2016 Infiniti Tire Fitment Guide

2016 Infiniti vehicles use five tire sizes across three model lines: 225/55R17, 245/40R19, and 265/35R19 for the Q50; 245/50R18 and 245/40R20 for the Q70; and the same 245/50R18 and 245/40R20 sizes for the Q70L. Rim diameter is built into each size code, so these fitments span 17-, 18-, 19-, and 20-inch wheels rather than one interchangeable wheel size across the full lineup. Rim width coverage where available runs from 6.0 to 9.0 inches for 225/55R17, 8.0 to 9.5 inches for 245/40R19 and 245/40R20, and 9.0 to 10.5 inches for 265/35R19.

The practical takeaway is that 2016 Infiniti fitment starts with model identification and wheel diameter, not just year and make. A Q50 owner must also know whether the car has 17-inch or 19-inch wheels, while Q70 and Q70L owners need to confirm whether their cars wear 18-inch or 20-inch wheels. Once that is settled, you can compare sidewall styling, brand preference, and load or speed-rating differences within the correct size family.

On a 2016 Infiniti, 225/55R17 is a modern metric radial size. The 225 is the nominal section width in millimeters, 55 is the aspect ratio, the R identifies radial construction, and 17 is the wheel diameter in inches. On this year and make, that size belongs to the Q50 and fits 17-inch wheels, with radial options in both Blackwall and Wide Whitewall styles from BFGoodrich.

That code matters because every part of it affects fitment. A 225/55R17 cannot be substituted with a 19-inch or 20-inch Infiniti size unless the wheel itself changes, and the 17-inch Q50 setup sits in a different visual and dimensional range than the 19-inch fitments. If your Q50 currently wears 17-inch wheels, confirming the full sidewall code on the tire and wheel before replacement is the safest way to stay in the proper fitment family.

No. 2016 Infiniti models do not share one universal tire size across the lineup. The Q50 uses 225/55R17, 245/40R19, and 265/35R19, while the Q70 and Q70L share 245/50R18 and 245/40R20. Even within a single model, wheel-package differences can change the tire size, especially on the Q50 and the larger Q70-family sedans.

That means year and make are only the starting point. Before choosing a tire, confirm whether you have a Q50, Q70, or Q70L, then verify the wheel diameter actually mounted on the car. Buyers comparing multiple used or modified cars should be especially careful here, because a wheel swap can put a different size family on the car than what was delivered from the factory.

2016 Infiniti tire options include several sidewall appearances depending on size. 225/55R17 is available in Blackwall and Wide Whitewall form, 245/40R19 and 265/35R19 stay in Blackwall, 245/40R20 comes in Blackwall and RWL, and 245/50R18 comes in RWL and Redline. Those choices give this year and make a mix of contemporary sport styling and more customized visual treatments, even though all five sizes are modern radial constructions.

For most 2016 Infiniti owners seeking an OE-like late-model look, blackwall is the most natural visual fit. RWL, Redline, and especially Wide Whitewall move the appearance toward custom or restyled territory rather than factory-authentic late-2010s presentation. If appearance matters as much as fitment, choose the correct size first and then narrow the sidewall style to match how original or how personalized you want the car to look.

Three brands cover 2016 Infiniti applications here: BFGoodrich, Nitto, and Pro-Trac. BFGoodrich appears across 225/55R17, 245/40R19, 265/35R19, and 245/40R20; Nitto appears in 265/35R19 and 245/40R20; and Pro-Trac covers 245/40R20 and 245/50R18. All of them are radial offerings, but the styling and speed-rating mix changes by size.

Brand choice becomes more important after you have confirmed the exact fitment. A Q50 owner with 17-inch wheels has a different brand mix than a Q70 owner on 18-inch wheels, and a 20-inch Q70 or Q70L opens another set of options entirely. If you are comparing tires for appearance as well as function, sidewall treatment may narrow the field just as much as the brand name.

On 2016 Infiniti fitments where both appear, the BFGoodrich g-Force Sport COMP-2 and g-Force Phenom T/A share the same basic radial performance orientation but differ in some available specifications. In 245/40R19, the Sport COMP-2 appears as a 98W tire while the Phenom T/A appears as a 98Y tire, and in 245/40R20 the Sport COMP-2 appears as a 99W tire while the Phenom T/A appears as a 99Y tire. The Phenom T/A also carries published load figures of 1653 pounds at 50 psi in 245/40R19 and 1709 pounds at 50 psi in 245/40R20.

For a buyer, that means these are not interchangeable simply because the size is the same. If your priority is keeping the same size while comparing speed rating and stated load information, the sidewall markings matter. Check the complete size string on the product you are considering, especially on 19- and 20-inch Q50, Q70, and Q70L applications where more than one BFGoodrich series covers the same fitment.

Rim width ranges vary by size on 2016 Infiniti applications. 225/55R17 fits rims from 6.0 to 8.0 inches on several products, with one BFGoodrich Silvertown Radial extending to 6.00 to 9.00 inches. 245/40R19 and 245/40R20 both use 8.0 to 9.5 inch rim widths, while 265/35R19 uses 9.0 to 10.5 inch rims. The 245/50R18 entries do not carry a rim width range here.

That spread is important because a tire can have the correct diameter and still be wrong for the wheel if the rim is too narrow or too wide. This comes up most often when a Q50 has aftermarket 19-inch wheels or when a Q70 or Q70L has been changed from 18s to 20s. Confirm the wheel width stamped on the wheel itself before settling on a replacement tire.

The 2016 Infiniti tire options here are modern radial sizes and none carry tube-type markings such as TT. The size markings shown are typical tubeless-style radial markings, including ZR performance markings on several 17-, 18-, 19-, and 20-inch applications. That means these fitments follow the normal late-model passenger-car approach rather than a vintage tube-type setup.

