2015 Infiniti Trucks Tire Fitment Guide

2015 Infiniti Trucks vehicles use eight sizes across four model lines. The QX50 uses 225/55R18 or 245/45R19, the QX60 uses 235/65R18 or 235/55R20, the QX70 uses 265/60R18 or 265/50R20, and the QX80 uses 275/60R20 or 275/50R22. These are all radial sizes, and they mount on 18-, 19-, 20-, or 22-inch wheels depending on the model and wheel package.

That means year and make alone are not enough to choose a tire for 2015 Infiniti Trucks. A QX50 and QX80 are not interchangeable, and even within one model there may be two wheel diameters. Start by confirming the model badge, then verify the wheel diameter or the size already on the tire sidewall before narrowing down tire options.

On a 2015 Infiniti Trucks tire, 245/45R19 is a metric radial code. The 245 is the nominal section width in millimeters, 45 is the aspect ratio, the R identifies 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 fitment.

Knowing how to read that code helps you avoid crossing over to another QX50 size that uses a different wheel. It also explains why a tire that appears close in overall width may still be incorrect if the aspect ratio or rim diameter changes. Match the full code, not just the width, when replacing a 2015 Infiniti Trucks tire.

No, 2015 Infiniti Trucks models do not use the same tire size. Each model has its own pair of fitments: the QX50 uses 18- or 19-inch sizes, the QX60 uses 18- or 20-inch sizes, the QX70 uses 18- or 20-inch sizes, and the QX80 uses 20- or 22-inch sizes. There is no single size shared across the full model range.

That model-specific variation matters because moving from one QX model to another often changes both rim diameter and overall tire proportions. If you are replacing tires on a used vehicle, check the sidewall and the wheel itself rather than assuming every 2015 Infiniti Trucks SUV takes the same fitment. That extra step prevents ordering a tire that is correct for the brand but wrong for your model.

Among the currently covered 2015 Infiniti Trucks products, the available 245/45R19 choices for the QX50 are all Blackwall radials. That sidewall treatment matches the modern luxury and performance character of a 2015 Infiniti product far more naturally than vintage-style whitewall or period bias-ply themes used on much older vehicles.

For a buyer, that means sidewall appearance is straightforward on the 245/45R19 fitment: the decision is more about brand and speed rating than about changing the vehicle's visual era. If your 2015 Infiniti Trucks model uses another size, confirm the exact tire code first, then choose a sidewall style that keeps the appearance consistent with the wheel package and the vehicle's contemporary design.

For 2015 Infiniti Trucks applications covered here, the 245/45R19 size is available from BFGoodrich and Nitto. BFGoodrich appears in both the g-Force Comp-2 A/S and g-Force Phenom T/A lines, while Nitto appears with the NT555 G2. All of these are radial Blackwall tires aimed at a modern road-use audience rather than a restoration market.

Brand choice in this case is less about authenticity and more about matching your intended use and the exact specifications of the tire. Compare the speed rating and any wheel-width guidance for the 245/45R19 before deciding. If your 2015 Infiniti Trucks vehicle uses a different size, begin with that size first, since brand coverage can change from one fitment to another.

For a 2015 Infiniti Trucks QX50 in 245/45R19, both the BFGoodrich g-Force Comp-2 A/S and g-Force Phenom T/A are radial Blackwall tires on a 19-inch rim, but their ratings and specs differ. The Comp-2 A/S comes in 245/45ZR19 98W and weighs 29 pounds, while the Phenom T/A comes in 245/45ZR19 102Y, weighs 29.26 pounds, and carries a maximum load of 1,874 pounds at 50 psi. Both note a rim-width range of 7.5 to 9 inches.

The practical difference is that the Phenom T/A carries a higher stated speed ceiling and a higher stated load figure, while the Comp-2 A/S stays close in physical weight and wheel fitment range. Either way, the correct choice depends on the wheel width on your QX50 and the type of driving you expect to do, not just on brand loyalty alone.

Rim-width guidance is available for the 245/45R19 tires used on the 2015 Infiniti Trucks QX50. Both the BFGoodrich g-Force Comp-2 A/S and BFGoodrich g-Force Phenom T/A call for a wheel width range of 7.5 to 9 inches on a 19-inch rim diameter. That establishes a clear fitment window for those two 245/45R19 products.

Wheel width matters because a tire can match the sidewall size code yet still be a poor match for the wheel if the rim is too narrow or too wide. Before choosing a 245/45R19 for a 2015 Infiniti Trucks QX50, verify the actual wheel width, especially if the vehicle has aftermarket wheels or a wheel package change from a previous owner.

