The 2015 Infiniti Trucks QX80 sits in the full-size luxury SUV class, blending imposing truck-based presence with the upscale ride, cabin space, and highway comfort buyers expect from Infiniti’s flagship utility vehicle. Its size and stance make tire fitment especially important, because wheel diameter and tire profile shape both appearance and everyday usability. This model uses radial tire fitments in either 275/60R20 or 275/50R22, depending on the exact configuration. That means the main decision is not simply choosing a tire brand, but confirming whether the vehicle is on 20-inch or 22-inch wheels. For any QX80 that has changed wheels over time, checking the actual wheel setup comes first.
Which Tire Size Is Right for The 2015 Infiniti Trucks QX80
The 2015 Infiniti Trucks QX80 uses two primary tire sizes, and the difference comes down to wheel diameter and sub-model fitment. Both sizes are radial, but one fits a 20-inch wheel and the other fits a 22-inch wheel, so the first step is confirming the exact sub-model and the actual wheels currently on the vehicle before choosing a tire.
275/50R22 is a metric radial size in which 275 identifies the nominal section width in millimeters, 50 is the aspect ratio, R indicates radial construction, and 22 is the rim diameter in inches. On the 2015 Infiniti Trucks QX80, this size is tied to the 22-inch wheel setup and appears on both the Base and Limited sub-models. Its dimensions give the QX80 a large-wheel luxury SUV presentation while staying within the fitment family used for this vehicle. This is the size to evaluate when the QX80 already rides on 22-inch wheels and clearance, wheel width, and overall setup remain consistent with that configuration.
275/60R20 is a metric radial size where 275 is the nominal section width in millimeters, 60 is the aspect ratio, R marks radial construction, and 20 identifies the rim diameter in inches. On the 2015 Infiniti Trucks QX80, this size belongs to the 20-inch wheel configuration and applies to the Base sub-model. Its overall dimensions stay very close to the 22-inch fitment, but the tire and wheel package is built around a different rim diameter. This is the size to use when the vehicle has the 20-inch wheel setup rather than the 22-inch package.
Sub-model fitment matters on the 2015 Infiniti Trucks QX80 because tire size is not the same across every version. The most important check is whether the vehicle is a Base or Limited model and whether it currently wears 20-inch or 22-inch wheels.
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2015 Infiniti Trucks QX80 Base
The 2015 Infiniti Trucks QX80 Base can use either of the two primary radial tire sizes, depending on which wheel package is on the vehicle. Tire selection starts with confirming whether the Base model has 20-inch or 22-inch wheels, then choosing within that correct size rather than treating both fitments as interchangeable.
The 2015 Infiniti Trucks QX80 Limited uses the 275/50R22 radial fitment. That makes wheel confirmation more straightforward on a stock Limited, though any vehicle with changed wheels should still be checked carefully before replacing tires.
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
QX80 owners usually need to confirm the correct tire size first, especially when Base models may be on either 20-inch or 22-inch wheels. The questions below cover size meaning, sub-model fitment, wheel checks, tire selection, and practical inspection points before road use.
Tire Size & Fitment
What tire size fits a 2015 Infiniti Trucks QX80?
The 2015 Infiniti Trucks QX80 uses either 275/50R22 or 275/60R20, and both are radial tire sizes. The Base model can be found with either size, while the Limited uses 275/50R22. The difference is tied to the wheel package rather than a change from radial to bias-ply construction.
Choosing correctly starts with the actual wheels on the vehicle. A QX80 on 20-inch rims needs the 275/60R20 fitment, while a QX80 on 22-inch rims uses 275/50R22. If the SUV has had wheel changes over time, verify the current rim diameter before replacing tires.
What size rim does a 2015 Infiniti Trucks QX80 use?
A 2015 Infiniti Trucks QX80 uses either a 20-inch or 22-inch rim, depending on the tire size and configuration. The 275/60R20 fitment is built for a 20-inch wheel, and the 275/50R22 fitment is built for a 22-inch wheel. Both are radial setups for this model.
That rim difference is the key fitment decision on this vehicle. Tire size and wheel diameter have to match exactly, so a 20-inch tire cannot be mounted on a 22-inch wheel, and the reverse is also true. A quick check of the sidewall and the wheel itself helps avoid ordering the wrong size.
Do all 2015 Infiniti Trucks QX80 sub-models use the same tire size?
No, not every 2015 Infiniti Trucks QX80 sub-model uses the same tire size. The Limited uses 275/50R22, while the Base can use either 275/50R22 or 275/60R20. Both fitments are radial, but they are tied to different wheel diameters.
That means sub-model name alone is helpful, but it is not always the final answer on a Base vehicle. The practical step is to confirm the exact wheel diameter currently installed. Once the wheel size is verified, the correct tire size becomes clear and the rest of the selection process is much more straightforward.
Choosing the Right Tire
What should I consider when choosing a tire for a 2015 Infiniti Trucks QX80?
