Longhorn because single-rear-wheel and dual-rear-wheel trucks do not share the same tire size. The correct choice starts with confirming whether the truck is 4x2 or 4x4 and, just as importantly, whether it is SRW or DRW.
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2013 RAM Trucks 3500 Laramie Longhorn 4x2
The 4x2 single-rear-wheel version uses radial tire fitments associated with either the 18-inch or 20-inch wheel setup. Tire selection here centers on confirming which wheel diameter is on the truck, then comparing sidewall style, series, and other product details within that correct size.
The 4x2 DRW version uses the 235/80R17 radial fitment rather than the larger single-rear-wheel sizes. That makes wheel and configuration confirmation especially important, since a dual-rear-wheel truck should be matched to the proper 17-inch tire size before any product comparison begins.
The 4x4 single-rear-wheel version shares the same radial size pattern as the 4x2 SRW truck, using either the 18-inch or 20-inch fitment. The key decision is not construction type, but identifying the actual wheel package so the replacement tire matches the truck's existing setup.
The 4x4 DRW model uses the 235/80R17 radial size, separating it clearly from the single-rear-wheel trucks. For this sub-model, the practical focus is choosing a tire built for the existing 17-inch dual-rear-wheel arrangement and checking overall wheel condition before road use.
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 2013 RAM Trucks 3500 Laramie Longhorn Tires for Sale
Available product choices center on BFGoodrich All-Terrain T/A KO2 tires in the supported sizes, with differences that include sidewall treatment and rim-width range. For this truck, the product grid is most useful once the correct wheel diameter and SRW or DRW configuration are confirmed.
These FAQs focus on the exact tire sizes used on the 2013 RAM Trucks 3500 Laramie Longhorn, how sub-model and wheel choice affect fitment, and what to compare before putting the truck back on the road.
Tire Size & Fitment
What tire size fits a 2013 RAM Trucks 3500 Laramie Longhorn?
The 2013 RAM Trucks 3500 Laramie Longhorn uses three radial tire sizes: 275/70R18, 285/60R20, and 235/80R17. Single-rear-wheel 4x2 and 4x4 trucks use either 275/70R18 or 285/60R20, while dual-rear-wheel versions use 235/80R17.
The practical difference is that tire selection starts with truck configuration, not just the model name on the badge. Check whether the truck is SRW or DRW, then verify the wheel diameter already installed. That prevents choosing a correct-for-the-model size that is wrong for the truck's actual wheel and rear-wheel setup.
What size rim does a 2013 RAM Trucks 3500 Laramie Longhorn use?
Rim diameter depends on the tire size and configuration. The 275/70R18 fitment uses an 18-inch rim, the 285/60R20 fitment uses a 20-inch rim, and the 235/80R17 fitment uses a 17-inch rim on DRW versions.
That means there is no single rim size for every 2013 RAM Trucks 3500 Laramie Longhorn. The first check should be the wheel already on the truck, since tire size and rim diameter must match. On a truck that has been modified or had wheels changed, physical inspection matters more than assumptions based on trim alone.
Why does the 2013 RAM Trucks 3500 Laramie Longhorn have more than one tire size?
More than one tire size appears because the 2013 RAM Trucks 3500 Laramie Longhorn was offered in both single-rear-wheel and dual-rear-wheel form, and the single-rear-wheel trucks could also carry different wheel diameters. That creates separate fitments within the same model line.
The important takeaway is that the correct tire is tied to the truck's exact setup rather than the Laramie Longhorn name alone. A replacement decision should begin with the sub-model, then the wheel size, and then the tire itself. That approach is especially important on heavy-duty pickups where configuration changes affect fitment immediately.
Choosing the Right Tire
What should I consider when choosing a tire for a 2013 RAM Trucks 3500 Laramie Longhorn?
Start with the correct size for the truck's configuration: 275/70R18 or 285/60R20 for single-rear-wheel trucks, and 235/80R17 for dual-rear-wheel models. From there, compare radial construction details such as rim-width compatibility, sidewall style, tire series, load capacity, and overall intended use.
This truck's fitment decision is less about bias-ply versus radial and more about matching the actual wheel package and work role of the vehicle. A truck used for regular road miles, towing, or mixed surface driving may call for a different product emphasis than one kept closer to stock appearance, so compare specifications with that purpose in mind.
What sidewall styles are available for 2013 RAM Trucks 3500 Laramie Longhorn tires?
