2015 RAM Trucks 2500 Tires

The 2015 RAM Trucks 2500 sits in the heavy-duty pickup world where towing, hauling, and off-pavement confidence matter as much as everyday road manners. By this point, the 2500 had become a familiar choice for buyers who wanted serious capability without stepping into a full commercial truck. Tire fitment on this model depends on the exact sub-model and wheel package, with radial sizes ranging from 245/70R17 and 285/70R17 to 275/70R18 and 285/60R20. Available choices here lean toward BFGoodrich All-Terrain T/A KO2 tires with raised white letter styling. The key is matching the truck's exact trim and wheel diameter before comparing load, rim-width, and overall-use considerations.

Which Tire Size Is Right for The 2015 RAM Trucks 2500

The 2015 RAM Trucks 2500 uses four primary tire sizes, and the right one depends on the exact sub-model and wheel package. All of them are radial fitments, but they span 17-inch, 18-inch, and 20-inch rims, so confirming wheel diameter comes first. After that, the real decision is narrowing the correct size for the trim and then comparing the available product specifications within that fitment.

1
275/70R18Metric radial
Fit(s): Big Horn 4x2, Big Horn 4x4, Laramie 4x2, Laramie 4x4, Laramie Longhorn 4x2, Laramie Longhorn 4x4, Lone Star 4x2, Lone Star 4x4, Outdoorsman, SLT 4x2 Crew Cab, SLT 4x2 Mega Cab, SLT 4x2 Reg. Cab, SLT 4x4 Crew Cab, SLT 4x4 Mega Cab, SLT 4x4 Reg. Cab, Tradesman 4x2, and Tradesman 4x4
Construction: RadialRim: 18 in

275/70R18 is a metric radial size in which 275 represents section width in millimeters, 70 is the aspect ratio, and 18 is the rim diameter in inches. On the 2015 RAM Trucks 2500, this is one of the main heavy-duty radial fitments and appears across many sub-models. In available products, it is represented by the BFGoodrich All-Terrain T/A KO2 with raised white letter styling and a 7.0 to 9.0 inch rim-width range. This size is worth checking closely when the truck has 18-inch wheels and a trim level that could also have been equipped with another wheel package.

Explore 275/70R18 Tires
2
285/60R20Metric radial
Fit(s): Big Horn 4x2, Big Horn 4x4, Laramie 4x2, Laramie 4x4, Laramie Limited 4x2, Laramie Limited 4x4, Laramie Longhorn 4x2, Laramie Longhorn 4x4, Lone Star 4x2, Lone Star 4x4, Outdoorsman, SLT 4x2 Crew Cab, SLT 4x2 Mega Cab, SLT 4x4 Crew Cab, and SLT 4x4 Mega Cab
Construction: RadialRim: 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. For the 2015 RAM Trucks 2500, it serves as a larger-wheel fitment used on several upper trims and optional wheel combinations. Its role in the lineup makes wheel confirmation especially important, since a 20-inch tire cannot be selected simply because another 2500 sub-model uses a different diameter. This is the size to evaluate when the truck is already equipped with 20-inch wheels and the goal is to stay aligned with that setup.

Explore 285/60R20 Tires
3
285/70R17Metric radial
Fit(s): Power Wagon
Construction: RadialRim: 17 in

285/70R17 is a metric radial tire size where 285 is the section width in millimeters, 70 is the aspect ratio, and 17 identifies the rim diameter. On the 2015 RAM Trucks 2500, this size is tied to the Power Wagon and carries a distinctly different fitment role from the 18-inch and 20-inch options used elsewhere in the model range. Available choices include BFGoodrich All-Terrain T/A KO2 products with raised white letter sidewalls and a 7.5 to 9.5 inch rim-width range. This size should be evaluated specifically against the truck's actual wheel setup rather than by trim-family similarity alone.