Start with the correct primary size for the vehicle’s wheel package: 275/60R20 for the 20-inch setup or 275/50R22 for the 22-inch setup. Since both QX80 fitments are radial, the main decision is not construction type but correct size, wheel match, and the intended use of the SUV.
A road-focused luxury SUV like the QX80 benefits from careful attention to overall fitment rather than guessing by appearance. Check the wheel diameter first, then compare the tire’s suitability for daily driving, highway use, load needs, and the current condition of the vehicle’s suspension and alignment before making a final choice.
How do I choose between the available 2015 Infiniti Trucks QX80 tire sizes?
The two tire sizes for the 2015 Infiniti Trucks QX80 are not preference-based alternatives on the same wheel. They correspond to different rim diameters, with 275/60R20 for 20-inch wheels and 275/50R22 for 22-inch wheels. The Limited uses the 22-inch fitment, while the Base may use either setup.
Selection begins with identifying the wheel already on the vehicle, not choosing whichever size seems close. The two sizes have similar overall dimensions, but they mount on different rims. That makes wheel confirmation, especially on a used or modified QX80, more important than comparing the two sizes as substitutes.
What does 275/50R22 mean on a 2015 Infiniti Trucks QX80?
On a 2015 Infiniti Trucks QX80, 275/50R22 is a metric radial size. The 275 refers to nominal section width in millimeters, 50 is the aspect ratio, R means radial construction, and 22 is the wheel diameter in inches. It is the size used on the QX80’s 22-inch wheel setup.
Understanding that code helps separate width, profile, and wheel size instead of treating the whole marking as one label. The last number is especially important because it has to match the rim exactly. For a QX80 owner, that makes the 22-inch designation the most critical confirmation point before buying replacement tires.
Restoration & Appearance
Does correct tire fitment matter for a 2015 Infiniti Trucks QX80 restoration or preservation project?
Yes, correct tire fitment still matters on a 2015 Infiniti Trucks QX80 even though it is a newer luxury SUV rather than an older collector car. Using the proper 275/50R22 or 275/60R20 size keeps the vehicle aligned with its intended wheel package and preserves the stance that belongs with that setup.
Appearance and fitment work together on a large SUV like the QX80. A preservation-minded owner should verify the original wheel diameter currently on the truck and avoid guessing by visual proportion alone. Keeping the correct size also helps prevent unnecessary clearance questions when maintaining a clean, stock-style presentation.
Which tire size suits a stock-style 2015 Infiniti Trucks QX80 appearance?
A stock-style appearance starts with the tire size that matches the wheel package already on the 2015 Infiniti Trucks QX80. That means 275/60R20 on 20-inch wheels or 275/50R22 on 22-inch wheels. Each size supports the visual balance intended for that specific rim diameter.
The practical goal is to preserve the relationship between sidewall height and wheel size rather than mixing formats loosely. On a Base model, either fitment may be correct depending on the wheels installed. A Limited owner will usually be focused on maintaining the 275/50R22 setup and the look that goes with it.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2015 Infiniti Trucks QX80?
Yes, modifications can affect tire fitment on a 2015 Infiniti Trucks QX80. Aftermarket wheels, suspension changes, altered ride height, or body modifications can all change how a 275/50R22 or 275/60R20 tire sits in the wheel opening. Even when the size matches the rim, the full vehicle setup still matters.
A modified QX80 should be checked for wheel width, steering clearance, suspension travel, and fender room before replacement tires are chosen. Tire size alone does not tell the whole story once the vehicle has moved away from stock hardware. Careful inspection helps avoid rubbing, clearance surprises, and mismatched wheel-and-tire combinations.
What should I inspect before driving a 2015 Infiniti Trucks QX80 on new tires?
Before driving a 2015 Infiniti Trucks QX80 on new tires, inspect the wheels for the correct 20-inch or 22-inch diameter, confirm proper inflation, and look over the alignment and suspension condition. It is also smart to check for any signs of rubbing, uneven wear on the old tires, or damage to the wheel itself.
A large luxury SUV places real demands on its tire and wheel package, so a quick installation check is worthwhile. Make sure the tires seat properly, the valve stems are in good condition, and the vehicle tracks cleanly on the road. Early inspection can catch setup issues before they become wear problems.
How often should tires on a 2015 Infiniti Trucks QX80 be inspected?
Tires on a 2015 Infiniti Trucks QX80 should be inspected regularly, not just when replacement time arrives. Frequent checks for tread wear, cuts, sidewall damage, punctures, and air loss are especially important on a heavy SUV. Pressure should also be monitored consistently so the tire keeps its intended shape and contact patch.
A practical routine is to inspect the tires during regular cleaning, before longer trips, and any time the QX80 develops vibration or steering changes. Uneven wear can point to alignment or suspension issues rather than a tire problem alone. Catching those signs early helps protect both ride quality and tire life.
