The 2017 Infiniti Trucks QX50 sits in the modern luxury crossover space, blending car-like road manners with a higher seating position and a sport-oriented stance. For owners, tire selection is less about vintage-style construction and more about confirming the exact wheel package already on the vehicle. This QX50 uses radial tires in either 225/55R18 or 245/45R19, so the first step is identifying whether it has 18-inch or 19-inch rims. Available choices in the 19-inch fitment lean toward blackwall performance-oriented radial designs from BFGoodrich and Nitto. That makes wheel verification, driving priorities, and overall fitment condition the key decisions before replacement.
Which Tire Size Is Right for The 2017 Infiniti Trucks QX50
Two tire sizes apply to the 2017 Infiniti Trucks QX50, and the choice depends on wheel diameter first. The vehicle uses radial construction in both 225/55R18 on an 18-inch rim and 245/45R19 on a 19-inch rim, with the QX50 Base appearing in either configuration. Before selecting a tire, confirm whether the crossover is wearing 18-inch or 19-inch wheels, especially if it has been changed from its original wheel setup.
225/55R18 is a metric radial size in which 225 identifies the nominal section width in millimeters, 55 is the aspect ratio, R denotes radial construction, and 18 is the wheel diameter in inches. On the 2017 Infiniti Trucks QX50, this size represents one of the primary modern fitments and points to an 18-inch wheel package. Its overall dimensions differ from the 19-inch option, so it should be chosen only when the vehicle is set up for this wheel diameter. The key step is confirming the actual wheel and current tire placard before replacement.
245/45R19 is a metric radial size where 245 is the nominal section width in millimeters, 45 is the aspect ratio, R indicates radial construction, and 19 is the rim diameter in inches. For the 2017 Infiniti Trucks QX50, this size belongs to the 19-inch wheel configuration and carries a lower-profile look than the 18-inch fitment. Available choices in this size include BFGoodrich and Nitto options, with blackwall sidewalls and performance-oriented series such as g-Force Comp 2 AS, g-Force Phenom T/A, and NT555 G2. This is the size to evaluate when the vehicle already has 19-inch wheels and the owner wants to compare series and specification differences.
Sub-model fitment is straightforward here, but wheel choice still matters. The 2017 Infiniti Trucks QX50 Base appears with both supported tire sizes, so the important step is confirming whether the vehicle has 18-inch or 19-inch rims before choosing a replacement tire.
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2017 Infiniti Trucks QX50 Base
The 2017 Infiniti Trucks QX50 Base uses radial tires and may be equipped with either the 18-inch or 19-inch fitment. That means tire selection starts with checking the wheel diameter already on the vehicle, then comparing the available tire options within the correct size.
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.
Best 2017 Infiniti Trucks QX50 Tires for Sale
Available 245/45R19 choices for the 2017 Infiniti Trucks QX50 include BFGoodrich and Nitto radial tires. The current assortment centers on blackwall performance-oriented series, with differences in rim-width compatibility, load specification, and tire series character rather than sidewall style.
These FAQs focus on the tire sizes used on the 2017 Infiniti Trucks QX50, how to confirm the correct wheel fitment, what distinguishes the available radial options, and what to inspect before regular road use.
Tire Size & Fitment
What tire size fits a 2017 Infiniti Trucks QX50?
The 2017 Infiniti Trucks QX50 uses one of two radial tire sizes: 225/55R18 or 245/45R19. Both sizes apply to this model, including the QX50 Base, and the correct choice depends on which wheel package is on the vehicle rather than on a bias-ply versus radial decision.
The most important check is the actual wheel diameter currently installed. A QX50 with 18-inch wheels needs the 225/55R18 fitment, while a 19-inch-wheel setup uses 245/45R19. If the vehicle has aftermarket wheels or has had tires changed previously, confirm the wheel and current tire markings before selecting a replacement.
What size rim does a 2017 Infiniti Trucks QX50 use?
The 2017 Infiniti Trucks QX50 uses either an 18-inch or 19-inch rim, depending on the tire size fitted to the vehicle. The 225/55R18 tire pairs with an 18-inch rim, and the 245/45R19 tire pairs with a 19-inch rim.
Wheel diameter should be confirmed before anything else because the two supported tire sizes are tied to different rim sizes. A tire marked for an 18-inch wheel cannot be mounted on a 19-inch rim, and vice versa. Checking the sidewall code on the current tire is usually the fastest way to verify what the vehicle is using now.
Why does the 2017 Infiniti Trucks QX50 have more than one tire size?
The 2017 Infiniti Trucks QX50 appears with two different wheel-and-tire packages, which is why both 225/55R18 and 245/45R19 are correct fitments for this model. The difference is tied to wheel diameter and tire profile, not to a change from one construction type to another.
That matters because tire replacement is determined by the wheel setup already on the vehicle. One QX50 Base may be running the 18-inch fitment, while another uses the 19-inch option. Matching the existing wheel diameter and reviewing the current sidewall markings helps avoid ordering the wrong size for the crossover.