Explore 285/70R17 Tires
4
245/70R17Metric radial
Fit(s): Tradesman 4x2 and Tradesman 4x4
Construction: RadialRim: 17 in

245/70R17 is a metric radial size with a 245 millimeter section width, a 70-series profile, and a 17-inch rim diameter. Within the 2015 RAM Trucks 2500 range, it appears on Tradesman configurations that use a different wheel and tire setup from many of the larger-fitment trims. The available product is a BFGoodrich All-Terrain T/A KO2 with raised white letter styling and a 6.5 to 8.0 inch rim-width range. This size deserves a careful look when replacing tires on a work-oriented truck that may have retained its original 17-inch wheel package.

Explore 245/70R17 Tires

2015 RAM Trucks 2500 Sub-Model Tires

Tire fitment on the 2015 RAM Trucks 2500 varies by trim, drivetrain, cab configuration, and wheel package rather than staying uniform across the lineup. Checking the exact sub-model matters because some versions share two possible sizes, while others use one specific fitment tied to a particular rim diameter.

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2015 RAM Trucks 2500 Big Horn 4x2

The 2015 RAM Trucks 2500 Big Horn 4x2 uses either an 18-inch or 20-inch radial fitment, so the tire decision starts with the wheel already on the truck. Once wheel diameter is confirmed, selection becomes a matter of choosing the correct size and comparing product specifications within that setup.

Associated Tire Sizes
2

2015 RAM Trucks 2500 Big Horn 4x4

The 2015 RAM Trucks 2500 Big Horn 4x4 also spans 18-inch and 20-inch radial tire setups rather than one universal size. That makes wheel verification essential before replacement, especially on trucks that may have seen previous wheel or tire changes.

Associated Tire Sizes
3

2015 RAM Trucks 2500 Laramie 4x2

The 2015 RAM Trucks 2500 Laramie 4x2 can use either the 18-inch or 20-inch radial fitment found in this model range. Tire selection is straightforward once the wheel package is confirmed, but choosing by trim name alone is not enough.

Associated Tire Sizes
4

2015 RAM Trucks 2500 Laramie 4x4

The 2015 RAM Trucks 2500 Laramie 4x4 shares the same two-size fitment pattern seen on several other trims. The practical step is confirming whether the truck carries 18-inch or 20-inch wheels before narrowing the replacement tire.

Associated Tire Sizes
5

2015 RAM Trucks 2500 Laramie Limited 4x2

The 2015 RAM Trucks 2500 Laramie Limited 4x2 uses a single 20-inch radial fitment, which removes much of the size ambiguity found on other trims. Tire selection then centers on staying within that wheel diameter and matching the truck's intended use.

Associated Tire Sizes
6

2015 RAM Trucks 2500 Laramie Limited 4x4

The 2015 RAM Trucks 2500 Laramie Limited 4x4 also carries one dedicated 20-inch radial tire size. That makes replacement more straightforward, though the actual wheel and any previous modifications should still be checked before ordering.

Associated Tire Sizes
7

2015 RAM Trucks 2500 Laramie Longhorn 4x2

The 2015 RAM Trucks 2500 Laramie Longhorn 4x2 can be fitted with either the 18-inch or 20-inch radial size used across much of the lineup. Tire choice depends first on the wheel package, then on comparing the available specifications for that exact size.

Associated Tire Sizes
8

2015 RAM Trucks 2500 Laramie Longhorn 4x4

The 2015 RAM Trucks 2500 Laramie Longhorn 4x4 follows the same two-size radial pattern as other premium trims. Verifying wheel diameter is the important first step, since the correct tire is tied directly to that 18-inch or 20-inch setup.

Associated Tire Sizes
9

2015 RAM Trucks 2500 Lone Star 4x2

The 2015 RAM Trucks 2500 Lone Star 4x2 uses either an 18-inch or 20-inch radial tire combination. That means a replacement decision should begin at the wheel, not just the badge on the truck.

