The 2018 Infiniti Trucks QX60 sits in the modern luxury crossover space, blending three-row family utility with the smoother road manners buyers expect from an upscale Infiniti. For owners shopping tires today, the main fitment question is not vintage construction or period styling, but confirming which wheel package the vehicle carries. This QX60 uses radial tires in two primary sizes, 235/65R18 and 235/55R20, tied to different 18-inch and 20-inch rim diameters. That makes wheel confirmation the first step before comparing tread patterns, ride priorities, and replacement options. For everyday road use, the right choice starts with matching the installed rim size and preserving proper clearance and proportions.
Which Tire Size Is Right for The 2018 Infiniti Trucks QX60
The 2018 Infiniti Trucks QX60 uses two primary tire sizes, and the correct choice depends first on wheel diameter. One fitment is 235/65R18 for 18-inch rims, while the other is 235/55R20 for 20-inch rims. Because the same QX60 Base can appear with either setup, identifying the wheel package on the vehicle matters before comparing replacement tires.
A 235/55R20 tire uses a 235-millimeter nominal section width, a 55-series aspect ratio, radial construction, and a 20-inch rim. On the 2018 Infiniti Trucks QX60, this is the larger-wheel modern radial fitment and should be matched to a vehicle already equipped with 20-inch wheels. The lower-profile format gives buyers a different replacement path than the 18-inch package, especially when balancing appearance and everyday ride priorities. Choosing this size starts with confirming the actual wheel diameter on the vehicle, then comparing tire options built around this exact metric radial specification.
A 235/65R18 tire also uses a 235-millimeter nominal section width and radial construction, but pairs it with a taller 65-series profile on an 18-inch rim. For the 2018 Infiniti Trucks QX60, this size belongs to the 18-inch wheel setup rather than the 20-inch package. Its dimensions keep it in the modern crossover tire category while separating it clearly from the alternate rim diameter fitment. This size is the right path only after verifying that the QX60 actually carries 18-inch wheels, since the two primary fitments are not selected by tread preference alone.
Sub-model fitment is straightforward here, but wheel-package confirmation still matters. The QX60 Base can use either of the two primary radial tire sizes, so the installed rim diameter should be checked before choosing a replacement.
1
2018 Infiniti Trucks QX60 Base
The 2018 Infiniti Trucks QX60 Base uses radial tires and can be equipped with either the 18-inch or 20-inch fitment. Tire selection therefore begins with confirming which wheels are on the vehicle, then choosing the correct size within that setup for normal road use and replacement planning.
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 QX60 tire questions center on choosing between the 18-inch and 20-inch fitments, understanding what those metric radial sizes mean, and checking wheel, suspension, and tire condition before regular road use.
Tire Size & Fitment
What tire size fits a 2018 Infiniti Trucks QX60?
The 2018 Infiniti Trucks QX60 uses two primary tire sizes: 235/65R18 and 235/55R20. Both are radial fitments, and the correct one depends on which wheel package is installed on the vehicle. The QX60 Base can appear with either size, so there is not one universal tire size for every example on the road.
The key step is checking the actual rim diameter before ordering tires. An 18-inch wheel takes 235/65R18, while a 20-inch wheel takes 235/55R20. Tire size should match the wheel already on the vehicle unless a broader wheel-and-tire change is being planned and verified for clearance, load needs, and overall compatibility.
What size rim does a 2018 Infiniti Trucks QX60 use?
The 2018 Infiniti Trucks QX60 uses either an 18-inch rim or a 20-inch rim, depending on the wheel setup. Those rim diameters correspond to the two primary tire sizes: 235/65R18 for 18-inch wheels and 235/55R20 for 20-inch wheels. Both combinations use radial construction.
Rim diameter is the first detail to confirm because it determines which tire size can be mounted. A quick check of the sidewall marking or the wheel itself usually settles the question. Once the wheel diameter is confirmed, the next checks are wheel width, overall tire condition, and any modifications that could affect clearance or replacement choices.
Why does the 2018 Infiniti Trucks QX60 have more than one tire size?
The 2018 Infiniti Trucks QX60 has more than one tire size because it was fitted with different wheel diameters. One setup uses 235/65R18 on an 18-inch rim, and the other uses 235/55R20 on a 20-inch rim. Both sizes are proper primary fitments for this model year.
That means tire selection is tied to the wheel package rather than personal preference alone. A QX60 owner should verify what is actually mounted on the vehicle before comparing replacements. This matters even though the two sizes are close in overall diameter, because the tire must still match the wheel diameter and work cleanly within the vehicle's existing setup.
Choosing the Right Tire
What should I consider when choosing a 235/65R18 tire for a 2018 Infiniti Trucks QX60?
A 235/65R18 tire is one of the correct radial sizes for a 2018 Infiniti Trucks QX60 equipped with 18-inch wheels. The main selection factors are confirming the wheel diameter, staying with the correct size, and choosing a tire suited to how the vehicle is actually used, whether that is daily commuting, family highway travel, or mixed-weather driving.
