The 2020 Jeep Trucks Gladiator brought Jeep’s midsize pickup back with the open-air character of a Wrangler and the added utility of a truck bed, making tire choice especially important for both appearance and real-world use. This model year spans work-ready trims, upscale versions, and more off-road-focused sub-models, so fitment is not the same across the lineup. The 2020 Jeep Trucks Gladiator uses three primary radial tire sizes: 245/75R17, 255/70R18, and 285/70R17. That makes the first step identifying the exact sub-model and wheel diameter, then comparing the available tire’s load range, sidewall style, and intended use before putting the truck back into daily driving, trail use, or mixed-service duty.
Which Tire Size Is Right for The 2020 Jeep Trucks Gladiator
The 2020 Jeep Trucks Gladiator uses three primary tire sizes, and the right one depends on the exact sub-model and wheel diameter. Two sizes fit 17-inch wheels, while 255/70R18 fits an 18-inch wheel, so confirming the truck’s actual wheel setup comes first. Once that is settled, the decision shifts to load specification, sidewall presentation, and whether the tire’s intended use matches how the Gladiator is driven.
Fit(s): Altitude, Overland, and Overland North Edition
Construction: Radial|Rim: 18 in
255/70R18 is a metric radial size in which 255 identifies nominal section width in millimeters, 70 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. On the 2020 Jeep Trucks Gladiator, this size belongs to 18-inch-wheel applications rather than the 17-inch setups used elsewhere in the range. Its role is straightforward: matching the correct wheel diameter first, then confirming that the tire selected suits the truck’s intended street, utility, or light off-road use. This is the size to evaluate when the Gladiator is an Altitude, Overland, or Overland North Edition on its original 18-inch wheel format.
285/70R17 is a metric radial size that uses a 285-millimeter nominal section width, a 70-series profile, and a 17-inch rim diameter. For the 2020 Jeep Trucks Gladiator, it is associated with 17-inch-wheel trims that call for a larger, broader tire than the standard Sport setup. Available products in this size include BFGoodrich All-Terrain T/A KO2 options with raised white letter sidewalls and different load specifications, which gives buyers some meaningful choice within the same size. This is the size to review closely when matching a Launch Edition, Mojave, or Rubicon configuration and checking that the wheel width and duty rating align with the truck’s actual use.
245/75R17 is a metric radial size with a 245-millimeter nominal section width, a 75-series profile, and a 17-inch wheel diameter. On the 2020 Jeep Trucks Gladiator, this size serves the 17-inch-wheel Sport and Sport S applications rather than the wider 285/70R17 setups used on other trims. BFGoodrich offers this size in the All-Terrain T/A KO2 series with a raised white letter sidewall, making it a straightforward choice for buyers who want an all-terrain presentation in the correct size. It is the size to focus on when maintaining a standard Sport-based fitment and confirming that the truck has not been changed to a different wheel package.
Tire fitment for the 2020 Jeep Trucks Gladiator varies by sub-model, so trim identification matters before choosing a replacement. Some versions use 17-inch wheels and others use 18-inch wheels, and the tire sizes are not interchangeable without confirming the actual wheel and vehicle setup.
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2020 Jeep Trucks Gladiator Altitude
The 2020 Jeep Trucks Gladiator Altitude uses the 255/70R18 radial size, placing it in the 18-inch-wheel group rather than the 17-inch fitments used on other trims. Tire selection starts with keeping that wheel diameter correct, then choosing a tire that matches the truck’s intended street and utility use.
The 2020 Jeep Trucks Gladiator Launch Edition uses 285/70R17 radial tires, which is the larger 17-inch fitment shared with several more off-road-oriented or premium configurations. That makes wheel-width compatibility and load specification especially worth checking when comparing available replacements in this size.
The 2020 Jeep Trucks Gladiator Mojave uses the 285/70R17 radial size on a 17-inch wheel. Buyers replacing this fitment should stay focused on the correct size first, then compare the available tire’s load specification and overall use profile before changing anything about the wheel-and-tire package.
The 2020 Jeep Trucks Gladiator Overland uses 255/70R18 radial tires, so it follows the 18-inch-wheel fitment rather than either of the 17-inch options. Replacement choices should begin with that wheel diameter and then move to the tire’s intended road use, sidewall presentation, and overall character.
The 2020 Jeep Trucks Gladiator Overland North Edition also uses the 255/70R18 radial size. Tire selection is mainly about preserving the proper 18-inch fitment and confirming that any replacement still suits the truck’s actual wheel, suspension, and day-to-day use.
