The 2023 Infiniti Q50 carries one of the last traditional sport-sedan layouts in a market that has shifted heavily toward crossovers, giving it a distinct appeal for drivers who still want rear-drive character, athletic proportions, and a sharper connection to the road. Tire selection matters because this exact model uses multiple radial sizes depending on trim and drivetrain, including 18-inch and 19-inch fitments. That makes the first step identifying whether the car is a Luxe, Sensory, or Red Sport 400 configuration, especially on the staggered Red Sport 400 RWD setup. From there, the real choice becomes matching the correct size while comparing available blackwall performance-oriented tire series for appearance, wheel compatibility, and intended road use.
Which Tire Size Is Right for The 2023 Infiniti Q50
The 2023 Infiniti Q50 uses three primary tire sizes, and the right one depends on the exact sub-model and wheel setup. Both 18-inch and 19-inch rims are used, so confirming wheel diameter comes first, followed by trim identification. The Red Sport 400 RWD also uses a staggered arrangement, which means front and rear tire sizes are not the same.
In 225/50R18, the 225 identifies the tire's nominal section width in millimeters, the 50 is the aspect ratio, the R denotes radial construction, and the 18 is the wheel diameter in inches. On the 2023 Infiniti Q50, this size is part of the 18-inch fitment used on the Luxe and suits buyers who need to stay with that wheel diameter. Available choices center on BFGoodrich performance-oriented radial lines in blackwall form, including g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A. This size should be selected only after confirming the car is equipped with the 18-inch wheel package.
Fit(s): Red Sport 400 (AWD), Red Sport 400 (RWD) Front, and Sensory
Construction: Radial|Rim: 19 in
In 245/40R19, the 245 is the nominal section width in millimeters, the 40 is the profile ratio, the R confirms radial construction, and the 19 is the rim diameter in inches. This size is used on 19-inch Q50 fitments, including the Sensory and the front position on the Red Sport 400 RWD, and it is also used on the Red Sport 400 AWD. Buyers comparing this size will find blackwall radial options from BFGoodrich across several g-Force series. It is the right starting point for a 19-inch front or all-around fitment only when the exact sub-model and wheel arrangement match.
In 265/35R19, the 265 indicates nominal section width in millimeters, the 35 is the aspect ratio, the R marks radial construction, and the 19 calls for a 19-inch rim. On the 2023 Infiniti Q50, this size serves a specific role as the rear tire on the staggered Red Sport 400 RWD setup rather than a universal fitment across the model line. Available blackwall choices include BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Phenom T/A, and the Nitto NT555 G2. This is the size to evaluate when replacing the rear tires on a staggered car and preserving the intended front-to-rear setup.
Tire fitment on the 2023 Infiniti Q50 changes by sub-model, and in one case it also changes by axle position. Checking the exact trim and whether the car uses a square or staggered setup is the key step before selecting a tire.
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2023 Infiniti Q50 Luxe
The 2023 Infiniti Q50 Luxe uses the 18-inch radial fitment rather than the 19-inch setup found elsewhere in the range. That makes wheel-diameter confirmation especially important before comparing BFGoodrich blackwall tire series in this size.
The 2023 Infiniti Q50 Red Sport 400 (AWD) uses the 245/40R19 radial size as its 19-inch fitment. Tire selection here is more straightforward than on the staggered rear-drive version, but the correct 19-inch size still needs to be matched to the existing wheel setup.
The 2023 Infiniti Q50 Red Sport 400 (RWD) Front uses 245/40R19, making it the front half of a staggered tire arrangement. Front replacement should be handled with the rear size in mind so the car keeps the intended axle-specific fitment.
The 2023 Infiniti Q50 Red Sport 400 (RWD) Rear uses 265/35R19, a wider 19-inch radial than the front axle. Rear tire selection should focus on preserving the staggered layout and confirming wheel width and clearance if the car has been modified.
The 2023 Infiniti Q50 Sensory uses the 245/40R19 radial size on a 19-inch wheel. Buyers in this trim can concentrate on comparing available blackwall performance tire series in that size rather than sorting through multiple primary fitments.
