The 2015 Infiniti Trucks QX70 sits in the modern luxury crossover space, but its fastback profile and sport-oriented stance gave it a more driver-focused character than many utility vehicles of its era. Buyers looking at one today are often balancing appearance, handling, and everyday road use rather than strict restoration concerns. Tire selection starts with two radial fitments for the 2015 Infiniti Trucks QX70: 265/50R20 and 265/60R18. Those sizes keep nearly the same overall diameter while pairing with different wheel diameters, so the real decision begins with confirming which wheel package is on the vehicle before comparing tire options and intended use.
Which Tire Size Is Right for The 2015 Infiniti Trucks QX70
The 2015 Infiniti Trucks QX70 uses two primary tire sizes, and both are radial fitments. The key difference is wheel diameter: one size is built for an 18-inch rim and the other for a 20-inch rim. Before choosing a tire, confirm which wheel setup is actually on the vehicle, since that determines the correct size more than anything else.
265/50R20 is a metric radial size. The 265 identifies nominal section width in millimeters, the 50 is the aspect ratio, R indicates radial construction, and 20 is the wheel diameter in inches. On the 2015 Infiniti Trucks QX70, this size suits the 20-inch wheel setup and supports the lower-profile look associated with a larger rim package. It is the right size to evaluate when the vehicle already wears 20-inch wheels and you want to preserve the intended wheel-to-tire relationship, overall stance, and fitment geometry tied to that package.
265/60R18 is also a metric radial size. It carries the same nominal 265-millimeter section width as the 20-inch fitment, but the 60-series profile works with an 18-inch wheel instead. For the 2015 Infiniti Trucks QX70, this size belongs to the 18-inch wheel package rather than the 20-inch setup. It is the size to use when the vehicle has 18-inch wheels installed and you want to keep the proper relationship between wheel diameter, tire profile, and the clearance package designed around that configuration.
Sub-model fitment is straightforward here because the covered QX70 Base can use either of the two primary radial tire sizes. What matters most is not trim identification, but confirming whether the vehicle has the 18-inch or 20-inch wheel setup before selecting a tire.
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2015 Infiniti Trucks QX70 Base
The 2015 Infiniti Trucks QX70 Base can use either 265/50R20 or 265/60R18, both in radial construction. Tire choice starts with the wheels currently on the vehicle, then moves to the profile and driving priorities that match that wheel package.
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
Tire questions for the 2015 Infiniti Trucks QX70 usually come down to wheel diameter, correct metric sizing, and how to choose between the two factory-style radial fitments. The FAQs below focus on size meaning, rim compatibility, selection priorities, and road-use checks.
Tire Size & Fitment
What tire size fits a 2015 Infiniti Trucks QX70?
The 2015 Infiniti Trucks QX70 uses two primary tire sizes: 265/50R20 and 265/60R18. Both are radial tires, but they do not serve the same wheel package. The 265/50R20 size is for a 20-inch rim, while the 265/60R18 size is for an 18-inch rim.
Choosing between them starts with the wheels actually mounted on the vehicle, not preference alone. Even though the two sizes have very similar overall diameter, the rim diameter is different, so an 18-inch tire cannot be used on a 20-inch wheel and a 20-inch tire cannot be used on an 18-inch wheel.
What size rim does a 2015 Infiniti Trucks QX70 use?
A 2015 Infiniti Trucks QX70 uses either an 18-inch or 20-inch rim, depending on which tire size is on the vehicle. The 265/60R18 tire is built for an 18-inch wheel, and the 265/50R20 tire is built for a 20-inch wheel. Both fitments are radial.
Rim diameter should be confirmed before any tire purchase, especially if the vehicle has changed hands or has aftermarket wheels. Checking the sidewall size and verifying the wheel itself helps prevent ordering the wrong diameter, and it also gives a better starting point for evaluating profile, appearance, and clearance.
Why does the 2015 Infiniti Trucks QX70 have more than one tire size?
The 2015 Infiniti Trucks QX70 has more than one tire size because it was paired with different wheel diameters. One fitment uses 265/60R18 on an 18-inch rim, and the other uses 265/50R20 on a 20-inch rim. Both are radial sizes with closely matched overall diameter.
That means the difference is primarily in wheel package and tire profile rather than a dramatic change in tire height. A buyer should confirm the current wheel setup first, then stay with the size intended for that rim diameter unless the vehicle is being carefully reconfigured with attention to wheel specs and clearance.
Choosing the Right Tire
What should I consider when choosing a 265/50R20 tire for a 2015 Infiniti Trucks QX70?
A 265/50R20 tire for a 2015 Infiniti Trucks QX70 should match the vehicle's 20-inch wheel setup and preserve the intended size relationship for that package. The main selection factors are correct size, radial construction, intended driving use, and compatibility with the wheel width and overall vehicle setup already in place.