The 2020 Jeep Trucks Gladiator Rubicon uses 285/70R17 radial tires on a 17-inch wheel. Buyers considering replacements in this size should compare the available load specification and wheel-width range carefully, especially if the truck sees off-road use or has been altered from stock.
The 2020 Jeep Trucks Gladiator Sport uses the 245/75R17 radial size, which differs from both the 18-inch Overland-family fitment and the wider 285/70R17 setup. Tire choice is most straightforward when the truck still has its original wheel package and the replacement is matched to that 17-inch format.
The 2020 Jeep Trucks Gladiator Sport S uses 245/75R17 radial tires, the same basic fitment as the Sport. That means the main priority is confirming that the truck has not been changed to a different wheel-and-tire package before selecting a replacement in this size.
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 2020 Jeep Trucks Gladiator Tires for Sale
Available 2020 Jeep Trucks Gladiator product choices center on 285/70R17 and 245/75R17, with BFGoodrich All-Terrain T/A KO2 options in radial construction. The main comparison points are size, load specification, raised white letter sidewall styling, and wheel-width compatibility.
The most common 2020 Jeep Trucks Gladiator tire questions usually come down to trim-specific sizing, 17-inch versus 18-inch wheels, available all-terrain options, and what to inspect before putting the truck back into regular road or trail use.
Tire Size & Fitment
What tire size fits a 2020 Jeep Trucks Gladiator?
The 2020 Jeep Trucks Gladiator uses three primary tire sizes: 245/75R17, 255/70R18, and 285/70R17. All three are radial sizes, but they do not apply across the entire lineup. Sport and Sport S use 245/75R17, Altitude and the Overland variants use 255/70R18, and Launch Edition, Mojave, and Rubicon use 285/70R17.
That means the correct starting point is the exact sub-model and its wheel diameter, not the Gladiator name alone. A 17-inch tire cannot be mounted on an 18-inch wheel, and the two 17-inch sizes still serve different trim groups. Any truck with aftermarket wheels or a previous tire-package change should be checked carefully before replacement.
What size rim does a 2020 Jeep Trucks Gladiator use?
The 2020 Jeep Trucks Gladiator uses either a 17-inch or 18-inch rim, depending on the sub-model. The 245/75R17 and 285/70R17 sizes use 17-inch wheels, while 255/70R18 uses an 18-inch wheel. Rim diameter is one of the most important parts of correct tire selection on this truck because the Gladiator range does not use a single wheel size.
Wheel diameter should be confirmed before anything else, especially on a used Gladiator that may have been modified. Tire size markings on the current sidewall help, but the actual wheel should still be checked. Rim width matters too when comparing available products, particularly in 285/70R17 where the published wheel-width range is part of proper selection.
Why does the 2020 Jeep Trucks Gladiator have more than one tire size?
The 2020 Jeep Trucks Gladiator has more than one tire size because different sub-models use different wheel-and-tire packages. Sport and Sport S use 245/75R17, Altitude and the Overland family use 255/70R18, and Launch Edition, Mojave, and Rubicon use 285/70R17. Those differences reflect trim-level fitment, not multiple interchangeable choices for every Gladiator.
That distinction matters because the first decision is identifying the exact trim and the actual wheels on the truck today. A Gladiator that has been upgraded, lifted, or changed by a previous owner may no longer match its original sub-model fitment. Replacement tires should be chosen around the current wheel diameter, appropriate width range, and available clearance.
Choosing the Right Tire
What should I consider when choosing a tire for a 2020 Jeep Trucks Gladiator?
Start with the correct size for the sub-model: 245/75R17, 255/70R18, or 285/70R17. From there, look at the tire’s construction, wheel-diameter match, load specification, and intended use. On the available Gladiator products, those choices mainly revolve around all-terrain radial construction and whether the truck needs a lighter-duty or heavier-duty version within the same size.
Appearance can matter too, especially when the sidewall style is part of the truck’s visual character. The available BFGoodrich products use raised white letter sidewalls, which suit many late-model Jeep builds well. Beyond appearance, check the wheel width, confirm the current suspension and wheel setup, and choose a tire that matches how the Gladiator is actually driven.
What sidewall styles are available for 2020 Jeep Trucks Gladiator tires?