Beyond size, compare practical details such as tread design, load capability, and the condition of the wheels the tires will mount on. A taller-profile 18-inch setup should still be checked for proper inflation, even wear, and suspension condition. Replacement is also a good time to inspect for alignment issues that may have affected the outgoing tires.
What should I consider when choosing a 235/55R20 tire for a 2018 Infiniti Trucks QX60?
A 235/55R20 tire is the correct radial fitment for a 2018 Infiniti Trucks QX60 that carries 20-inch wheels. Choosing within this size starts with matching the installed rim diameter, then narrowing the field by road-use priorities such as ride feel, seasonal conditions, and how the vehicle is driven in regular family or highway service.
The 20-inch setup should also be evaluated for wheel condition and clearance, especially if the vehicle has seen aftermarket wheel changes or suspension work. Staying with the exact size keeps the replacement process straightforward. It is also wise to inspect tread wear patterns on the old tires, since uneven wear can point to inflation or alignment issues.
How do I choose between the available tire sizes for a 2018 Infiniti Trucks QX60?
The choice between 235/65R18 and 235/55R20 is not made by preference alone, because both sizes belong to different wheel diameters on the 2018 Infiniti Trucks QX60. The correct tire is determined by whether the vehicle has 18-inch or 20-inch wheels. Both are metric radial sizes intended for their specific rim package.
Once the wheel diameter is confirmed, the buying decision shifts from fitment to tire characteristics within that size. Owners can then compare construction details, intended driving use, and the condition of the vehicle's wheels and suspension. The safest path is to match the tire size already tied to the installed rim unless a full, verified wheel-and-tire change is being made.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Infiniti Trucks QX60 restoration or refurbishment?
Correct tire fitment still matters on a 2018 Infiniti Trucks QX60, even though the focus is usually refurbishment rather than vintage restoration. The two proper sizes are 235/65R18 and 235/55R20, and each belongs to a specific wheel diameter. Using the wrong one changes the relationship between tire and wheel immediately.
Appearance is part of that decision, because the 18-inch and 20-inch packages give the QX60 a different visual balance. Anyone freshening up the vehicle should start by preserving the correct size for the installed wheels, then choose replacement tires that suit the intended presentation. Wheel condition and overall stance are worth checking before finalizing the selection.
How does tire size affect the appearance of a 2018 Infiniti Trucks QX60?
Tire size affects the appearance of a 2018 Infiniti Trucks QX60 because the vehicle uses two different wheel-and-tire packages. A 235/65R18 tire pairs with an 18-inch wheel and a taller sidewall, while a 235/55R20 tire pairs with a 20-inch wheel and a shorter sidewall. Both are proper radial fitments for this model.
That visual difference is one reason wheel confirmation matters before replacement. Owners trying to keep the vehicle looking consistent should match the existing wheel package rather than choosing by size name alone. Any wheel change can alter the look of the QX60 substantially, so appearance goals should be balanced with correct rim fitment and clearance checks.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Infiniti Trucks QX60?
Yes, modifications can affect tire fitment on a 2018 Infiniti Trucks QX60. The vehicle's proper tire sizes are tied to either 18-inch or 20-inch wheels, so aftermarket wheels, changes in wheel width, suspension lowering, or body alterations can all influence how a replacement tire sits and clears surrounding components.
A modified QX60 should be checked carefully before ordering tires, even when staying with 235/65R18 or 235/55R20. Wheel diameter is only the starting point. Clearance at full steering lock, suspension travel, and the condition of alignment-related parts all matter when confirming that the chosen size still works cleanly with the vehicle's current setup.
What should I inspect before driving a 2018 Infiniti Trucks QX60 on new tires?
Before driving a 2018 Infiniti Trucks QX60 on new tires, inspect the wheels for damage, verify that the correct size was mounted for the installed rim diameter, and confirm proper inflation. It is also smart to look over valve stems, lug torque, and the basic condition of suspension and steering components that affect how the new tires will wear.
A short follow-up check after initial road use helps catch issues early. Watch for vibration, pulling, unusual noise, or uneven contact that could point to alignment or wheel problems. Since this QX60 uses either an 18-inch or 20-inch package, making sure the tire size matches the actual wheel is just as important as checking the installation itself.
How often should tires on a 2018 Infiniti Trucks QX60 be inspected?
Tires on a 2018 Infiniti Trucks QX60 should be inspected regularly, not just when replacement is due. Routine checks for tread wear, cuts, sidewall damage, bulges, and air loss help catch problems early whether the vehicle uses 235/65R18 or 235/55R20. Pressure should also be checked consistently, especially before longer drives.
Inspection becomes even more important when the vehicle is used less often or sits for stretches, since low-use vehicles can still develop age-related issues. A quick visual check every month and before any trip is a practical habit. Uneven wear is worth taking seriously, because it can signal alignment, suspension, or inflation problems that affect tire life.
