The 2014 Infiniti Trucks QX50 sits in the early luxury crossover period when car-like handling, all-season road manners, and upscale trim mattered as much as utility. Its compact luxury shape and sport-oriented stance make tire choice more than a simple replacement exercise, especially when wheel size changes by trim. This model uses radial tire fitments in either 225/55R18 or 245/45R19, depending on sub-model and wheel setup. That means the real decision is confirming whether your QX50 runs the 18-inch or 19-inch package, then comparing the tire choices available within that exact size. Owners focused on ride, appearance, and everyday road use should start with fitment accuracy before comparing tread and brand options.
Which Tire Size Is Right for The 2014 Infiniti Trucks QX50
The 2014 Infiniti Trucks QX50 uses two primary tire sizes, and the difference comes down to sub-model and wheel diameter. Both are radial fitments, but one uses an 18-inch rim and the other uses a 19-inch rim, so the first step is confirming the exact sub-model and the actual wheels currently on the vehicle before choosing a tire.
225/55R18 is a metric radial size in which 225 identifies nominal section width in millimeters, 55 is the aspect ratio, R denotes radial construction, and 18 is the rim diameter in inches. On the 2014 Infiniti Trucks QX50, this size supports the factory-style 18-inch wheel setup used across covered fitments. It is the key size to confirm for Base models and also appears on Journey trim applications. Choosing this size starts with verifying the vehicle still carries 18-inch wheels, especially if it has seen wheel upgrades or other appearance changes over time.
245/45R19 is a metric radial size with a 245 millimeter nominal section width, a 45-series profile, and a 19-inch rim diameter. For the 2014 Infiniti Trucks QX50, this size belongs to the 19-inch wheel configuration rather than the 18-inch setup, so wheel confirmation is essential before selection. Available choices in this size include BFGoodrich and Nitto products, all in Blackwall form, with 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 is equipped with the larger wheel package and a lower-profile tire presentation.
Sub-model fitment matters on the 2014 Infiniti Trucks QX50 because tire size is not completely uniform across the lineup. The Base model stays with one wheel-and-tire setup, while Journey applications can appear with either of the two primary sizes, making wheel confirmation especially important.
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2014 Infiniti Trucks QX50 Base
The 2014 Infiniti Trucks QX50 Base uses a single radial tire fitment, which keeps replacement selection relatively straightforward once the original wheel setup is still in place. The main priority is matching that exact size and confirming the vehicle has not been changed to a different wheel diameter since new.
The 2014 Infiniti Trucks QX50 Journey can use either of the two primary radial sizes, so tire selection begins with identifying whether the vehicle has the 18-inch or 19-inch wheel package. That makes the actual wheel on the vehicle more important than trim badge alone when it is time to replace 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.
Best 2014 Infiniti Trucks QX50 Tires for Sale
Available 245/45R19 choices for the 2014 Infiniti Trucks QX50 include BFGoodrich and Nitto radial tires in Blackwall form. The product grid is most useful for comparing tire series, rim-width compatibility where stated, weight, and load-related specifications within the correct 19-inch fitment.
These FAQs focus on the exact tire sizes used on the 2014 Infiniti Trucks QX50, how the Base and Journey fitments differ, and what to check when comparing 18-inch and 19-inch tire options for road use.
Tire Size & Fitment
What tire size fits a 2014 Infiniti Trucks QX50?
The 2014 Infiniti Trucks QX50 uses two primary radial tire sizes: 225/55R18 and 245/45R19. The Base model uses 225/55R18, while the Journey can be found with either 225/55R18 or 245/45R19 depending on its wheel setup.
That means the correct size is determined by the exact sub-model and, just as importantly, the actual wheel diameter on the vehicle now. Checking the sidewall on the current tire and confirming whether the QX50 has 18-inch or 19-inch wheels is the safest way to narrow the selection before comparing brands or tire series.
What size rim does a 2014 Infiniti Trucks QX50 use?
A 2014 Infiniti Trucks QX50 uses either an 18-inch or 19-inch rim, depending on which primary tire size is on the vehicle. The 225/55R18 fitment uses an 18-inch rim, and the 245/45R19 fitment uses a 19-inch rim.
Rim diameter needs to match the tire size exactly, so an 18-inch tire cannot be mounted on a 19-inch wheel, and the reverse is also true. Since Journey models can appear with either setup, the practical step is to verify the wheel before ordering tires, especially on vehicles that may have been upgraded or changed by a previous owner.
Do all 2014 Infiniti Trucks QX50 sub-models use the same tire size?
No, the 2014 Infiniti Trucks QX50 does not use one tire size across every covered sub-model. The Base model uses 225/55R18, while the Journey can use either 225/55R18 or 245/45R19.
That variation matters because the two sizes also use different rim diameters, so this is not just a minor sizing difference. Anyone replacing tires on a Journey should confirm the current wheel package first, then match the tire to that setup rather than assuming every QX50 from this model year uses the same size.
