The 2018 Nissan Trucks Pathfinder sits in the modern family SUV space, balancing daily-road comfort with the broader utility that has long kept the Pathfinder name relevant. For buyers replacing tires today, the main fitment question is less about vintage-style construction and more about matching the correct wheel package to the exact trim. This Pathfinder uses radial tires in either 235/65R18 or 235/55R20, depending on sub-model. That means the real choice starts with confirming trim and rim diameter, then comparing road-use priorities across the correct size. Appearance is secondary here, but correct dimensions and wheel compatibility still matter before any replacement set goes on the vehicle.
Which Tire Size Is Right for The 2018 Nissan Trucks Pathfinder
The 2018 Nissan Trucks Pathfinder uses two primary tire sizes, and they are tied to specific sub-models and wheel diameters. Both are radial metric sizes, but one fits an 18-inch rim and the other fits a 20-inch rim, so the first step is confirming the exact trim and the wheel size currently on the vehicle before comparing replacement tires.
235/55R20 is a metric radial size where 235 identifies the nominal section width in millimeters, 55 is the aspect ratio, R indicates radial construction, and 20 is the rim diameter in inches. On the 2018 Nissan Trucks Pathfinder, this size is part of the larger-wheel fitment used on certain sub-models rather than across the full range. Its overall diameter stays very close to the 18-inch package, but the correct wheel is essential because the rim diameter is different. This size should be chosen only after confirming that the Pathfinder is equipped for the 20-inch setup.
235/65R18 is a metric radial size with a 235-millimeter nominal section width, a 65-series profile, radial construction, and an 18-inch rim diameter. For the 2018 Nissan Trucks Pathfinder, this is the 18-inch wheel fitment used across several sub-models and represents the more widely shared size in the lineup. Its dimensions are close in overall height to the 20-inch package, but it is not the same fitment because the wheel diameter differs. This size belongs on Pathfinders using the 18-inch wheel package, so wheel confirmation comes before tire selection.
Sub-model fitment matters on the 2018 Nissan Trucks Pathfinder because tire size changes with trim and wheel package. Some versions share the 18-inch setup, while others use the 20-inch fitment, so identifying the exact sub-model is the first step before ordering replacement tires.
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2018 Nissan Trucks Pathfinder Platinum
The 2018 Nissan Trucks Pathfinder Platinum uses the 235/55R20 radial fitment. Tire selection for this trim starts with confirming the 20-inch wheel package, then comparing replacement options within that exact size rather than mixing it with the 18-inch Pathfinder setup.
The 2018 Nissan Trucks Pathfinder S uses the 235/65R18 radial size. That keeps tire selection straightforward as long as the vehicle still has its 18-inch wheels, making wheel verification the key check before choosing a replacement tire.
The 2018 Nissan Trucks Pathfinder SL can use either the 235/55R20 or 235/65R18 radial fitment, depending on wheel package. This makes wheel diameter especially important on the SL, since trim name alone does not settle the tire choice without checking the actual wheels on the vehicle.
The 2018 Nissan Trucks Pathfinder SV uses the 235/65R18 radial size. Replacement selection is mainly a matter of staying with the correct 18-inch fitment and confirming that the Pathfinder has not been changed to a different wheel package over time.
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
Common questions for the 2018 Nissan Trucks Pathfinder usually center on choosing between the 18-inch and 20-inch tire sizes, confirming trim-level fitment, and checking wheel compatibility before replacement.
Tire Size & Fitment
What tire size fits a 2018 Nissan Trucks Pathfinder?
The 2018 Nissan Trucks Pathfinder uses either 235/65R18 or 235/55R20, depending on sub-model and wheel package. Both are radial metric sizes, but they are not interchangeable as primary fitments because one is built for an 18-inch rim and the other is built for a 20-inch rim.
The most important step is identifying the exact trim and confirming the wheel diameter currently on the vehicle. An S or SV typically uses the 18-inch size, the Platinum uses the 20-inch size, and the SL can appear with either setup, so the actual wheel package matters as much as the model name.
What size rim does a 2018 Nissan Trucks Pathfinder use?
A 2018 Nissan Trucks Pathfinder uses either an 18-inch or 20-inch rim, depending on the tire size and sub-model. The 235/65R18 fitment belongs on an 18-inch rim, while the 235/55R20 fitment belongs on a 20-inch rim.
Checking the wheel diameter before buying tires prevents one of the most common replacement mistakes on this Pathfinder. The SL deserves extra attention because it can use either size, and any Pathfinder with aftermarket wheels should be checked at the wheel itself rather than relying only on trim assumptions.
Why does the 2018 Nissan Trucks Pathfinder have more than one tire size?
The 2018 Nissan Trucks Pathfinder has more than one tire size because different sub-models use different wheel packages. The lineup includes an 18-inch fitment in 235/65R18 and a 20-inch fitment in 235/55R20, with the SL appearing in either configuration.
