2020 RAM Trucks 3500 Tires

The 2020 RAM Trucks 3500 sits squarely in the modern heavy-duty pickup world, built for serious payload, towing, and work-truck use while still spanning trim levels from straightforward commercial configurations to more upscale versions. Tire selection on this truck is driven first by configuration, because the 3500 uses three different primary radial sizes: 235/80R17, 275/70R18, and 285/60R20. That means the real choice is not just brand or tread style, but confirming the exact sub-model and wheel diameter before moving forward. Once that is sorted out, the decision becomes matching the truck's intended use, appearance, and load demands to the correct tire size and wheel setup.

Which Tire Size Is Right for The 2020 RAM Trucks 3500

The 2020 RAM Trucks 3500 uses three primary tire sizes, and they are tied to specific sub-models and wheel diameters rather than being interchangeable across the full lineup. Before selecting a tire, confirm the exact trim and whether the truck is using a 17-inch, 18-inch, or 20-inch wheel, since that determines whether the correct size is 235/80R17, 275/70R18, or 285/60R20.

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275/70R18Metric radial
Fit(s): Big Horn, Laramie, Laramie Longhorn, and Tradesman
Construction: RadialRim: 18 in

The 275/70R18 size uses a modern metric format: 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 2020 RAM Trucks 3500, this size serves as one of the standard single-rear-wheel fitments and suits trucks running 18-inch wheels. The available option in this size is a BFGoodrich All-Terrain T/A KO2 with a raised white letter sidewall. This size is the right place to start when the truck is equipped with 18-inch wheels and the goal is maintaining the intended wheel diameter and overall stance.

Explore 275/70R18 Tires
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285/60R20Metric radial
Fit(s): Big Horn, Laramie, Laramie Longhorn, and Limited
Construction: RadialRim: 20 in

The 285/60R20 code follows the same metric radial system, with a 285-millimeter nominal section width, a 60-series profile, radial construction, and a 20-inch rim diameter. On the 2020 RAM Trucks 3500, this size is used on selected non-DRW sub-models that run factory-style 20-inch wheel fitment. Its lower-profile shape relative to the 18-inch and 17-inch options makes wheel confirmation especially important before replacement. This is the size to evaluate when the truck already has 20-inch wheels and the goal is preserving the proper fitment category for that configuration.

Explore 285/60R20 Tires
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235/80R17Metric radial
Fit(s): Big Horn 4x2 (DRW), Big Horn 4x4 (DRW), Laramie 4x2 (DRW), Laramie 4x4 (DRW), Laramie Longhorn 4x2 (DRW), Laramie Longhorn 4x4 (DRW), Limited 4x2 (DRW), Limited 4x4 (DRW), Tradesman 4x2 (DRW), and Tradesman 4x4 (DRW)
Construction: RadialRim: 17 in

In 235/80R17, the 235 identifies nominal section width in millimeters, 80 is the aspect ratio, R denotes radial construction, and 17 is the wheel diameter in inches. This size is used on the dual-rear-wheel 2020 RAM Trucks 3500 sub-models, making it a configuration-specific fitment rather than a general size across the range. The available BFGoodrich All-Terrain T/A KO2 in this size uses a black sidewall presentation and is built for a 17-inch wheel. It is the right size to consider when replacing tires on a DRW truck and matching the existing wheel setup.

Explore 235/80R17 Tires

2020 RAM Trucks 3500 Sub-Model Tires

Sub-model fitment on the 2020 RAM Trucks 3500 varies by trim and wheel setup, with single-rear-wheel trucks using 18-inch or 20-inch fitments and DRW versions using a 17-inch tire size. Checking the exact sub-model matters because tire selection starts with confirming whether the truck is a standard rear-wheel or dual-rear-wheel configuration.

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2020 RAM Trucks 3500 Big Horn

The 2020 RAM Trucks 3500 Big Horn uses either an 18-inch or 20-inch radial fitment, so wheel diameter must be confirmed before choosing a replacement tire. Once the wheel size is verified, the decision shifts to selecting the correct metric radial size for the truck's current setup.