Choosing the Right Tire
What should I consider when choosing a 245/45R19 tire for a 2017 Infiniti Trucks QX50?
Start with the correct size and construction, then compare the specific characteristics of the available 245/45R19 radials. For the 2017 Infiniti Trucks QX50, current choices in this size include blackwall performance-oriented tires from BFGoodrich and Nitto, with differences in tire series, rim-width specification, and load figures where stated.
The right choice depends on how the QX50 is used and how closely the wheel setup matches the tire's intended fitment range. It helps to compare the actual wheel width, review sidewall and tread style preferences, and check whether a given tire's specifications suit the vehicle's use before settling on one 245/45R19 option.
What brands offer tires for the 2017 Infiniti Trucks QX50?
BFGoodrich and Nitto offer tire options for the 2017 Infiniti Trucks QX50 in the 245/45R19 fitment. Within that size, BFGoodrich appears in more than one series, while Nitto is represented by the NT555 G2, giving owners a few distinct radial choices rather than a single product path.
Brand alone should not decide the purchase. It is more useful to compare the exact tire series, the wheel-width compatibility where stated, and the overall type of driving the QX50 sees. Once the correct size is confirmed, those differences help narrow the choice to a tire that matches the vehicle's wheel setup and road use.
What tire series are available for the 2017 Infiniti Trucks QX50?
In the 245/45R19 fitment for the 2017 Infiniti Trucks QX50, available tire series include BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2. All are radial blackwall offerings, but they give the owner a choice among distinct modern tire lines within the same size category.
Series names matter because they help separate one tire's intended character from another even when the size remains the same. After confirming the QX50 is on 19-inch wheels, compare the series details alongside wheel-width compatibility and any stated load specifications. That makes it easier to choose a tire that suits the crossover's actual setup.
Restoration & Appearance
Does correct tire fitment matter for a 2017 Infiniti Trucks QX50 restoration?
Yes, correct tire fitment still matters on a 2017 Infiniti Trucks QX50, even though it is a modern vehicle rather than a classic restoration piece. The main concern is preserving the proper wheel-and-tire relationship by matching either 225/55R18 or 245/45R19 to the wheel package already on the vehicle.
Appearance and stance can change noticeably when the wrong size is used, especially if the aspect ratio or wheel diameter no longer matches the intended setup. Owners aiming for a clean, stock-style presentation should verify the existing wheel size, compare current tire markings, and avoid assuming that one QX50 configuration automatically uses the same tires as another.
How does tire construction affect the appearance of a restored 2017 Infiniti Trucks QX50?
Tire construction is straightforward on the 2017 Infiniti Trucks QX50 because both supported primary sizes are radial. That means appearance differences are shaped more by wheel diameter, sidewall height, and the specific tire series than by a bias-ply versus radial visual contrast.
A QX50 on 225/55R18 has a different visual balance than one on 245/45R19, even though both are modern radial fitments. Owners focused on a stock-style look should match the current wheel package and choose a tire whose sidewall presentation and overall proportions suit the vehicle, rather than changing sizes simply for a different appearance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2017 Infiniti Trucks QX50?
Yes, modifications can affect tire fitment on a 2017 Infiniti Trucks QX50. Changes such as aftermarket wheels, altered wheel width, suspension lowering, or body modifications can influence whether the vehicle still works properly with 225/55R18 or 245/45R19 and how much clearance remains around the tire.
Owners should check the actual wheel diameter and width first, then look at clearance during steering and suspension movement. Even when the tire size matches one of the supported QX50 fitments, a changed wheel or suspension setup can alter the result. A careful visual inspection before replacement helps prevent rubbing, interference, or other avoidable fitment issues.
What should I inspect before driving a 2017 Infiniti Trucks QX50 on new tires?
Before regular road use, inspect tire pressure, sidewall condition, tread seating, and wheel hardware on the 2017 Infiniti Trucks QX50. It is also wise to confirm that all four tires match the intended size for the wheel setup and that there are no visible cuts, bulges, or signs of mounting damage.
A short initial drive should be followed by another quick check for air loss, unusual vibration, and any sign of contact inside the wheelwell. Owners should also confirm that steering feels normal and that the tires clear properly at full lock. Those checks are especially important if the QX50 has changed wheels or has been sitting for an extended period.
How often should tires on a 2017 Infiniti Trucks QX50 be inspected?
Tires on a 2017 Infiniti Trucks QX50 should be inspected regularly, not just when tread looks worn. A routine visual check for pressure loss, uneven wear, cracking, punctures, and sidewall damage helps catch issues early, especially on a vehicle that may alternate between daily use and longer periods of limited driving.
Monthly checks are a practical habit, with added inspections before highway trips or after striking potholes or debris. It also helps to review the tires any time handling changes or vibration develops. Staying consistent with inspection matters just as much as choosing the correct 225/55R18 or 245/45R19 size in the first place.