That means tire selection starts with the vehicle as it sits, not just the badge on the liftgate. Looking at the current tire sidewall and confirming the wheel diameter is the quickest way to avoid choosing the wrong size, especially on a Pathfinder that may have had wheels replaced since new.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Nissan Trucks Pathfinder?
Start with the correct size for the Pathfinder’s wheel package: 235/65R18 or 235/55R20. Since both are radial metric fitments, the first decision is not construction type but matching the tire to the actual rim diameter and the specific trim configuration on the vehicle.
After size is confirmed, compare how the Pathfinder is used day to day. A vehicle that sees commuting, family travel, and highway miles benefits from careful attention to overall tire condition, load suitability, and consistent sizing across all four positions rather than chasing a different size that only looks close.
How do I choose between the available Pathfinder tire sizes for a 2018 Nissan Trucks Pathfinder?
You do not choose between 235/65R18 and 235/55R20 based on preference alone, because each size belongs to a specific wheel diameter. The 18-inch size is used on certain Pathfinders, while the 20-inch size belongs on Pathfinders equipped with the larger wheel package.
The right approach is to confirm what is already on the vehicle and replace within that fitment unless a broader wheel-and-tire change is being planned. Any move between sizes should include wheel compatibility, clearance, and overall setup checks rather than assuming that both Pathfinder sizes can be used on any trim.
Which tire size should I use for my 2018 Nissan Trucks Pathfinder SL?
The 2018 Nissan Trucks Pathfinder SL can use either 235/65R18 or 235/55R20, so the correct choice depends on the wheel package currently on the vehicle. The trim name alone does not settle the tire size because the SL appears with both fitments.
Reading the sidewall on the current tires and confirming the wheel diameter is the safest way to select a replacement. This matters even more if the Pathfinder has had a previous wheel change, because using the wrong size for the installed rim can create an immediate fitment problem.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Nissan Trucks Pathfinder restoration?
Correct tire fitment still matters on a 2018 Nissan Trucks Pathfinder, even though the concern is usually proper replacement rather than vintage-style restoration. Staying with the right size for the trim and wheel package preserves the intended relationship between tire dimensions, wheel diameter, and the Pathfinder’s overall stance.
A Pathfinder being refreshed for resale, collection, or careful long-term ownership benefits from consistency more than visual experimentation. Matching all four tires in the proper size and confirming that the wheel package suits the trim helps the vehicle present properly and avoids the mismatched look that comes from using an incorrect fitment.
How does tire size affect the appearance of a 2018 Nissan Trucks Pathfinder?
Tire size has a visible effect on the 2018 Nissan Trucks Pathfinder because the model uses two distinct wheel-and-tire packages. A 235/65R18 tire pairs with an 18-inch wheel, while a 235/55R20 tire pairs with a 20-inch wheel, creating different proportions between sidewall height and wheel face.
That visual difference is part of why the exact fitment should match the wheel setup already on the vehicle. Using the proper size keeps the Pathfinder’s appearance balanced, while mixing sizes with the wrong rim diameter can create an obviously incorrect look before any road-use concerns even enter the picture.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Nissan Trucks Pathfinder?
Yes, modifications can affect tire fitment on a 2018 Nissan Trucks Pathfinder. Aftermarket wheels, suspension changes, altered ride height, or body modifications can change the clearance and wheel specifications that the original 235/65R18 or 235/55R20 fitment expects.
A Pathfinder that has been changed from stock should be checked for wheel diameter, width, and tire clearance at full steering lock and normal ride height. Even when a tire size seems close to the original, the real-world fit can change once wheel offset or suspension position has been altered.
What should I inspect before driving a 2018 Nissan Trucks Pathfinder on new tires?
Before driving a 2018 Nissan Trucks Pathfinder on new tires, inspect that all four tires match the intended size for the vehicle’s wheel package and that inflation is set properly for the installed tires and vehicle use. It also helps to check for any visible damage to wheels, valve stems, or mounting surfaces.
A short visual review after installation can catch preventable issues early. Look for even seating on the rim, confirm there is no rubbing during turning, and pay attention to vibration or pull on the first road test, since those signs can point to balancing, clearance, or installation problems.
How often should tires on a 2018 Nissan Trucks Pathfinder be inspected?
Tires on a 2018 Nissan Trucks Pathfinder should be inspected regularly, not just when tread looks low. Frequent checks for pressure loss, uneven wear, cuts, bulges, and sidewall damage are especially useful on a family-use SUV that may see commuting, errands, and longer highway trips.
A practical routine is to look over the tires monthly and again before longer drives. That habit helps catch alignment wear, damage from potholes, or aging issues early, and it is particularly important if the Pathfinder spends part of its life parked for extended periods between heavier use.
