The 2016 Infiniti Q70L blends modern luxury-sedan design with the added rear-seat room that sets the long-wheelbase version apart from the standard Q70. For owners, tire selection is less about vintage-style construction and more about confirming the exact wheel setup already on the car, because the Q70L uses two radial fitments: 245/50R18 and 245/40R20. Both 2016 Infiniti Q70L sub-models use those same sizes, so the key decision is matching the tire to the installed rim diameter and the look you want. Available choices also introduce sidewall differences such as blackwall, redline, and raised white letter treatments.
Which Tire Size Is Right for The 2016 Infiniti Q70L
The 2016 Infiniti Q70L uses two primary tire sizes, and both are radial fitments. Since both the 3.7 and 5.6 use the same pair of sizes, the first step is confirming whether the car is on 18-inch or 20-inch wheels. Once wheel diameter is verified, the decision shifts to comparing available brands, sidewall styles, and tire series within the correct size.
A 245/50R18 tire uses the same 245-millimeter nominal width as the 20-inch option, but with a taller 50-series profile on an 18-inch rim. For the 2016 Infiniti Q70L, it is a radial fitment tied to the 18-inch wheel configuration rather than an alternate construction style. Current product choices center on Pro-Trac Street Pro III with raised white letter and redline sidewall treatments, giving the owner an appearance decision within the correct size. This is the size to compare when the car retains or has been changed to 18-inch wheels.
Tire fitment is straightforward across the covered Q70L range because both sub-models share the same two radial tire sizes. What matters most is identifying whether the car is equipped with 18-inch or 20-inch wheels before choosing among the available tire options.
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2016 Infiniti Q70L 3.7
The 2016 Infiniti Q70L 3.7 uses the same pair of radial tire sizes found across the Q70L lineup, so selection depends on the wheel diameter installed on the car. Once that is confirmed, the focus turns to comparing sidewall style and tire-series options within the correct size.
The 2016 Infiniti Q70L 5.6 follows the same fitment pattern, with both primary radial sizes applying depending on wheel setup. That makes wheel confirmation the first step, followed by a closer look at brand, sidewall presentation, and product details in the appropriate 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 2016 Infiniti Q70L Tires for Sale
Available 2016 Infiniti Q70L tires span 245/40R20 and 245/50R18 radial fitments, with brands including BFGoodrich, Nitto, and Pro-Trac. Buyers can compare tire series and sidewall presentation, including blackwall, redline, and raised white letter options, once the correct wheel diameter is confirmed.
Owners shopping tires for a 2016 Infiniti Q70L usually need to confirm the correct size for the wheel on the car, then compare radial options by brand, sidewall style, and intended use. The questions below focus on fitment, selection, and practical road-use checks.
Tire Size & Fitment
What tire size fits a 2016 Infiniti Q70L?
The 2016 Infiniti Q70L uses two primary tire sizes: 245/50R18 and 245/40R20. Both are radial sizes, and both apply across the Q70L range rather than being limited to only one engine choice.
The important distinction is wheel diameter. A car on 18-inch wheels needs 245/50R18, while a car on 20-inch wheels needs 245/40R20. Since both sizes appear on the same model range, checking the actual wheels on the vehicle is more important than relying on trim name alone, especially if the car has ever had wheel changes.
What size rim does a 2016 Infiniti Q70L use?
A 2016 Infiniti Q70L uses either an 18-inch or 20-inch rim, depending on which tire size is on the car. The 245/50R18 size belongs to an 18-inch rim, while the 245/40R20 size belongs to a 20-inch rim.
That makes rim confirmation the first fitment check before comparing tires. Looking only at the model name is not enough, because both Q70L sub-models can use either size. Verifying the wheel diameter on the vehicle helps prevent choosing the wrong tire and also keeps sidewall profile and overall fitment in the proper range for the installed setup.
Do all 2016 Infiniti Q70L sub-models use the same tire size?
Both covered 2016 Infiniti Q70L sub-models, the 3.7 and the 5.6, use the same two tire sizes: 245/50R18 and 245/40R20. In other words, fitment does not split by sub-model here as much as it does by wheel diameter.
That simplifies shopping, but it does not remove the need to inspect the car itself. The right tire still depends on whether the vehicle is wearing 18-inch or 20-inch wheels. Checking the size molded into the existing tire sidewall and confirming wheel diameter before purchase is the most practical way to avoid ordering a tire for the wrong setup.
Choosing the Right Tire
What should I consider when choosing a tire for a 2016 Infiniti Q70L?
Start with the correct size for the wheels on the car: 245/50R18 for 18-inch rims or 245/40R20 for 20-inch rims. From there, compare the available radial choices by brand, tire series, sidewall style, and any rim-width or load details that apply to the specific product.
