The 2018 Nissan Trucks Armada is a full-size SUV built for families, towing, and long-distance road use, with the size and stance buyers expect from a body-on-frame vehicle in this class. That mission makes tire selection especially important, because the Armada’s road manners, load support, and visual presence all depend on matching the correct wheel and tire package. This model uses two primary radial tire sizes, with 275/60R20 and 265/70R18 fitments tied to specific sub-models. The main decision is not bias-ply versus radial, but confirming trim level and wheel diameter first. From there, the focus shifts to maintaining the intended ride height, clearance, and overall tire proportions.
Which Tire Size Is Right for The 2018 Nissan Trucks Armada
The 2018 Nissan Trucks Armada uses two primary tire sizes, and the right one depends on the specific sub-model and wheel diameter. Both are radial metric sizes, but one fits an 18-inch rim and the other fits a 20-inch rim, so confirming the exact wheel setup comes first. Once that is settled, the decision becomes choosing a tire that matches the Armada’s intended use and maintains proper fitment.
A 275/60R20 tire uses a 275-millimeter nominal section width, a 60-series aspect ratio, radial construction, and a 20-inch rim diameter. On the 2018 Nissan Trucks Armada, this size is one of the primary fitments and is tied to specific higher-trim sub-models using 20-inch wheels. Its overall tire dimensions help preserve the larger-wheel appearance and stance associated with those configurations. This is the size to evaluate when the Armada already wears factory-type 20-inch wheels or another verified 20-inch setup that matches the vehicle’s clearance and wheel specifications.
A 265/70R18 tire uses a 265-millimeter nominal section width, a 70-series aspect ratio, radial construction, and an 18-inch rim diameter. On the 2018 Nissan Trucks Armada, this size serves specific sub-models equipped with 18-inch wheels rather than the 20-inch package. Its proportions are close in overall diameter to the 20-inch fitment, but the wheel size is different, so it should be chosen only for the correct rim. This size makes sense when maintaining the proper tire and wheel combination for an Armada configured with 18-inch wheels.
Sub-model fitment matters on the 2018 Nissan Trucks Armada because tire size changes with the wheel package. Three covered sub-models use the 20-inch fitment, while the SV uses the 18-inch setup, so confirming the exact trim helps prevent an avoidable size mismatch.
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2018 Nissan Trucks Armada Platinum
The 2018 Nissan Trucks Armada Platinum uses the 275/60R20 radial tire size with a 20-inch wheel package. Tire selection for this sub-model starts with keeping that 20-inch fitment in place and checking the actual wheel setup if the vehicle has been changed from stock.
The 2018 Nissan Trucks Armada Platinum Reserve uses the 275/60R20 radial tire size. That makes wheel-diameter confirmation especially important, since this trim follows the 20-inch fitment and should be matched with a tire that preserves the intended proportions and clearance.
The 2018 Nissan Trucks Armada SL uses the 275/60R20 radial tire size on a 20-inch rim. Choosing tires for this sub-model means staying with the correct wheel diameter first, then comparing tire options that suit the vehicle’s road use, towing demands, and overall stance.
The 2018 Nissan Trucks Armada SV uses the 265/70R18 radial tire size rather than the 20-inch fitment used on the other covered trims. That difference makes the SV the key trim to verify before ordering, especially if the vehicle has aftermarket wheels or replacement rims.
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.
Frequently Asked Questions
Owners of a 2018 Nissan Trucks Armada usually need to confirm the correct tire size by sub-model, then sort out wheel diameter, overall fitment, and tire selection for everyday road use, towing, and long-trip reliability.
Tire Size & Fitment
What tire size fits a 2018 Nissan Trucks Armada?
The 2018 Nissan Trucks Armada uses either 275/60R20 or 265/70R18, depending on the sub-model and wheel package. Platinum, Platinum Reserve, and SL models use 275/60R20, while the SV uses 265/70R18. Both are radial metric tire sizes, but they fit different rim diameters.
The most important step is confirming which trim and wheel diameter the vehicle actually has before choosing tires. Many Armadas remain stock, but a used SUV may have had its wheels changed, so checking the tire sidewall and measuring the wheel can prevent ordering the right tire size for the wrong wheel.
What size rim does a 2018 Nissan Trucks Armada use?
A 2018 Nissan Trucks Armada uses either an 18-inch or 20-inch rim, depending on sub-model. The 265/70R18 tire fits the 18-inch setup used on the SV, while the 275/60R20 tire fits the 20-inch setup used on Platinum, Platinum Reserve, and SL models.
Rim diameter is the first fitment check because an 18-inch tire cannot be mounted on a 20-inch wheel, and a 20-inch tire cannot be mounted on an 18-inch wheel. If the Armada has replacement wheels, verify the actual wheel diameter and width before matching a new tire to the current setup.
Do all 2018 Nissan Trucks Armada sub-models use the same tire size?
No, the covered 2018 Nissan Trucks Armada sub-models do not all use the same tire size. Platinum, Platinum Reserve, and SL models use 275/60R20, while the SV uses 265/70R18. The tire construction remains radial across the lineup, but the size and rim diameter change with trim.
