The 2015 Infiniti Trucks QX60 sits in the three-row luxury crossover segment, blending family-use practicality with the smoother road manners buyers expected from Infiniti during the mid-2010s. It is a vehicle that often serves double duty today as both a comfortable daily driver and a well-kept long-term ownership SUV. Tire selection centers on two primary radial sizes, 235/65R18 and 235/55R20, so the first step is confirming which wheel package is on the vehicle. Once wheel diameter is settled, the real choice becomes ride and appearance preference, brand selection, and making sure the tire matches the QX60's current wheel and suspension setup.
Which Tire Size Is Right for The 2015 Infiniti Trucks QX60
The 2015 Infiniti Trucks QX60 uses two primary tire sizes, and both are radial fitments. The key difference is wheel diameter, since one size fits an 18-inch wheel and the other fits a 20-inch wheel. Both the Base and Hybrid can use either size, so the first thing to confirm is which wheels are actually on the vehicle before comparing tire options.
A 235/55R20 tire uses a 235-millimeter section width, a 55-series aspect ratio, radial construction, and a 20-inch rim diameter. On the 2015 Infiniti Trucks QX60, this size is part of the factory-style radial fitment range and is tied to the larger wheel package. Its lower-profile layout compared with the 18-inch option gives the vehicle a different visual stance while keeping overall tire diameter very close. This is the size to evaluate when the QX60 already has 20-inch wheels and the goal is to stay with the correct wheel diameter and overall fitment type.
A 235/65R18 tire uses the same 235-millimeter section width, but with a 65-series aspect ratio on an 18-inch rim. For the 2015 Infiniti Trucks QX60, this is the radial fitment used with the smaller wheel diameter option. Its dimensions keep the overall tire height close to the 20-inch setup, but the sizing convention reflects a taller sidewall paired with the 18-inch wheel. This is the size to select when the vehicle is equipped with 18-inch wheels and the goal is to maintain the proper rim diameter and fitment relationship.
Fitment is straightforward across the covered 2015 Infiniti Trucks QX60 sub-models because both the Base and Hybrid use the same two radial tire sizes. What matters most is confirming the wheel diameter on the vehicle, since either sub-model may be equipped with 18-inch or 20-inch wheels.
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2015 Infiniti Trucks QX60 Base
The 2015 Infiniti Trucks QX60 Base uses the same two radial size paths seen across the model line, with fitment tied to either 18-inch or 20-inch wheels. Tire selection starts with confirming which wheel package is installed, then choosing a tire that matches the intended ride, appearance, and current vehicle setup.
The 2015 Infiniti Trucks QX60 Hybrid follows the same basic tire-fitment pattern as the Base model, using either 18-inch or 20-inch radial sizing. That makes wheel confirmation the first step, followed by checking that any replacement tire suits the vehicle's actual wheels, clearance, and everyday driving use.
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 2015 Infiniti Trucks QX60 usually need clarity on the two tire sizes, the difference between the 18-inch and 20-inch wheel setups, and what to inspect before replacing tires on a daily-driven or well-kept luxury crossover.
Tire Size & Fitment
What tire size fits a 2015 Infiniti Trucks QX60?
The 2015 Infiniti Trucks QX60 uses two primary tire sizes: 235/65R18 and 235/55R20. Both are radial sizes, and both the Base and Hybrid sub-models can use either one depending on the wheel package installed on the vehicle.
The important next step is confirming the actual wheel diameter before buying tires. A QX60 with 18-inch wheels needs 235/65R18, while a QX60 with 20-inch wheels needs 235/55R20. Since the two sizes use different rim diameters, they are not interchangeable without changing wheels as well.
What size rim does a 2015 Infiniti Trucks QX60 use?
A 2015 Infiniti Trucks QX60 uses either an 18-inch or 20-inch rim, depending on which tire size is on the vehicle. The 235/65R18 tire fits an 18-inch rim, and the 235/55R20 tire fits a 20-inch rim.
Checking the wheel itself is more useful than relying on model name alone, because both main sub-models can use either size. Tire size molded into the current sidewall is a quick reference point, but the wheel diameter should still be confirmed before replacement, especially if the QX60 has had wheels changed at some point.
Do all 2015 Infiniti Trucks QX60 sub-models use the same tire size?
The 2015 Infiniti Trucks QX60 Base and 2015 Infiniti Trucks QX60 Hybrid share the same two tire sizes: 235/65R18 and 235/55R20. In other words, sub-model alone does not narrow the fitment to one size, because both covered versions can use either wheel-and-tire combination.
That means the real fitment question is not Base versus Hybrid, but 18-inch wheels versus 20-inch wheels. Looking at the sidewall on the current tires, measuring wheel diameter, or verifying the installed wheel package will prevent ordering the wrong size and help keep overall fitment consistent with the vehicle's setup.
Choosing the Right Tire
What should I consider when choosing a tire for a 2015 Infiniti Trucks QX60?