A practical choice depends on how the car is used and how you want it to look. Some owners will prefer a plain blackwall presentation, while others may want redline or raised white letter styling. It also helps to confirm the vehicle has not been altered with different wheels or suspension changes that could affect clearance or the way a given tire setup sits on the car.
What sidewall styles are available for 2016 Infiniti Q70L tires?
Sidewall choices for the 2016 Infiniti Q70L include blackwall, redline, and RWL, which means raised white letter. The exact mix depends on tire size, with blackwall options appearing in 245/40R20 and redline and RWL treatments available in both 245/40R20 and 245/50R18.
That means sidewall style is one of the clearest appearance decisions once size is settled. Blackwall keeps the look understated and modern, while redline and raised white letter create a more customized visual effect. Since sidewall treatment varies by product, it is worth narrowing the correct tire size first and then comparing appearance choices within that size rather than across both wheel diameters.
What brands offer tires for the 2016 Infiniti Q70L?
Tires for the 2016 Infiniti Q70L are available from BFGoodrich, Nitto, and Pro-Trac. The 245/40R20 size has the broadest spread of brands, while 245/50R18 is represented here by Pro-Trac options in the Street Pro III series.
Brand is only one part of the decision. It should be weighed alongside tire series, sidewall styling, and whether the product matches the wheel diameter on the vehicle. Looking at the full package helps more than choosing by brand name alone, especially when one size offers multiple series and another offers a narrower but still style-focused set of options.
Restoration & Appearance
Which tire should I choose for a period-style 2016 Infiniti Q70L?
A period-style approach for a 2016 Infiniti Q70L still begins with the correct modern radial size for the installed wheels, either 245/50R18 or 245/40R20. After that, appearance choices such as blackwall, redline, or raised white letter sidewalls shape the visual character more than construction type, since the fitments here are radial.
For a clean, luxury-sedan presentation, many owners lean toward a more understated sidewall treatment, while others prefer a more personalized look. The key is matching the tire to the car’s actual wheel diameter and overall presentation. When originality matters at a detailed level, factory brochures, window stickers, or marque-specific references are the right places to confirm how a particular car was equipped.
Does correct tire fitment matter for a 2016 Infiniti Q70L restoration or preservation project?
Correct tire fitment matters because the 2016 Infiniti Q70L was offered with two different wheel-diameter setups, and each uses a different radial tire size. Choosing between 245/50R18 and 245/40R20 affects the car’s stance, proportions, and the way the wheel and tire package fills the opening.
Preservation-minded owners should resist choosing by appearance alone and confirm what wheel package is actually on the car. A tire that visually appeals may still be wrong for the installed rim diameter. Once fitment is correct, sidewall details such as blackwall, redline, or raised white letter can be used to fine-tune the look without stepping outside the proper size family.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2016 Infiniti Q70L?
Yes, modifications can affect tire fitment on a 2016 Infiniti Q70L. Wheel changes, altered rim widths, suspension lowering, or other chassis modifications can change the space available for a 245/50R18 or 245/40R20 tire even when the size itself is correct for the model range.
That is why the vehicle should be checked as it sits today rather than assumed to match stock dimensions. Verifying wheel diameter is the first step, but wheel width, offset, and clearance at the fender and steering components matter too. Any car with aftermarket wheels or suspension work deserves a careful measurement before new tires are selected.
What should I inspect before driving a 2016 Infiniti Q70L on new tires?
Before driving a 2016 Infiniti Q70L on new tires, inspect the wheels for damage, confirm the tire size matches the rim diameter, and make sure each tire is seated and inflated properly. A quick look at valve stems, tread condition, and sidewalls is also worthwhile even when the tires are freshly installed.
Road use also calls for a broader walkaround of the car. Check for rubbing at full steering lock, make sure the suspension is in sound condition, and verify there is no unusual air loss after installation. A short local drive followed by another inspection can catch clearance or pressure issues early before the car is put into regular service.
How often should tires on a 2016 Infiniti Q70L be inspected?
Tires on a 2016 Infiniti Q70L should be inspected regularly, not just when tread looks worn. Even on a modern luxury sedan, periods of limited use can allow pressure loss, sidewall cracking, or flat spotting to develop without obvious warning from casual visual checks.
A good routine is to check air pressure and overall condition before longer drives and to give the tires a closer inspection at regular intervals throughout the year. Watch for cuts, bulges, uneven wear, and changes in how the car tracks or rides. Cars that sit for extended periods benefit from even more attention because age and storage conditions affect tire condition as much as mileage.