Associated Tire Sizes
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2020 RAM Trucks 3500 Big Horn 4x2 (DRW)

The 2020 RAM Trucks 3500 Big Horn 4x2 (DRW) uses the 235/80R17 radial size associated with the dual-rear-wheel configuration. Tire selection here is more straightforward, but it is still important to stay with the correct 17-inch fitment for the truck's existing wheel arrangement.

Associated Tire Sizes
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2020 RAM Trucks 3500 Big Horn 4x4 (DRW)

The 2020 RAM Trucks 3500 Big Horn 4x4 (DRW) uses 235/80R17 radial tires as its primary fitment. That keeps the focus on choosing the right tire within that size rather than sorting through multiple wheel diameters.

Associated Tire Sizes
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2020 RAM Trucks 3500 Laramie

The 2020 RAM Trucks 3500 Laramie can use either 275/70R18 or 285/60R20, depending on the wheel setup on the truck. Confirming the actual rim diameter is the first step before comparing tire options or replacing the existing set.

Associated Tire Sizes
5

2020 RAM Trucks 3500 Laramie 4x2 (DRW)

The 2020 RAM Trucks 3500 Laramie 4x2 (DRW) uses the 235/80R17 radial size. For this configuration, the main concern is choosing a tire that matches the 17-inch DRW setup rather than sorting among multiple primary sizes.

Associated Tire Sizes
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2020 RAM Trucks 3500 Laramie 4x4 (DRW)

The 2020 RAM Trucks 3500 Laramie 4x4 (DRW) is fitted with 235/80R17 radial tires. That makes tire replacement more focused, with attention centered on the correct size, wheel compatibility, and the demands of a dual-rear-wheel truck.

Associated Tire Sizes
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2020 RAM Trucks 3500 Laramie Longhorn

The 2020 RAM Trucks 3500 Laramie Longhorn uses either 275/70R18 or 285/60R20, so the truck's actual wheel diameter determines the correct replacement size. Tire shopping should begin at the wheel, not the trim badge alone, because both primary sizes are used on this sub-model.

Associated Tire Sizes
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2020 RAM Trucks 3500 Laramie Longhorn 4x2 (DRW)

The 2020 RAM Trucks 3500 Laramie Longhorn 4x2 (DRW) uses 235/80R17 radial tires. That narrows the search quickly, with the priority being a proper 17-inch DRW-compatible tire choice for the truck's existing configuration.

Associated Tire Sizes
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2020 RAM Trucks 3500 Laramie Longhorn 4x4 (DRW)

The 2020 RAM Trucks 3500 Laramie Longhorn 4x4 (DRW) uses the 235/80R17 radial size. Tire selection is therefore centered on the correct DRW fitment and the product characteristics available in that size.

Associated Tire Sizes
10

2020 RAM Trucks 3500 Limited

The 2020 RAM Trucks 3500 Limited uses the 285/60R20 radial size on a 20-inch wheel. For this sub-model, the fitment path is straightforward as long as the truck remains on its existing 20-inch wheel setup.

Associated Tire Sizes
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2020 RAM Trucks 3500 Limited 4x2 (DRW)

The 2020 RAM Trucks 3500 Limited 4x2 (DRW) uses 235/80R17 radial tires. Replacement decisions here focus on staying with the correct 17-inch dual-rear-wheel fitment and comparing available tire characteristics within that size.

Associated Tire Sizes
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2020 RAM Trucks 3500 Limited 4x4 (DRW)

The 2020 RAM Trucks 3500 Limited 4x4 (DRW) uses the 235/80R17 radial size. That means tire selection begins with the DRW wheel package and then moves to the available tire style and specification in that exact size.

Associated Tire Sizes
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2020 RAM Trucks 3500 Tradesman

The 2020 RAM Trucks 3500 Tradesman uses 275/70R18 radial tires as its primary fitment. For this sub-model, choosing the right tire starts with the 18-inch wheel and then narrows to the available tire option in that size.

Associated Tire Sizes
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2020 RAM Trucks 3500 Tradesman 4x2 (DRW)

The 2020 RAM Trucks 3500 Tradesman 4x2 (DRW) uses 235/80R17 radial tires. Tire replacement is therefore centered on matching the 17-inch DRW setup and confirming the wheel arrangement has not been changed from stock-type sizing.

