2014 Infiniti Trucks Tire Fitment Guide

2014 Infiniti Trucks vehicles use nine sizes across four models. The QX50 uses 225/55R18 or 245/45R19, the QX60 uses 235/55R20 or 235/65R18, the QX70 uses 265/50R20, 265/60R18, or 265/45R21, and the QX80 uses 275/50R22 or 275/60R20. These sizes do not interchange across the full model range, and the lineup spans 18-inch through 22-inch rim diameters.

That spread means the first priority is identifying the exact model and wheel package before comparing brands or tread designs. Even within one model, Infiniti offered more than one rim diameter, so checking the sidewall on the vehicle now is often the quickest way to confirm what belongs on your truck or crossover before moving to a model-specific page.

On a 2014 Infiniti Trucks tire, 245/45R19 is a metric radial size code. The 245 is the nominal section width in millimeters, 45 is the aspect ratio, the R means radial construction, and 19 is the wheel diameter in inches. On this year and make, that size applies to the QX50 with the 19-inch wheel package.

Reading the code correctly helps prevent ordering a tire that matches the width but not the wheel diameter or profile. It also explains why a QX50 running 245/45R19 cannot simply swap to an 18-inch fitment without changing wheels, even though both sizes belong to the same model family.

No, 2014 Infiniti Trucks models do not use the same tire size. Each model has its own size group, and some models also have multiple factory wheel-package fitments. The QX50 uses two sizes, the QX60 uses two, the QX70 uses three, and the QX80 uses two, with rim diameters ranging from 18 to 22 inches across the lineup.

That matters because year and make alone are not enough for tire selection on this range. A QX70 owner and a QX80 owner may both see 20-inch tires on the vehicle, but the widths and profiles are different, so confirming the exact model and sidewall size is more important than comparing the trucks only by appearance.

Among the currently covered 2014 Infiniti Trucks products, 245/45R19 appears in Blackwall form. That fits the modern luxury-crossover look Infiniti used in this era, where clean sidewalls and contemporary wheel designs were part of the overall appearance. No whitewall or vintage-style sidewall treatment is part of this fitment group.

For most 2014 Infiniti Trucks owners, that means the choice is less about period-style sidewall presentation and more about selecting the correct size, service rating, and intended driving character. If your vehicle uses a different size than 245/45R19, compare the exact sidewall style available in that size before matching a replacement set for appearance consistency.

BFGoodrich and Nitto both cover 2014 Infiniti Trucks in 245/45R19. BFGoodrich appears with g-Force Comp-2 A/S and g-Force Phenom T/A options, while Nitto appears with the NT555 G2. All three are radial Blackwall tires intended for the QX50 fitment that uses a 19-inch wheel.

Brand choice here comes after fitment choice, not before it. If your 2014 Infiniti Trucks vehicle uses 245/45R19, you can compare BFGoodrich and Nitto within the same basic size; if it uses another size, start with the correct model and wheel package first so you are comparing tires that actually match your vehicle.

For 2014 Infiniti Trucks in 245/45R19, the BFGoodrich g-Force Comp-2 A/S and BFGoodrich g-Force Phenom T/A share the same nominal size, radial construction, Blackwall styling, and a 19-inch rim diameter. The Comp-2 A/S carries a 98W service description, while the Phenom T/A carries a 102Y service description and a published maximum load of 1,874 pounds at 50 psi. Their weights are also close, at 29 pounds for the Comp-2 A/S and 29.26 pounds for the Phenom T/A.

That means the practical comparison centers on service description and how closely you want to match your use case within the same QX50 size. Owners who pay attention to load and speed markings should compare the complete sidewall code, not just the section width and rim diameter, before deciding between the two BFGoodrich options.

For 2014 Infiniti Trucks in 245/45R19, published fitment guidance supports a rim width range of 7.5 to 9.0 inches, with one entry written as 7.5 to 9 inches. That is the only size in this year and make with a stated rim-width range in the current product coverage, and it applies to the QX50’s 19-inch fitment.

Rim width matters because the same tire size can behave differently when mounted at the narrow or wide end of its approved range. If your QX50 uses 245/45R19, confirm the wheel width before final selection, especially when replacing aftermarket wheels or mixing an older wheel set with a newer tire.