The available products for the 2020 Jeep Trucks Gladiator use an RWL sidewall, which means raised white letters. That sidewall treatment appears on the BFGoodrich All-Terrain T/A KO2 options offered in the applicable Gladiator sizes shown here. It gives the truck a more traditional off-road and light-truck appearance than a plain blackwall presentation.
Sidewall style is mostly an appearance decision once the correct size, wheel diameter, and load specification are settled. Raised white letters can complement the Gladiator’s rugged look, but the more important checks remain wheel compatibility and intended use. If the truck is kept close to stock, keeping the proper size matters more than changing visual details.
What brands offer tires for the 2020 Jeep Trucks Gladiator?
BFGoodrich offers the available 2020 Jeep Trucks Gladiator products shown here, including All-Terrain T/A KO2 tires in 285/70R17 and 245/75R17. Those options stay within radial construction and are aimed at buyers who want an all-terrain light-truck style. The 285/70R17 size includes more than one load specification within the same overall tire size.
Brand selection is only one part of the decision. The bigger issue is whether the Gladiator uses a 17-inch or 18-inch wheel and which trim-specific size belongs on the truck. After that, compare the available product’s load capacity, rim-width range, and overall use profile so the replacement matches both the vehicle and the way it is used.
Restoration & Appearance
Which tire should I choose for a period-style 2020 Jeep Trucks Gladiator?
A period-style approach on a 2020 Jeep Trucks Gladiator usually means staying with the correct trim-specific size and preserving the truck’s original wheel diameter rather than chasing a dramatically different look. That could mean 245/75R17 for Sport and Sport S, 255/70R18 for Altitude and Overland-family models, or 285/70R17 for Launch Edition, Mojave, and Rubicon.
Because this is a modern truck rather than a vintage restoration project, appearance usually comes from keeping the overall wheel-and-tire package consistent with the truck’s original character. Raised white letter all-terrain tires can suit that look well on the right build. Exact originality questions are best checked against window-sticker, dealer, or marque-specific reference material.
How does tire construction affect the appearance of a restored 2020 Jeep Trucks Gladiator?
All primary tire fitments for the 2020 Jeep Trucks Gladiator are radial, so the construction question here is not bias-ply versus radial in the vintage sense. Appearance is shaped more by the size, sidewall treatment, and overall stance than by construction changes. The available products use radial all-terrain construction with raised white letter sidewalls.
For a clean, restoration-oriented presentation, the visual goal is usually keeping the correct wheel diameter and avoiding a tire package that looks out of scale for the trim. A wider off-road tire can change the truck’s character quickly, even when it still fits the wheel. Matching the sub-model’s proper size is the best place to begin.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Jeep Trucks Gladiator?
Yes. A 2020 Jeep Trucks Gladiator with aftermarket wheels, a lift, altered suspension components, or a changed wheel offset may no longer match its original trim-based tire fitment. That matters even when the size on the truck looks close to stock, because the Gladiator already spans 17-inch and 18-inch wheel packages from the factory.
Modified trucks should be checked for actual wheel diameter, wheel width, steering clearance, and fender clearance before selecting replacements. Suspension changes can also affect how the tire sits under compression and at full lock. Staying with the tire size tied to the truck’s current wheel package is often the safest starting point for a clean replacement decision.
What should I inspect before driving a 2020 Jeep Trucks Gladiator on new tires?
Before driving a 2020 Jeep Trucks Gladiator on new tires, inspect the wheels for damage, confirm the tire size matches the truck’s sub-model or current wheel setup, and check inflation carefully. Lug torque, valve condition, and visible clearance around suspension and body components are also worth reviewing. A quick look at alignment wear patterns on the old tires can be helpful too.
Initial road use should include listening for rubbing and rechecking pressure after the first drives. A Gladiator used on rough roads or trails should also have its sidewalls and tread inspected regularly for cuts or impact damage. Even a correctly sized tire needs the surrounding wheel, suspension, and alignment conditions to be in good order.
What should I check before a longer drive in a 2020 Jeep Trucks Gladiator?
Before a longer drive, confirm that the 2020 Jeep Trucks Gladiator is running the correct size for its wheel package and that the tires show even wear, stable air pressure, and no visible cuts, cracking, or bulges. Tread condition matters, but so does overall casing health, especially on a truck that may see mixed pavement and trail use.
Longer trips are also a good reason to look over the spare, inspect the wheels, and make sure the truck does not have any contact issues at full steering lock. A Gladiator that has been sitting or used seasonally deserves extra attention, since low-use vehicles can still develop age-related tire issues even when tread depth looks acceptable.