Associated Tire Sizes
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2020 RAM Trucks 3500 Tradesman 4x4 (DRW)

The 2020 RAM Trucks 3500 Tradesman 4x4 (DRW) uses the 235/80R17 radial fitment. That keeps the tire decision focused on the proper DRW size and on verifying wheel compatibility before installation.

Associated Tire Sizes

Important Fitment Notes

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:

  • Wheel modifications (wider rims, offset changes, aftermarket wheels)
  • 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 2020 RAM Trucks 3500 Tires for Sale

Available tire choices for the 2020 RAM Trucks 3500 currently center on BFGoodrich All-Terrain T/A KO2 products in 275/70R18 and 235/80R17. The main visible differences are size, wheel-fit range, sidewall treatment, load capacity, and the single-rear-wheel versus DRW application.

Showing 2 of 2
Radial BFG KO2

BFG All-Terrain T/A KO2 | 275/70R18 125/122R

BFGoodrich - All Terrain TA KO2

SIDEWALLRWL
RIM DIAMETER18 in
RIM WIDTH7.0 - 9.0 in
WEIGHT59 lb
MAX LOAD3,640 lbs @ 80 psi
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Radial BFG KO2

BFG All-Terrain T/A KO2 | LT235/80R17/E

BFGoodrich - All Terrain TA KO2

SIDEWALLRBL
RIM DIAMETER17 in
RIM WIDTH6.0 - 7.5 in
WEIGHT47 lb
MAX LOAD3,085 lbs @ 80 psi
Buy Now

Frequently Asked Questions

These FAQs focus on the exact tire sizes used on the 2020 RAM Trucks 3500, how those sizes vary by sub-model and wheel diameter, and what to check when comparing available tires for work, towing, and everyday road use.

Tire Size & Fitment

What tire size fits a 2020 RAM Trucks 3500?

The 2020 RAM Trucks 3500 uses three primary tire sizes: 275/70R18, 285/60R20, and 235/80R17. The correct one depends on the truck's exact sub-model and wheel setup, with dual-rear-wheel versions using 235/80R17 and single-rear-wheel trims using either 275/70R18 or 285/60R20.

The practical first step is checking the truck itself rather than assuming every 3500 uses the same tire. Wheel diameter determines the basic size category, and DRW versus non-DRW configuration matters just as much. If the truck has had aftermarket wheels installed, confirm the actual wheel dimensions before choosing a replacement tire.

What size rim does a 2020 RAM Trucks 3500 use?

A 2020 RAM Trucks 3500 can use 17-inch, 18-inch, or 20-inch rims depending on configuration. The 235/80R17 size uses a 17-inch rim, 275/70R18 uses an 18-inch rim, and 285/60R20 uses a 20-inch rim.

Rim diameter is the first fitment detail to verify because it determines which tire size family even belongs on the truck. A 17-inch DRW setup is not the same as an 18-inch or 20-inch single-rear-wheel setup, and changing wheel diameter without confirming tire dimensions and clearance can create unnecessary fitment problems.

Do all 2020 RAM Trucks 3500 sub-models use the same tire size?

No. Tire size varies across the 2020 RAM Trucks 3500 range. Tradesman uses 275/70R18, Limited uses 285/60R20, several other non-DRW trims can use either 275/70R18 or 285/60R20, and the DRW versions use 235/80R17.

That variation means trim name alone is not always enough to choose a tire, especially on Big Horn, Laramie, and Laramie Longhorn trucks that may have more than one wheel package. Confirming the exact sub-model and wheel diameter keeps the search focused and helps avoid ordering a tire that belongs to a different 3500 configuration.

Choosing the Right Tire

What should I consider when choosing a tire for a 2020 RAM Trucks 3500?

Start with the correct size for the truck's configuration: 235/80R17 for DRW models, 275/70R18 for certain 18-inch setups, or 285/60R20 for 20-inch applications. After size, compare construction, wheel-fit range, load capacity, sidewall style, and the type of use the truck sees most often.

A heavy-duty pickup puts more importance on fitment discipline than a casual daily driver. Match the tire to the truck's actual wheel diameter, check that the rim width falls within the tire's usable range, and consider whether the truck is primarily working, towing, or spending more time unloaded on the road.