Associated Tire Sizes
10

2015 RAM Trucks 2500 Lone Star 4x4

The 2015 RAM Trucks 2500 Lone Star 4x4 also carries two possible radial sizes depending on the wheel package. Selecting the correct tire requires confirming which diameter wheel is actually on the vehicle before comparing products.

Associated Tire Sizes
11

2015 RAM Trucks 2500 Outdoorsman

The 2015 RAM Trucks 2500 Outdoorsman can use either the 18-inch or 20-inch radial fitment. That makes wheel confirmation more important than relying on a general model-year assumption when replacing tires.

Associated Tire Sizes
12

2015 RAM Trucks 2500 Power Wagon

The 2015 RAM Trucks 2500 Power Wagon uses the 285/70R17 radial size rather than the 18-inch or 20-inch fitments found on many other 2500 trims. Tire selection here is centered on the truck's 17-inch setup and the available all-terrain specifications within that size.

Associated Tire Sizes
13

2015 RAM Trucks 2500 SLT 4x2 Crew Cab

The 2015 RAM Trucks 2500 SLT 4x2 Crew Cab can be equipped with either the 18-inch or 20-inch radial tire size. The practical replacement path is to confirm wheel diameter first, then compare tire details within the correct fitment.

Associated Tire Sizes
14

2015 RAM Trucks 2500 SLT 4x2 Mega Cab

The 2015 RAM Trucks 2500 SLT 4x2 Mega Cab shares the two-size radial pattern used on many SLT and premium configurations. Choosing the right tire starts with confirming whether the truck has the 18-inch or 20-inch wheel package.

Associated Tire Sizes
15

2015 RAM Trucks 2500 SLT 4x2 Reg. Cab

The 2015 RAM Trucks 2500 SLT 4x2 Reg. Cab uses one primary 18-inch radial tire size. That simplifies selection compared with the two-size trims, but wheel condition and any later changes should still be checked before replacement.

Associated Tire Sizes
16

2015 RAM Trucks 2500 SLT 4x4 Crew Cab

The 2015 RAM Trucks 2500 SLT 4x4 Crew Cab can use either the 18-inch or 20-inch radial setup found in the broader 2500 range. Tire choice depends on identifying the actual wheel package rather than assuming all SLT trucks match.

Associated Tire Sizes
17

2015 RAM Trucks 2500 SLT 4x4 Mega Cab

The 2015 RAM Trucks 2500 SLT 4x4 Mega Cab also spans 18-inch and 20-inch tire fitments. A correct replacement starts by matching the existing wheel diameter, then narrowing the product options in that size.

Associated Tire Sizes
18

2015 RAM Trucks 2500 SLT 4x4 Reg. Cab

The 2015 RAM Trucks 2500 SLT 4x4 Reg. Cab uses a single 18-inch radial tire size. That gives it a more direct fitment path, with tire selection focused on the right load and wheel compatibility for that exact setup.

Associated Tire Sizes
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2015 RAM Trucks 2500 Tradesman 4x2

The 2015 RAM Trucks 2500 Tradesman 4x2 is one of the trims that can use either a 17-inch or 18-inch radial fitment. Because those sizes differ substantially in wheel diameter, replacement should always begin by checking the truck's current wheel package.

Associated Tire Sizes
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2015 RAM Trucks 2500 Tradesman 4x4

The 2015 RAM Trucks 2500 Tradesman 4x4 also carries two possible fitments, one on a 17-inch rim and one on an 18-inch rim. That makes exact wheel confirmation especially important before comparing tires for work use, mixed driving, or light off-road service.

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 2015 RAM Trucks 2500 Tires for Sale

Available products for the 2015 RAM Trucks 2500 center on BFGoodrich All-Terrain T/A KO2 radial tires in 245/70R17, 275/70R18, and 285/70R17. The main comparison points are load specification, rim-width range, and raised white letter sidewall presentation.