That difference matters because the first buying decision is identifying the exact sub-model or confirming the wheel package already on the vehicle. When an Armada has been purchased used or modified, checking both the trim and the wheel itself is a better safeguard than relying on appearance alone.
Choosing the Right Tire
What should I consider when choosing a 275/60R20 tire for a 2018 Nissan Trucks Armada?
A 275/60R20 for a 2018 Nissan Trucks Armada should match the sub-model that uses the 20-inch wheel package, including Platinum, Platinum Reserve, and SL. The key factors are keeping the correct size, confirming wheel compatibility, and choosing a tire suited to how the Armada is driven, whether that means family travel, towing, or daily road use.
It also helps to compare the tire’s overall dimensions against the existing setup if the vehicle has been altered. Looking at wheel width, clearance at full steering lock, and the condition of the suspension can keep a replacement tire from creating rubbing, stance, or handling issues on a large SUV.
What should I consider when choosing a 265/70R18 tire for a 2018 Nissan Trucks Armada?
A 265/70R18 tire is the proper primary size for the 2018 Nissan Trucks Armada SV. Choosing within that size starts with confirming the Armada still uses its 18-inch wheel setup, then selecting a tire that supports the vehicle’s weight, driving habits, and typical use without changing the basic fitment.
Because this is an SUV that may see highway driving, passengers, cargo, or towing, the practical goal is maintaining the intended tire proportions and rim match. A good comparison includes checking the existing wheel width, looking for any suspension changes, and making sure there is no interference at the fender or inner wheelwell.
How do I choose between the available tire sizes for a 2018 Nissan Trucks Armada?
The two tire sizes for a 2018 Nissan Trucks Armada are not interchangeable choices across the lineup. The correct size depends on the sub-model and wheel diameter already on the vehicle: 275/60R20 for Platinum, Platinum Reserve, and SL, or 265/70R18 for SV. The right decision starts with matching the tire to the wheel.
Once the correct size is confirmed, compare tires based on intended use rather than trying to pick between the two sizes. Road-trip comfort, towing demands, wheel setup, and maintaining proper clearance are more useful selection points than appearance alone, especially on an Armada that may have had wheels swapped at some point.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Nissan Trucks Armada restoration or refurbishment?
Yes, correct tire fitment matters on a 2018 Nissan Trucks Armada even in a light restoration or refurbishment context. This model uses trim-specific wheel and tire combinations, so keeping the proper 275/60R20 or 265/70R18 size helps preserve the intended stance, wheel-to-tire proportion, and overall appearance of the SUV.
A refurbished Armada can look noticeably different when the wrong sidewall height or wheel diameter is used. Buyers aiming for an authentic presentation should start by confirming the original trim and wheel package on the vehicle, then choose a replacement tire that maintains those proportions rather than chasing a visually similar but incorrect size.
Which tire size should I keep for a period-appropriate 2018 Nissan Trucks Armada look?
A period-appropriate look on a 2018 Nissan Trucks Armada starts with keeping the size that belongs to the vehicle’s sub-model and wheel package. That means 275/60R20 on Platinum, Platinum Reserve, and SL models, or 265/70R18 on the SV. Staying with the correct size preserves the Armada’s intended visual balance.
Modern full-size SUVs rely heavily on wheel-and-tire proportion for their appearance, so a wrong-size replacement can make the vehicle look under-tired or overly heavy in the sidewall. The most useful check is comparing the current wheel diameter and trim level before replacing tires, especially if the Armada has passed through more than one owner.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Nissan Trucks Armada?
Yes, modifications can affect tire fitment on a 2018 Nissan Trucks Armada. Aftermarket wheels, suspension changes, leveling kits, or body alterations can change the space available around the tire and may also change the wheel width or offset. That matters even when the vehicle still appears to use one of the original tire sizes.
A practical check includes confirming the actual wheel diameter, looking at wheel width and offset, and turning the steering from lock to lock to watch for rubbing. Clearance at the fender liner and suspension components should also be reviewed, especially on an Armada that has been lifted, lowered, or fitted with non-original wheels.
What should I inspect before driving a 2018 Nissan Trucks Armada on new tires?
Before driving a 2018 Nissan Trucks Armada on new tires, inspect the wheel condition, verify that the tire size matches the trim and rim diameter, and confirm proper inflation. It is also wise to check for visible sidewall damage, mounting issues, or uneven seating at the bead after installation.
A short road test should be followed by another visual inspection for rubbing, unusual vibration, or air loss. Large SUVs place real demand on their tires, so it also helps to review alignment condition, suspension wear, and brake components before putting the vehicle back into regular use or heading out on a longer trip.
How often should tires on a 2018 Nissan Trucks Armada be inspected?
Tires on a 2018 Nissan Trucks Armada should be inspected regularly, especially before long drives, towing use, or seasonal travel. Routine checks should include air pressure, tread wear, cuts, bulges, and cracking, along with a quick look for uneven wear that could point to alignment or suspension issues.
Because the Armada is a heavy full-size SUV, small tire issues can become more noticeable under load. Monthly visual checks are a sensible habit, and any vehicle that sits for long periods should be inspected again before returning to highway use, with close attention to flat spotting, pressure loss, and age-related sidewall condition.