Available sidewall styles include RWL on the 275/70R18 BFGoodrich All-Terrain T/A KO2 and RBL on the 235/80R17 version of the same series. Those sidewall details change the truck's visual presentation even when the overall tire family remains similar.
For many buyers, sidewall style is an appearance decision after the correct size has been confirmed. Raised white letter sidewalls create a more assertive period-inspired truck look, while black sidewalls keep things more subdued. The right choice still has to begin with the proper fitment for the wheel diameter and SRW or DRW configuration.
What brands offer tires for the 2013 RAM Trucks 3500 Laramie Longhorn?
BFGoodrich is represented in the available product selection for this 2013 RAM Trucks 3500 Laramie Longhorn fitment range, including All-Terrain T/A KO2 options in supported sizes. The brand choice shown here is tied to specific size applications rather than a universal option across every wheel and configuration.
Brand comparison only matters after the fitment basics are settled. On this truck, the larger decision is whether the tire matches the installed 17-inch, 18-inch, or 20-inch wheel and whether the truck is single-rear-wheel or dual-rear-wheel. Once that is established, the remaining product details become much easier to compare sensibly.
Restoration & Appearance
Which tire should I choose for a period-style 2013 RAM Trucks 3500 Laramie Longhorn?
A period-style approach on a 2013 RAM Trucks 3500 Laramie Longhorn still begins with the correct modern radial size for the truck's exact configuration. That means 275/70R18 or 285/60R20 on single-rear-wheel trucks, or 235/80R17 on dual-rear-wheel versions, with the final look influenced by wheel package and sidewall treatment.
Because this is a modern heavy-duty pickup rather than an early collector car, appearance usually comes from keeping the proper stance and wheel-to-tire relationship intact. Buyers aiming for a more stock-looking presentation should confirm the existing wheel setup first, then choose a tire whose sidewall and overall character suit the truck without drifting from correct fitment.
How does tire construction affect the appearance of a restored 2013 RAM Trucks 3500 Laramie Longhorn?
On the 2013 RAM Trucks 3500 Laramie Longhorn, primary fitment is radial across all supported sizes, so construction does not create the old bias-ply-versus-radial visual contrast seen on earlier vehicles. Appearance changes come more from tire size, wheel diameter, and sidewall treatment than from a switch in construction type.
That makes visual consistency especially important when refreshing a truck for collector or presentation use. Keeping the correct 17-inch, 18-inch, or 20-inch fitment for the truck's actual configuration preserves proportion better than chasing a different look through an off-size tire. Sidewall treatment can then fine-tune the presentation without changing the underlying fitment logic.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2013 RAM Trucks 3500 Laramie Longhorn?
Yes. Wheel swaps, suspension changes, lifts, leveling kits, and other modifications can affect tire fitment on a 2013 RAM Trucks 3500 Laramie Longhorn even when the truck started with one of the correct factory-type sizes. Changes in wheel diameter or width can alter what size is actually appropriate.
A truck that now wears aftermarket wheels should be checked at the wheel itself before any replacement order is made. Look at the installed rim diameter, confirm width where possible, and inspect for clearance at steering lock and under load. That is especially important on a heavy-duty truck where SRW and DRW configurations already use different fitments.
What should I inspect before driving a 2013 RAM Trucks 3500 Laramie Longhorn on new tires?
Before road use, inspect wheel condition, confirm the tire size matches the truck's actual configuration, and make sure inflation is set appropriately for the tire and vehicle use. It is also smart to check for uneven wear patterns elsewhere on the truck that could point to alignment or suspension issues.
A fresh tire cannot correct problems caused by bent wheels, worn steering parts, or incorrect wheel selection. After installation, verify clearance through a full steering sweep on SRW trucks and inspect overall spacing carefully on DRW setups. A short road test followed by a visual recheck helps catch rubbing, air loss, or mounting concerns early.
How often should tires on a 2013 RAM Trucks 3500 Laramie Longhorn be inspected?
Tires on a 2013 RAM Trucks 3500 Laramie Longhorn should be inspected regularly, not just when tread looks low. A heavy-duty pickup benefits from routine checks for air pressure, cuts, punctures, irregular wear, bulges, and sidewall damage, especially if it sees towing, hauling, or long idle periods between drives.
A good habit is to look over the tires before longer trips and anytime the truck has been parked for an extended period. On low-use vehicles, age and condition matter as much as mileage. Catching a pressure loss or sidewall issue early is far easier than dealing with a tire problem once the truck is loaded and back on the road.