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 2023 Infiniti Q50 Tires for Sale
Available 2023 Infiniti Q50 tire choices focus on modern blackwall radial performance tires from BFGoodrich, with Nitto also appearing in 265/35R19. Across the three fitments, buyers can compare g-Force and Phenom series options by size, wheel compatibility, load specification where stated, and intended use.
Common 2023 Infiniti Q50 tire questions usually come down to the correct size for the trim, 18-inch versus 19-inch wheels, the staggered Red Sport 400 RWD setup, and how to compare the available radial tire lines.
Tire Size & Fitment
What tire size fits a 2023 Infiniti Q50?
The 2023 Infiniti Q50 uses three primary tire sizes: 225/50R18, 245/40R19, and 265/35R19. The exact fitment depends on the sub-model and wheel setup. Luxe models use 225/50R18, Sensory uses 245/40R19, Red Sport 400 AWD uses 245/40R19, and Red Sport 400 RWD uses a staggered combination with 245/40R19 in front and 265/35R19 in the rear.
Selecting the right tire starts with confirming whether the car has 18-inch or 19-inch wheels and whether the setup is square or staggered. A Red Sport 400 RWD needs front and rear positions checked separately, while Luxe and Sensory owners can match a single size more directly. If the car has aftermarket wheels, verify diameter, width, and clearance before ordering replacement tires.
What size rim does a 2023 Infiniti Q50 use?
The 2023 Infiniti Q50 uses either an 18-inch or 19-inch rim, depending on the sub-model. The 225/50R18 fitment uses an 18-inch wheel, while both 245/40R19 and 265/35R19 use 19-inch wheels. That means the Q50 does not share one universal wheel diameter across the entire model line.
Wheel diameter is the first fitment detail to confirm because the tire size must match it exactly. A tire built for an 18-inch rim cannot be used on a 19-inch wheel, and the staggered Red Sport 400 RWD setup adds another layer by using two different tire widths on 19-inch rims. Checking the wheel itself is especially useful when the car's trim or wheel package is uncertain.
Why does the 2023 Infiniti Q50 have more than one tire size?
The 2023 Infiniti Q50 has more than one tire size because fitment changes by trim and, on one version, by axle position. Luxe uses 225/50R18, Sensory uses 245/40R19, Red Sport 400 AWD uses 245/40R19, and Red Sport 400 RWD uses 245/40R19 front with 265/35R19 rear. The model line combines different wheel packages and a staggered performance setup.
That variation means tire replacement is not just a matter of matching the year and model name. Buyers should confirm the sub-model first, then check whether the car still carries its original wheel arrangement. On a staggered car, rotating choices and replacement planning differ from a square setup, so front and rear tire positions should always be verified before making a selection.
Choosing the Right Tire
What should I consider when choosing a 2023 Infiniti Q50 tire?
Start with the exact tire size required for the sub-model, then confirm the wheel diameter and whether the car uses a square or staggered setup. The 2023 Infiniti Q50 uses only radial tires in these fitments, so the next step is comparing product details within the correct size. That includes tire series, wheel-width compatibility where stated, load specification where stated, and overall intended use.
A Luxe owner shopping 225/50R18 has a different decision from a Red Sport 400 RWD owner replacing 265/35R19 rear tires. Blackwall appearance is consistent across the available products, so much of the comparison comes down to matching the tire line to the way the car is driven. It also helps to replace tires in axle pairs when wear or handling balance makes that the smarter choice.
What brands offer tires for the 2023 Infiniti Q50?
BFGoodrich appears across all three 2023 Infiniti Q50 fitments, while Nitto appears in 265/35R19. Within BFGoodrich, the available tire lines include g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A. That gives buyers a consistent brand presence across the Q50 range, with an additional brand choice on the rear size used by the Red Sport 400 RWD.
Brand comparison matters most after the correct size is locked in. A buyer with 225/50R18 or 245/40R19 will mainly be comparing BFGoodrich series, while a buyer replacing 265/35R19 rear tires can also consider the Nitto NT555 G2. Instead of chasing brand alone, compare the tire series, sidewall presentation, wheel fitment range where given, and the role that tire serves on the car.
What tire series are available for the 2023 Infiniti Q50?