Beyond the size itself, look at how the QX70 is used. A vehicle driven regularly on highways may call for a different balance than one used mostly for occasional local driving. Wheel condition, alignment, suspension wear, and any prior modifications should be checked so the tire choice supports proper fitment and even wear.
How do I choose between the available tire sizes for a 2015 Infiniti Trucks QX70?
Choosing between 265/50R20 and 265/60R18 on a 2015 Infiniti Trucks QX70 is mainly a matter of wheel diameter. The 265/50R20 belongs on a 20-inch rim, while the 265/60R18 belongs on an 18-inch rim. Both are correct radial sizes when matched to the proper wheel package.
The decision should not be made by appearance alone if the vehicle already has wheels installed. Confirm the current wheel diameter, inspect the wheel width and overall condition, and then stay with the corresponding tire size. That approach keeps the selection focused on fitment first instead of trying to force a tire onto the wrong rim.
What rim-fitment details should I compare when choosing 2015 Infiniti Trucks QX70 tires?
The first rim-fitment detail to compare is diameter, because the 2015 Infiniti Trucks QX70 uses both 18-inch and 20-inch wheel packages. After that, wheel width and the condition of the wheel itself matter, since the tire needs to match the rim properly to support stable mounting and normal road use.
Offset and aftermarket wheel changes can also affect how a tire sits inside the fender opening and how it clears suspension or steering components. A careful check of the current wheel setup helps prevent fitment problems, especially on a used QX70 where the original wheels may have been replaced at some point.
Restoration & Appearance
Does correct tire fitment matter for a 2015 Infiniti Trucks QX70 restoration or preservation project?
Correct tire fitment still matters on a 2015 Infiniti Trucks QX70, even though the focus is usually preservation or proper upkeep rather than vintage restoration. Using the right primary size for the wheel package helps maintain the vehicle's intended stance, proportion, and road manners. On this model, that means matching 265/50R20 to a 20-inch rim or 265/60R18 to an 18-inch rim.
A preservation-minded buyer should look at the current wheel setup before replacing tires, especially if the vehicle has had wheel changes over time. Keeping the proper size relationship avoids an off-balance appearance and reduces the chance of clearance or mounting issues that can come from forcing a mismatched tire diameter.
How does tire profile affect the appearance of a 2015 Infiniti Trucks QX70?
Tire profile has a noticeable effect on how a 2015 Infiniti Trucks QX70 presents visually. The 265/50R20 fitment places a shorter sidewall on a larger wheel, while the 265/60R18 fitment uses a taller sidewall with a smaller rim. Both belong to this model, but they create a different visual balance around the wheel opening.
That difference matters if maintaining the vehicle's intended look is part of the goal. A buyer preserving an existing wheel package should stay with the matching tire size rather than chasing a different appearance through an incorrect fitment. Wheel diameter and sidewall profile work together, so the tire should support the setup already on the vehicle.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2015 Infiniti Trucks QX70?
Modifications can absolutely affect tire fitment on a 2015 Infiniti Trucks QX70. Aftermarket wheels, changes in wheel offset, suspension alterations, lowering, or body modifications can all change the way either 265/50R20 or 265/60R18 sits in the vehicle. Even when the tire size itself is correct, the surrounding setup may no longer match stock geometry.
That is why a modified QX70 should be inspected as a whole rather than by tire size alone. Steering clearance, fender clearance, wheel width, and suspension condition all matter. A quick check before replacement helps prevent rubbing, uneven wear, or a tire choice that suits the size chart but not the actual vehicle.
What should I inspect before driving a 2015 Infiniti Trucks QX70 on new tires?
Before driving a 2015 Infiniti Trucks QX70 on new tires, inspect the wheels for damage, confirm the tire size matches the rim diameter, and make sure inflation is set correctly for the application. It also helps to check alignment condition, valve stems, and overall suspension health so the new tires start their service life on a sound platform.
A short visual review after installation is just as important. Look for any sign of contact at full steering lock, verify that the tires seat evenly, and pay attention to vibration or pull during the first drive. Catching those issues early helps protect the new tires and gives the QX70 a better chance of wearing them evenly.
What should I check before a longer drive in a 2015 Infiniti Trucks QX70?
Before a longer drive in a 2015 Infiniti Trucks QX70, check tire pressure, tread condition, visible sidewall damage, and any signs of irregular wear. Whether the vehicle uses 265/50R20 or 265/60R18, the basics still matter: proper inflation, no cuts or bulges, and no unexplained air loss. Those quick checks are especially valuable on a vehicle that may not be driven every day.
Age and storage conditions deserve attention too, even on modern radial tires. A QX70 that spends long periods parked can develop issues that are easy to miss at a glance. A careful inspection before highway use helps catch problems early and gives time to address alignment, rotation, or wheel-condition concerns before the trip begins.