The covered 2014 Infiniti Trucks products in 245/45R19 are modern radial tires with no tube-type marking in the size code. That points toward tubeless construction for that fitment rather than an inner-tube setup. Nothing in this size group suggests a tube-type application in the way older TT-marked collector tires would.

Even so, the wheel itself still matters. If a wheel has been repaired, refinished, or replaced, inspect the valve stem area and bead seats before mounting new tires, because air retention depends on wheel condition as much as the tire design on a modern luxury crossover like the QX50.

A 2014 Infiniti Trucks vehicle should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing equipment. Keep the tires clean, maintain proper inflation, and move the vehicle periodically if it sits for long stretches. Modern radial tires resist storage-related shape change better than older bias-ply designs, but long static storage can still create pressure loss and age-related sidewall deterioration.

Collectors who store a QX50, QX60, QX70, or QX80 seasonally should treat tire care as part of the full preservation plan rather than an afterthought. If the vehicle will sit for months, clean the tires, protect them from UV exposure, and consider reducing continuous load on one contact patch through occasional rolling or appropriate support methods.

Tires on a 2014 Infiniti Trucks vehicle are best judged by age, condition, and service history rather than mileage alone. A good collector-vehicle rule is to begin close evaluation around five to seven years and to give serious replacement consideration by about ten years, even if tread depth still looks usable. The DOT date code on the sidewall is the key reference for that timeline.

That age-based approach matters because many premium SUVs and crossovers accumulate low miles while still seeing heat cycles, ozone exposure, and long storage periods. A lightly used QX80 or QX50 can therefore age out its tires before wearing them out, so sidewall condition and date code deserve as much attention as tread depth.

Tires on a 2014 Infiniti Trucks vehicle should be checked before every drive and especially before any longer highway trip. Look for cracking, bulges, punctures, uneven wear, objects in the tread, and any sign that one tire is losing air faster than the others. Pressure should be checked cold, and the spare should be included in the inspection routine.

Frequent inspection is especially worthwhile on vehicles that are driven irregularly, because problems can develop while the truck is parked rather than while it is in use. A quick walkaround before taking a QX60 or QX70 on the road can catch sidewall damage, aging, or pressure loss early enough to avoid turning a minor issue into a roadside problem.

2014 Infiniti Trucks tires can be appropriate for highway driving when the tire size, load capability, condition, and speed rating all match the vehicle’s needs. In the covered 245/45R19 fitment, W-rated tires carry a 168 mph ceiling and the Y-rated option carries a 186+ mph ceiling. Those ratings are well beyond normal legal highway speeds, but age, inflation, damage, and maintenance matter more than the headline letter on a low-use vehicle.

For real-world driving, a healthy tire in the correct size is only one part of the safety picture. Suspension condition, brake health, alignment, and overall vehicle upkeep on a 2014 Infiniti truck or crossover are just as important, especially on heavier models such as the QX80 where tire condition and vehicle load work together.

Inflation pressure on 2014 Infiniti Trucks should follow the vehicle placard or owner’s manual first, because factory pressure targets are set around the specific model, wheel package, and load condition. In the covered 245/45R19 fitment, one BFGoodrich option carries a maximum load of 1,874 pounds at 50 psi, but that is a tire rating reference rather than a blanket operating pressure for every 2014 Infiniti Trucks vehicle.

The practical approach is to use the vehicle’s recommended cold inflation as your baseline and treat the tire’s maximum pressure marking as a design limit, not the default setting. Never transfer a pressure figure from a QX50’s 245/45R19 tire to another Infiniti size such as 235/65R18 or 275/50R22, because those fitments serve different vehicles and loads.

Before a longer drive in a 2014 Infiniti Trucks vehicle, inspect each tire for sidewall cracking, cuts, bulges, punctures, uneven tread wear, and proper cold inflation. Check the spare as well, and confirm that valve stems are intact and not dry or damaged. A highway trip is also a good time to verify that all four tires match the intended size for the model and wheel package.

Tire inspection should be part of a broader pre-drive review on a vehicle of this type and age. For a QX60, QX70, or QX80 especially, combine the tire check with a look at brakes, fluids, lights, and suspension condition so the trip is supported by the whole vehicle, not just fresh tread.