Start with the correct size for the wheels currently on the vehicle, either 235/65R18 or 235/55R20. Since the 2015 Infiniti Trucks QX60 is a radial-only fitment here, the main selection factors are staying with the proper rim diameter, matching the intended use of the vehicle, and choosing a tire that suits everyday road driving.
After size is confirmed, look at the QX60's present condition and use pattern. A family vehicle that sees regular commuting may call for different priorities than one used lightly or seasonally. Wheel changes, suspension wear, or uneven tire wear should also be addressed so the replacement tire size works properly with the vehicle as it sits today.
How do I choose between 235/65R18 and 235/55R20 tires for a 2015 Infiniti Trucks QX60?
The choice between 235/65R18 and 235/55R20 is determined by wheel diameter, not personal preference alone. A 2015 Infiniti Trucks QX60 with 18-inch wheels uses 235/65R18, and one with 20-inch wheels uses 235/55R20. Each size is matched to its own rim diameter and should be treated as part of a complete wheel-and-tire setup.
Both sizes stay close in overall diameter, but they are built around different wheels. That means a buyer should not select between them as if they were alternate tires for the same rim. Confirm what is on the vehicle now, then compare replacement tires within that size rather than trying to cross over between the two fitments.
What does 235/55R20 mean on a 2015 Infiniti Trucks QX60?
On a 2015 Infiniti Trucks QX60, 235/55R20 means the tire is 235 millimeters wide, uses a 55-series aspect ratio, has radial construction, and fits a 20-inch wheel. It is a modern metric radial size, and each part of the code tells you something about width, profile, construction, and rim diameter.
Understanding that code helps prevent fitment mistakes. The most important part for wheel compatibility is the final number, because a 20-inch tire cannot be mounted on an 18-inch wheel. The profile and width also affect how the tire sits on the vehicle, so any replacement should match the QX60's actual wheel size and current clearance conditions.
Restoration & Appearance
Does correct tire fitment matter for a 2015 Infiniti Trucks QX60 restoration or preservation project?
Yes, correct tire fitment still matters on a 2015 Infiniti Trucks QX60, even though it is newer than a traditional collector car. Keeping the proper 235/65R18 or 235/55R20 size for the installed wheels helps preserve the vehicle's intended proportions and avoids a mismatched look that can come from incorrect diameter or profile.
Appearance is only part of the issue. Correct sizing also supports proper wheel compatibility and helps maintain the visual balance Infiniti intended for the QX60's crossover design. For an especially original or carefully preserved example, staying close to the established size and wheel package is usually a more disciplined approach than experimenting with unrelated sizes.
How does tire size affect the appearance of a 2015 Infiniti Trucks QX60?
Tire size has a visible effect on the stance of a 2015 Infiniti Trucks QX60 because the vehicle was fitted with either 18-inch or 20-inch wheel packages. The 235/65R18 size carries more sidewall around a smaller wheel, while the 235/55R20 pairs a lower-profile tire with a larger wheel face.
Both combinations are close in overall height, so the difference is more about presentation than a dramatic change in diameter. Buyers who want the vehicle to keep its established look should match the tire size to the wheels already on the QX60 and avoid creating a mixed setup that changes the visual balance from one corner to another.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2015 Infiniti Trucks QX60?
Yes, modifications can affect tire fitment on a 2015 Infiniti Trucks QX60. Wheel changes, altered offset, suspension lowering, replacement springs, or body modifications can all influence how a 235/65R18 or 235/55R20 tire sits within the wheel opening and how much clearance remains during steering and suspension movement.
A QX60 that is no longer on its original wheel setup should be checked carefully before replacement tires are chosen. Wheel diameter is only part of the equation, since width and positioning also matter. Turning clearance, inner-side clearance, and full-load suspension travel are all worth reviewing when the vehicle has been altered from stock form.
What should I inspect before driving a 2015 Infiniti Trucks QX60 on new tires?
Before driving a 2015 Infiniti Trucks QX60 on new tires, inspect the wheels for damage, confirm the installed tire size matches the wheel diameter, and check that the tires are seated and inflated properly. It is also smart to look over suspension and steering components if the old tires showed uneven wear.
A short road test should be used to watch for vibration, rubbing, pulling, or unusual noise. Tire pressure should be rechecked after installation, and the vehicle should be monitored for any sign of clearance issues on full turns or over bumps. Catching those problems early helps protect both the new tires and the QX60 itself.
How often should tires on a 2015 Infiniti Trucks QX60 be inspected?
Tires on a 2015 Infiniti Trucks QX60 should be inspected regularly, not just when tread appears low. Routine checks for pressure loss, irregular wear, cuts, bulges, and cracking are important on a vehicle like the QX60 because it may see family use, highway driving, and longer trips that place consistent demands on the tires.
Monthly visual inspections are a sensible habit, with closer attention before travel or seasonal use changes. Owners should also keep an eye on tire age, especially if the QX60 is driven less often than it once was. Good maintenance starts with the correct 18-inch or 20-inch fitment and continues with steady inspection over time.