The 2023 Infiniti Q50 is served by several modern radial tire series, including BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2 in 265/35R19. Not every series appears in every size, so the exact comparison set depends on whether the car uses 225/50R18, 245/40R19, or 265/35R19.
Series choice becomes more useful once the fitment question is settled. A Luxe owner on 18-inch wheels can compare the BFGoodrich options available in 225/50R18, while a Sensory or Red Sport owner on 19-inch wheels will focus on the offerings in the proper 19-inch size. Matching the series to the car's actual use matters more than assuming one line belongs on every Q50 configuration.
Restoration & Appearance
Does correct tire fitment matter for a 2023 Infiniti Q50 restoration or preservation build?
Yes, correct tire fitment still matters on a 2023 Infiniti Q50, especially if the goal is to preserve the car's intended stance and wheel-to-tire relationship. This model uses different sizes by trim, and the Red Sport 400 RWD uses a staggered front and rear arrangement. Matching the proper fitment helps the car retain the look and setup associated with its original configuration.
Appearance on a modern sport sedan is tied closely to wheel diameter, sidewall height, and front-to-rear proportion. Swapping to the wrong size can change that visual balance even before any driving differences are noticed. Owners who care about preserving the vehicle's factory-style presentation should confirm the trim, wheel package, and axle position, then choose a tire that stays within the correct original size family.
How does tire construction affect the appearance of a preserved 2023 Infiniti Q50?
On the 2023 Infiniti Q50, construction does not create a bias-ply-versus-radial appearance question because the primary fitments are all radial. The visible appearance difference comes more from staying with the correct size, profile, and wheel diameter than from choosing between tire constructions. In this case, the tire's proportions play the biggest role in how the car sits and looks.
A preserved Q50 tends to look most cohesive when the trim's original size pattern is maintained, particularly on 19-inch cars and especially on the staggered Red Sport 400 RWD setup. Sidewall styling is straightforward because the available products are blackwall designs, so the main appearance decision is whether the tire keeps the car's intended front-to-rear balance. Size accuracy matters more than cosmetic variation here.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2023 Infiniti Q50?
Yes, modifications can affect tire fitment on a 2023 Infiniti Q50 even when the tire size matches a standard trim. Aftermarket wheels, suspension lowering, spacer changes, or altered alignment settings can change the room available around the tire. That becomes especially important on 19-inch cars and on the staggered Red Sport 400 RWD, where front and rear fitments serve different roles.
A modified Q50 should be checked for wheel diameter, wheel width, and clearance at steering lock and through suspension travel. Even a correct-size tire can create issues if the wheel setup has changed from stock. Owners replacing only one axle should also make sure the remaining tires still complement the car's overall setup, rather than assuming the catalog size alone tells the whole story.
What should I inspect before driving a 2023 Infiniti Q50 on new tires?
Before driving a 2023 Infiniti Q50 on new tires, inspect wheel condition, confirm the tire size on each axle, and make sure the tires are mounted in the correct positions on any staggered setup. Tire pressure should be set correctly, and the wheels should be checked for damage, bent lips, or bead-seat problems that could affect sealing and balance.
It also helps to look over alignment-related wear items such as suspension bushings and steering components, especially if the previous tires showed uneven wear. A Red Sport 400 RWD deserves extra attention so the 245/40R19 front and 265/35R19 rear tires are not accidentally mixed. A short road test should confirm there is no rubbing, vibration, or unusual pull before returning the car to normal use.
How often should tires on a 2023 Infiniti Q50 be inspected?
Tires on a 2023 Infiniti Q50 should be inspected regularly, not just when tread appears low. A quick visual check for cuts, punctures, sidewall damage, and uneven wear is smart whenever the car is washed or fueled, and a more thorough inspection should happen any time ride quality, steering feel, or tire pressure behavior starts to change.
Modern performance-oriented sizes can hide alignment or inflation problems until wear becomes more advanced, so routine checks help catch issues early. On a staggered Red Sport 400 RWD, inspection is even more important because front and rear tires do different jobs and are not the same size. Keeping an eye on pressure consistency, tread condition, and any new vibration can prevent small problems from becoming expensive ones.