Showing 4 of 4
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
Buy Now
Radial BFG KO2

BFG All-Terrain T/A KO2 | 285/70R17 116Q

BFGoodrich - All Terrain TA KO2

SIDEWALLRWL
RIM DIAMETER17 in
RIM WIDTH7.5 - 9.5 in
WEIGHT50.3 lb
MAX LOAD2,755 lbs @ 50 psi
Buy Now
Radial BFG KO2

BFG All-Terrain T/A KO2 | 285/70R17 121/118R

BFGoodrich

SIDEWALLRWL
RIM DIAMETER17 in
RIM WIDTH7.5 - 9.5 in
WEIGHT58.2 lb
MAX LOAD3,195 lbs @ 80 psi
Buy Now
Radial BFG KO2

BFG All-Terrain T/A KO2 | LT245/70R17/E

BFGoodrich - All Terrain TA KO2

SIDEWALLRWL
RIM DIAMETER17 in
RIM WIDTH6.5 - 8.0 in
WEIGHT47 lb
MAX LOAD3,000 lbs @ 80 psi
Buy Now

Frequently Asked Questions

Owners of a 2015 RAM Trucks 2500 usually need to sort out trim-specific tire size, wheel diameter, and heavy-duty radial fitment before anything else. These FAQs focus on the sizes used across the lineup, product-selection factors, and the checks worth making before road use.

Tire Size & Fitment

What tire size fits a 2015 RAM Trucks 2500?

The 2015 RAM Trucks 2500 uses four primary tire sizes: 245/70R17, 275/70R18, 285/70R17, and 285/60R20. All are radial fitments, but they do not apply across the entire model range. Some trims carry one dedicated size, while others can use one of two sizes depending on the wheel package.

The practical first step is matching the tire to the truck's exact sub-model and actual wheel diameter. A Tradesman, for example, may use a different fitment from a Power Wagon or Laramie Limited, and a truck with 20-inch wheels needs a completely different tire than one on 17-inch or 18-inch rims.

What size rim does a 2015 RAM Trucks 2500 use?

The 2015 RAM Trucks 2500 uses 17-inch, 18-inch, and 20-inch rims depending on sub-model and wheel package. The tire lineup reflects that directly, with 245/70R17 and 285/70R17 on 17-inch rims, 275/70R18 on an 18-inch rim, and 285/60R20 on a 20-inch rim.

Rim diameter should be confirmed before comparing any other specification, because the tire sizes are not interchangeable across those wheel diameters. It is also smart to check the current wheel itself rather than relying only on trim level, especially if the truck may have had an earlier tire or wheel change.

Why does the 2015 RAM Trucks 2500 have more than one tire size?

The 2015 RAM Trucks 2500 covers a broad range of trims and configurations, so tire size varies with the wheel package and the specific version of the truck. Premium trims, work-oriented trims, and the Power Wagon do not all share the same fitment, and several sub-models were offered with two possible sizes.

That means replacement should start with the exact truck in front of you, not just the model year and nameplate. Confirm the sub-model, then verify the actual wheel diameter on the vehicle. Once those two points are settled, the correct tire size becomes much easier to narrow down.

Choosing the Right Tire

What should I consider when choosing a tire for a 2015 RAM Trucks 2500?

Start with the correct size for the truck's exact sub-model and wheel diameter, since the 2015 RAM Trucks 2500 uses four different radial fitments. After that, compare the tire's rim-width range, load specification, and intended use. Those details matter on a heavy-duty pickup that may see towing, hauling, or rougher surfaces.

A truck used mostly on-road may call for a different priority than one that spends time on job sites or unpaved roads. It also helps to check whether the truck still has its original wheel setup, because an aftermarket wheel can change the fitment decision even when the trim name seems familiar.

What sidewall styles are available for 2015 RAM Trucks 2500 tires?