What sidewall styles are available for 2020 RAM Trucks 3500 tires?

The available sidewall styles shown for the 2020 RAM Trucks 3500 include RWL and RBL. The 275/70R18 BFGoodrich All-Terrain T/A KO2 uses a raised white letter presentation, while the 235/80R17 KO2 uses a black sidewall style.

Sidewall style does not change the basic tire size requirement, but it does affect the truck's visual presentation. Raised white letters create a more aggressive, traditional all-terrain look, while a black sidewall keeps the appearance more understated. Once the correct size is confirmed, sidewall treatment becomes a straightforward appearance choice.

What tire series are available for the 2020 RAM Trucks 3500?

The tire series currently represented for the 2020 RAM Trucks 3500 is the BFGoodrich All-Terrain T/A KO2. It appears in both 275/70R18 and 235/80R17 applications, tying the available product selection to an all-terrain style within those sizes.

Series matters because it helps describe the tire's character and intended use beyond the size itself. Even with a heavy-duty truck, the right choice still starts with the correct fitment, then moves to whether the tire's tread style, load specification, and wheel-fit range align with the way the truck is actually driven.

Restoration & Appearance

Does correct tire fitment matter for a 2020 RAM Trucks 3500 restoration or appearance-focused build?

Yes. Even on a newer heavy-duty truck like the 2020 RAM Trucks 3500, correct tire fitment has a major effect on stance, wheel-to-tire proportion, and overall visual balance. Using the proper 17-inch, 18-inch, or 20-inch fitment keeps the truck closer to its intended configuration.

Appearance-focused builds still need to begin with the right tire size for the sub-model and wheel package. A tire that looks close at a glance may change the truck's visual character if the wheel diameter or profile is different. Confirming the exact wheel setup first gives the build a cleaner, more purposeful finished result.

How does tire construction affect the appearance of a 2020 RAM Trucks 3500?

On the 2020 RAM Trucks 3500, the primary fitments are radial tires, so the truck's intended look is already tied to modern radial sizing and proportions. Construction choice here is less about bias-ply versus radial styling and more about keeping the right modern tire format for the wheel package.

Visual differences are more likely to come from sidewall treatment, tread character, and wheel diameter than from construction type on this truck. That makes details like raised white letters versus black sidewalls more noticeable in the finished appearance. Staying within the correct size family helps preserve both fitment and the truck's overall presence.

Fitment, Maintenance & Road Use

Can modifications affect tire fitment on a 2020 RAM Trucks 3500?

Yes. A 2020 RAM Trucks 3500 can be affected by wheel changes, suspension alterations, leveling kits, or other modifications that alter clearance or wheel dimensions. Even when the truck originally used 235/80R17, 275/70R18, or 285/60R20, a modified setup may need closer verification before replacement.

Aftermarket wheels can change width and offset, and suspension changes can alter clearance at the fender, steering components, or rear dual setup. Checking the actual wheel size on the truck is the first step. From there, inspect for rubbing marks, confirm turning clearance, and make sure the replacement tire matches the truck's real-world configuration.

What should I inspect before driving a 2020 RAM Trucks 3500 on new tires?

Before road use, inspect inflation pressure, lug hardware, visible clearance around the tire, and overall tire condition after installation. On a 2020 RAM Trucks 3500, it also makes sense to confirm the truck is wearing the correct size for its wheel diameter and whether it is a DRW or single-rear-wheel setup.

A short local drive followed by a recheck is a smart next step, especially on a heavy-duty truck that may carry load or towing equipment. Look for unusual contact marks, vibration, or uneven stance. It also helps to verify that all tires on the axle match in size and type so the truck behaves consistently on the road.

How often should tires on a 2020 RAM Trucks 3500 be inspected?

Tires on a 2020 RAM Trucks 3500 should be inspected regularly, not just when tread looks worn. Check them before longer trips, before towing, and as part of routine maintenance for pressure, cuts, punctures, uneven wear, cracking, and any sign of air loss.

A heavy-duty pickup can place more demand on tires than a lighter vehicle, so regular inspection helps catch problems early. Pay special attention to load-related use, curb damage, and shoulder wear. On DRW trucks, inspect the rear setup carefully because issues between the paired tires are easier to miss during a quick walkaround.