Choosing the Right Tire
What should I consider when choosing a tire for a 2014 Infiniti Trucks QX50?
Start with the correct primary size for the vehicle: 225/55R18 or 245/45R19. From there, the main selection factors are wheel diameter, radial construction, intended road use, and whether the vehicle still carries its original wheel setup or has been changed to a different package.
On a QX50 running 245/45R19, available choices also differ by brand, tire series, rim-width specification where stated, weight, and load-related details. A useful approach is to confirm the exact size first, then compare the available tires in that size based on how the vehicle is driven and the type of ride and appearance you want.
What brands offer tires for the 2014 Infiniti Trucks QX50?
In the available 245/45R19 fitment for the 2014 Infiniti Trucks QX50, tire choices come from BFGoodrich and Nitto. Those options stay within radial construction and are offered in several distinct performance-oriented series rather than as one uniform replacement.
Brand alone should not be the only deciding factor. It is better to compare the exact tire series, sidewall style, and any stated rim-width or load-related specifications that apply to your wheel setup. That helps narrow the choice to a tire that matches both the vehicle's fitment and the way the QX50 is actually used.
What tire series are available for the 2014 Infiniti Trucks QX50?
For the 245/45R19 size used on some 2014 Infiniti Trucks QX50 applications, available series include BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2. Each is a radial tire built for the 19-inch fitment rather than a one-size-fits-all crossover replacement.
Comparing tire series is helpful because it gives a clearer picture of the choices inside the correct size. Once the wheel diameter and tire size are confirmed, the next step is reviewing details such as sidewall presentation, any stated rim-width range, weight, and load-related information so the selected tire suits the QX50's actual setup.
Restoration & Appearance
Does correct tire fitment matter for a 2014 Infiniti Trucks QX50 restoration?
Yes, correct tire fitment still matters on a 2014 Infiniti Trucks QX50, even though it is a newer vehicle than traditional collector-era restorations. The right size preserves the intended relationship between tire profile, wheel diameter, and the vehicle's overall stance, whether the QX50 uses 225/55R18 or 245/45R19.
Appearance and fitment go together, especially on a luxury crossover where wheel-and-tire proportion strongly affects how the vehicle presents. Anyone returning the vehicle to a factory-style look should confirm the exact wheel package first, then choose a tire that matches that setup rather than mixing sizes that alter the visual balance.
How does tire construction affect the appearance of a restored 2014 Infiniti Trucks QX50?
The 2014 Infiniti Trucks QX50 uses radial tire fitments, so construction changes are not really a bias-ply-versus-radial issue here. Appearance is shaped more by choosing the correct size and profile, since the 18-inch and 19-inch setups create noticeably different visual proportions on the vehicle.
A restoration-oriented or factory-style presentation depends on matching the wheel diameter and tire profile the vehicle was built around. On this QX50, that means keeping the proper 225/55R18 or 245/45R19 relationship in place and avoiding substitutions that change the sidewall height enough to alter the crossover's intended stance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2014 Infiniti Trucks QX50?
Yes, modifications can affect tire fitment on a 2014 Infiniti Trucks QX50. Changes such as aftermarket wheels, altered wheel width, suspension lowering, or body modifications can all influence which tire size works properly, even when the vehicle originally used 225/55R18 or 245/45R19.
A modified QX50 should be checked for actual wheel diameter, wheel width, and clearance at full steering lock and normal suspension travel before replacement tires are chosen. That is especially important on Journey models, where the vehicle may already have either the 18-inch or 19-inch setup before any later changes are considered.
What should I inspect before driving a 2014 Infiniti Trucks QX50 on new tires?
Before driving a 2014 Infiniti Trucks QX50 on new tires, inspect wheel condition, confirm the tire size matches the wheel diameter, and make sure the tires are mounted and inflated properly. It is also smart to look over the suspension and steering for worn parts that could affect tire wear or road manners.
A short check for fender and inner-clearance issues is worthwhile any time the vehicle has different wheels, replacement-size changes, or prior modifications. After installation, monitor pressure and recheck for uneven wear, vibration, or rubbing so any fitment or mechanical issue is caught early rather than after extended driving.
How often should tires on a 2014 Infiniti Trucks QX50 be inspected?
Tires on a 2014 Infiniti Trucks QX50 should be inspected regularly, not just when tread looks low. Routine checks should include pressure, visible tread wear, sidewall cuts, bulges, cracking, and any sign of slow air loss, whether the vehicle uses 225/55R18 or 245/45R19.
Inspection becomes even more important when the QX50 is driven infrequently, parked for long stretches, or fitted with lower-profile 19-inch tires that may show road-impact damage more clearly. A quick visual check before longer trips and periodic close inspection at service intervals helps catch age, wear, and fitment-related issues before they become bigger problems.