The covered 245/45R19 products for 2015 Infiniti Trucks are modern radial passenger tires with no tube-type marking in the size description. That points to tubeless use on the proper wheel, which is the normal setup for a 2015-era Infiniti luxury crossover rather than an older tube-type collector application.

Even so, tubeless operation still depends on the wheel being in good condition and the valve hardware sealing correctly. If your 2015 Infiniti Trucks vehicle has replacement wheels, prior repairs, or corrosion around the bead seat, inspect those areas carefully. The tire size code and tire type should always be matched to the wheel design before installation.

A 2015 Infiniti Trucks vehicle should be stored on clean, properly inflated tires in a cool, dry space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Ozone and UV exposure age rubber even when tread wear is minimal. If the vehicle sits for long periods, moving it slightly from time to time can help avoid temporary flat-spotting.

Long-term storage is easier on tires when the vehicle is kept off damp ground and when fluids, suspension, and alignment issues are also under control. If a 2015 Infiniti Trucks SUV will be parked for a season, inspect the sidewalls before and after storage and confirm pressure before the first drive. A modern radial usually recovers from mild storage flat-spotting after some driving, but aging and cracking do not reverse.

Tires on a 2015 Infiniti Trucks vehicle should be judged by age as much as by mileage. For a low-use luxury SUV, a good rule is to begin careful evaluation around five to seven years and to give serious replacement consideration as tires approach ten years from their DOT date code, even if the tread still looks serviceable.

That matters because many premium SUVs are driven infrequently, which can hide age-related issues behind low wear. A 2015 Infiniti Trucks vehicle may have enough tread to appear healthy while the rubber has already hardened or begun to crack. Read the date code, inspect the sidewalls and tread blocks, and treat calendar age as a major factor in replacement planning.

Tires on a 2015 Infiniti Trucks vehicle should be inspected before every drive and again before any extended outing. Look for sidewall cracking, punctures, cuts, unusual shoulder wear, center wear, bulges, and signs that a tire is losing pressure. On a modern radial SUV application, regular pressure checks are just as important as visual inspection.

Frequent inspection is especially important on vehicles that alternate between long parking periods and highway use. A 2015 Infiniti Trucks SUV can seem fine around town yet reveal vibration, pull, or pressure loss on a longer trip. Catching those issues early helps you decide whether the problem is tire age, alignment, wheel damage, or a slow leak before it turns into a roadside interruption.

Yes, 2015 Infiniti Trucks tires can be suitable for highway driving when the size matches the vehicle, the tire is in sound condition, and the speed rating meets the intended use. In the covered 245/45R19 fitment, available products include W-rated tires with a 168 mph ceiling and a Y-rated tire with a 186+ mph ceiling. Those ratings are well beyond ordinary U.S. highway speeds.

Real-world safety still depends on more than the speed symbol on the sidewall. Tire age, inflation pressure, suspension condition, wheel condition, alignment, and brake performance all matter on a 2015 Infiniti Trucks vehicle. For most drivers, the more important task is choosing the correct size and keeping the tires fresh and properly maintained rather than chasing the highest speed rating.

Inflation pressure for 2015 Infiniti Trucks tires should follow the vehicle placard or owner's manual first, because factory pressure recommendations are tied to the vehicle's weight balance and intended operation. One covered 245/45R19 product, the BFGoodrich g-Force Phenom T/A, states a maximum load of 1,874 pounds at 50 psi, but that figure is the tire's rated limit rather than a universal operating pressure for every 2015 Infiniti Trucks application.

Use the manufacturer's maximum pressure figure as a rating reference, not as a blanket setting. The correct day-to-day pressure for a 2015 Infiniti Trucks SUV may be lower and should match the vehicle's original specification unless the tire maker directs otherwise for a special application. Check pressures cold and keep all four tires consistent with the vehicle's recommended setup.

Before taking a 2015 Infiniti Trucks vehicle on a longer drive, inspect each tire for cracking, cuts, punctures, bulges, uneven wear, and correct cold inflation pressure. Make sure the sidewall size on the vehicle matches the intended fitment, and check the spare if the vehicle carries one. A wheel with curb damage or a tire with a vibration history deserves extra attention before any trip.

Tires are only one part of the pre-drive picture on a luxury SUV, so it also makes sense to review brakes, fluids, lights, and suspension condition. A 2015 Infiniti Trucks model may be fully capable of highway travel, but long-distance confidence comes from knowing the tires are sound and the rest of the vehicle is equally ready. A short local test drive after pressure adjustment is a smart final step.