Even so, wheel condition still matters. If a car has factory wheels in good condition, tubeless radial service is the expected baseline, but bent wheels, bead-seat corrosion, or custom wheels can create sealing issues that mimic a tire problem. If you are replacing tires on a modified Q50, Q70, or Q70L, inspect the wheel and valve stem at the same time rather than treating the tire alone as the whole solution.

Original 2016 Infiniti wheels cannot be treated as universal across all five tire sizes because the lineup uses four different rim diameters. Q50 fitments span 17- and 19-inch wheels, while Q70 and Q70L fitments use 18- and 20-inch wheels. A tire must match the wheel diameter exactly, so a 17-inch tire cannot mount on a 19-inch wheel, and an 18-inch Q70 tire cannot mount on a 20-inch Q70 wheel.

Within a given diameter, wheel width still needs to be checked before changing to another tire in the same size family. That matters most on 19-inch Q50 applications and 20-inch Q70 or Q70L applications, where performance tires may cover a narrower width band than a casual buyer expects. Treat the factory wheel diameter as your first gate, then confirm the wheel width before final selection.

A stored 2016 Infiniti should be kept away from direct sunlight, standing moisture, and ozone sources such as electric motors, battery chargers, welders, and running compressors. Clean, dry concrete or a barrier under the tires is preferable to damp ground, and the car should be moved periodically or supported in a way that reduces long static loading. Because every size here is radial, long-term storage concerns center more on age, pressure loss, and environmental cracking than on severe bias-ply flat-spotting.

Luxury sedans and sport sedans often sit for stretches between drives, so tire care becomes part of preserving the whole car. Check inflation before the car goes into storage and again before it comes out, since underinflation during storage can stress the casing and encourage flat spotting. If the car will sit for months, occasional rolling or repositioning helps keep one section of the tread from carrying the load indefinitely.

On a 2016 Infiniti, tire age is usually a more important guide than mileage alone, especially on collector-kept, weekend-driven, or low-mileage cars. A sensible rule is to begin evaluating tires closely around five to seven years of age and to consider replacement as they approach ten years, regardless of remaining tread. The DOT date code on the sidewall is the key reference point for the tire’s actual age.

That matters because a sporty Q50 or a larger Q70 can look road-ready while the tires have already aged out chemically. Sidewall cracking, hardening rubber, vibration, and reduced wet-weather behavior can appear even when the tread still looks respectable. If you have recently acquired a used 2016 Infiniti, checking the tire date code is one of the first maintenance steps worth taking before routine driving or highway use.

Tires on a 2016 Infiniti should be inspected before every drive and especially before any extended highway outing. Look for sidewall cracking, punctures, bulges, uneven wear, and any sign that a tire is losing pressure between uses. On 19- and 20-inch performance fitments, also pay attention to inner-edge wear and impact damage from potholes, since lower-profile tires can mask wheel issues until vibration or air loss appears.

A quick walk-around catches many problems before they become expensive or unsafe. If the car has been sitting, include a pressure check rather than relying on appearance, because a radial can be substantially low without looking obviously flat from a distance. Owners who rotate between seasonal use and storage should inspect the spare as well, since an aging spare can be just as compromised as the tires on the ground.

The 2016 Infiniti tire options here are all radial constructions intended for modern road use, and several carry W or Y speed ratings. W corresponds to a 112 mph ceiling, while Y corresponds to 186+ mph. That means the tires themselves are built for highway service when they are correctly sized, properly inflated, and in sound condition. On a late-model Infiniti sedan, real-world safety usually depends at least as much on tire age, alignment, brake condition, and suspension health as on the letter molded into the sidewall.

For everyday use, highway confidence starts with choosing the exact size for the car and confirming the tire is not aged out or damaged. If you are replacing only two tires on a Q50, Q70, or Q70L, pay close attention to matching overall size and service category across the axle. A fresh, properly fitted radial in the right size is far more important than chasing a high speed rating that the car will never approach in normal use.

Inflation pressure for a 2016 Infiniti should follow the vehicle placard or owner’s manual first, because factory pressure recommendations are vehicle-specific and can differ between a Q50, Q70, and Q70L even when the size family appears close. Tire products in these fitments also carry their own maximum load and pressure figures. Examples include 1609 pounds at 51 psi and 1819 pounds at 50 psi for 225/55R17, 1653 pounds at 50 psi for 245/40R19 and 265/35R19, and 1709 pounds at 50 psi for 245/40R20.

Those figures are not a blanket inflation recommendation for daily use; they are load-at-pressure ratings tied to a specific tire. Do not transfer a pressure number from one size to another or from a 20-inch Q70 setup to a 17-inch Q50. Use the car’s placard for baseline inflation, then confirm the tire’s own sidewall information so the vehicle recommendation and the tire’s service limits stay in harmony.

Before a longer drive in a 2016 Infiniti, inspect all four tires for cracking, cuts, bulges, punctures, and uneven tread wear, then verify cold inflation pressures. Confirm that the tires match the wheel diameter on the car, especially if the vehicle has aftermarket wheels or a recent wheel swap. On lower-profile 19- and 20-inch fitments, it is also wise to check for bent wheels or sidewall bruising from prior impacts.

Tires are only one part of the preparation, but they are the part that touches the road. A quick pre-trip routine should also include checking the spare, valve stems, alignment feel, and any vibration that may have developed during local driving. On a used or recently purchased 2016 Infiniti, this kind of inspection is a smart way to separate a cosmetic tire issue from a wheel, suspension, or maintenance problem before the miles add up.