The available products for the 2015 RAM Trucks 2500 use RWL sidewalls, which means raised white letter styling. That appearance is offered on the BFGoodrich All-Terrain T/A KO2 tires available here in the applicable 17-inch and 18-inch sizes.

Sidewall style affects appearance more than basic fitment, but it can still matter to owners who want a truck to look more rugged, more understated, or closer to a particular presentation. Once the correct size is confirmed, the sidewall treatment becomes one of the more visible ways to refine the final tire choice.

What tire series are available for the 2015 RAM Trucks 2500?

The available products for this 2015 RAM Trucks 2500 fitment range center on the BFGoodrich All-Terrain T/A KO2 series. That series appears in the listed 245/70R17, 275/70R18, and 285/70R17 sizes and is presented as a radial all-terrain option with raised white letter sidewalls.

When one series carries the fitment, the key comparison shifts from brand-versus-brand shopping to the details within each size. Load specification, rim-width range, and matching the tire to the truck's actual duty cycle become more important than simply looking for a different series name.

Restoration & Appearance

Which tire should I choose for a period-style 2015 RAM Trucks 2500?

A period-style approach on a 2015 RAM Trucks 2500 starts with keeping the truck in its correct original-size family for the exact trim and wheel package. Since this is a modern heavy-duty pickup with radial-only primary fitments, the focus is less about vintage construction and more about staying true to the truck's intended wheel diameter and stance.

Appearance choices then come from the tire's visual character, including the all-terrain tread and raised white letter sidewall offered in the available products. For owners aiming at a highly exact presentation, confirming the truck's original wheel and tire setup through vehicle-specific references is still worth the extra effort.

How does tire construction affect the appearance of a restored 2015 RAM Trucks 2500?

On a 2015 RAM Trucks 2500, construction does not create a bias-ply-versus-radial appearance decision because the primary fitments are radial throughout the range. Visual character comes instead from the exact size, the wheel diameter it is paired with, and the sidewall treatment used on the tire.

A 17-inch, 18-inch, or 20-inch setup can change how the truck sits and how much sidewall is visible, even when all of them are correct somewhere within the model lineup. Matching the tire to the correct trim and wheel package is the best way to preserve a coherent, restoration-minded look.

Fitment, Maintenance & Road Use

Can modifications affect tire fitment on a 2015 RAM Trucks 2500?

Yes. Wheel changes, lift kits, leveling kits, suspension alterations, and previous tire substitutions can all affect tire fitment on a 2015 RAM Trucks 2500. That matters even more on a truck with several factory size paths, because a replacement decision can become confusing once the original wheel package has been changed.

Checking the actual wheel diameter and width on the truck is the first step, followed by a look at clearance around suspension components, steering travel, and the fenders. On a modified heavy-duty pickup, the right fitment decision depends on the current setup rather than the badge alone.

What should I inspect before driving a 2015 RAM Trucks 2500 on new tires?

Before road use, inspect inflation pressure, wheel condition, lug hardware, and basic tire seating on the rim. It is also wise to look over the suspension, steering components, and alignment condition, especially on a 2015 RAM Trucks 2500 that may tow, haul, or spend time on rough surfaces.

A heavy-duty truck can mask developing issues until they affect wear or stability, so a quick walk-around is not enough. Look for rubbing marks, uneven gaps, and any sign that the tire is too close to nearby components. A short recheck after the first miles helps confirm everything is settling normally.

How should tires on a 2015 RAM Trucks 2500 be maintained?

Tires on a 2015 RAM Trucks 2500 should be maintained with regular pressure checks, periodic tread inspection, and close attention to cuts, cracking, punctures, and uneven wear. On a truck that may carry heavy loads, keeping inflation appropriate to the tire and use is especially important for stability and wear control.

It also helps to monitor for slow air loss and to inspect the wheels themselves for damage or corrosion at service intervals. Trucks that sit for longer periods still need occasional checks, since age, weather exposure, and storage conditions can affect tire condition even when mileage stays low.