The 2018 Nissan Maxima sits in the modern full-size sport sedan space, blending everyday comfort with a sharper, more driver-focused personality than many traditional family sedans. Its styling and road manners make wheel and tire choice an especially visible part of the car’s overall character. Tire fitment on the 2018 Nissan Maxima is straightforward once the trim is confirmed, with 245/45R18 radial tires used on most sub-models and 245/40R19 radial tires used on the SR. Available choices center on blackwall performance-oriented radial tires from BFGoodrich and Nitto across several series. The real decision is matching the correct size to the trim, then choosing the tire that suits the car’s appearance, wheel setup, and intended use.
Which Tire Size Is Right for The 2018 Nissan Maxima
The 2018 Nissan Maxima uses two primary tire sizes, and the right one depends first on the exact sub-model and wheel diameter. Most trims use an 18-inch radial tire in 245/45R18, while the SR uses a 19-inch radial tire in 245/40R19. Before comparing brands or tire series, confirm whether the car is on its correct 18-inch or 19-inch wheel setup.
In 245/45R18, the 245 identifies the tire’s section width in millimeters, 45 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. This is the primary modern radial fitment used on most 2018 Nissan Maxima sub-models, giving it broad relevance across the lineup. Available choices include blackwall tires from BFGoodrich and Nitto in series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This size is the one to evaluate if the car has 18-inch wheels and the goal is to compare performance-oriented street tire options within the correct factory-style fitment envelope.
In 245/40R19, the 245 is the section width in millimeters, 40 is the aspect ratio, R means radial construction, and 19 identifies the wheel diameter in inches. This size serves the 2018 Nissan Maxima SR and is tied to the car’s 19-inch wheel fitment rather than the 18-inch setup used on other trims. BFGoodrich offers this size in blackwall form across series including g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A. It is the right size to consider when the Maxima is an SR or when the car is already confirmed to have the correct 19-inch wheel diameter and compatible wheel width.
Sub-model fitment matters on the 2018 Nissan Maxima because tire size splits by trim rather than staying uniform across the range. Most covered trims share the same 18-inch radial fitment, while the SR moves to a 19-inch radial setup, so confirming the exact trim is the first step.
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2018 Nissan Maxima Platinum
The 2018 Nissan Maxima Platinum uses the same 245/45R18 radial tire size found on most other Maxima trims. Tire selection here is mainly about choosing among available blackwall radial options and confirming that the car still carries the proper 18-inch wheel setup.
The 2018 Nissan Maxima S uses the 245/45R18 radial fitment. That keeps the decision centered on comparing available tire series and brand options rather than sorting through multiple primary sizes, provided the car remains on the correct 18-inch wheels.
The 2018 Nissan Maxima SL also uses the 245/45R18 radial tire size. Selection comes down to the type of street performance tire preferred, along with checking wheel diameter and width if the car has had any aftermarket wheel changes.
The 2018 Nissan Maxima SR uses a different fitment from the other trims, moving to 245/40R19 radial tires. That makes wheel confirmation especially important, since the SR’s tire choice should be evaluated around the 19-inch setup and the available blackwall performance-oriented series in that size.
The 2018 Nissan Maxima SV uses the 245/45R18 radial fitment shared by several other trims. For this sub-model, the main task is choosing the right tire series and confirming that the current wheel package still matches the intended 18-inch fitment.
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 2018 Nissan Maxima Tires for Sale
Available 2018 Nissan Maxima tire choices focus on 245/45R18 and 245/40R19 blackwall radial performance tires from BFGoodrich and Nitto. The product grid lets buyers compare series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2 across the correct wheel diameters.
These 2018 Nissan Maxima tire FAQs focus on trim-based size differences, 18-inch versus 19-inch wheel fitment, available radial tire choices, and the checks that matter before selecting tires for regular road use.
Tire Size & Fitment
What tire size fits a 2018 Nissan Maxima?
The 2018 Nissan Maxima uses two tire sizes depending on sub-model. Platinum, S, SL, and SV use 245/45R18 radial tires, while the SR uses 245/40R19 radial tires. Both are modern metric radial fitments, but they are tied to different wheel diameters and should not be treated as the same setup.
The first thing to confirm is the trim level and whether the car still has the correct 18-inch or 19-inch wheels. If the Maxima has aftermarket wheels, previous owner changes, or a non-original wheel package, verify the actual wheel diameter and width before choosing a tire.
What size rim does a 2018 Nissan Maxima use?
A 2018 Nissan Maxima uses either an 18-inch or 19-inch rim, depending on sub-model. The 245/45R18 fitment uses an 18-inch rim, and the 245/40R19 fitment uses a 19-inch rim. The rim diameter is built into the tire size itself, so matching that number is essential.
Wheel diameter should be checked before anything else because an 18-inch tire cannot be mounted on a 19-inch wheel, and the reverse is also true. Wheel width matters too, especially if the car has replacement wheels, since the available tires in these sizes call for specific rim-width ranges.
Do all 2018 Nissan Maxima sub-models use the same tire size?
No, the 2018 Nissan Maxima does not use one tire size across every sub-model. Platinum, S, SL, and SV share 245/45R18, while the SR uses 245/40R19. The split is straightforward, but it means trim identification matters before comparing tire options.
That difference affects more than just the number on the sidewall, because it also changes wheel diameter and the pool of available products. A buyer looking at an SR should stay focused on 19-inch fitment, while the other trims should be evaluated around the 18-inch setup.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Nissan Maxima?
Start with the correct tire size for the trim: 245/45R18 for Platinum, S, SL, and SV, or 245/40R19 for the SR. From there, compare the tire’s construction, wheel-diameter match, rim-width compatibility, and intended street use. On this Maxima, every primary option is a radial tire, so the decision is about selecting the right radial within the proper size.
Brand, tire series, load specification, and overall vehicle setup all deserve attention before making a final choice. It also helps to think about how the car is driven, whether it still has stock wheels, and whether the priority is all-season street use, a more performance-oriented feel, or simply replacing worn tires with the correct fitment.
What brands offer tires for the 2018 Nissan Maxima?
BFGoodrich and Nitto both offer tire options for the 2018 Nissan Maxima in the applicable sizes. BFGoodrich appears in both 245/45R18 and 245/40R19, while Nitto is available in 245/45R18. That gives buyers a useful mix of product choices without changing away from the correct radial fitment format.
The best way to use brand information here is as part of a broader comparison, not as a shortcut. Once the correct size is confirmed, compare the available series, wheel-width requirements, and any load details that matter to the car’s current setup and how it is actually driven.
What tire series are available for the 2018 Nissan Maxima?
Available tire series for the 2018 Nissan Maxima include BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2. The full set varies by size, with the 18-inch fitment offering the widest series spread and the 19-inch fitment centered on BFGoodrich choices.
Series names are useful because they help separate one tire option from another within the same size. After confirming whether the car needs 245/45R18 or 245/40R19, compare the available series alongside sidewall style, rim-width compatibility, and any load figures that match the vehicle’s intended road use.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Nissan Maxima restoration or refurbishment?
Yes, correct tire fitment still matters on a 2018 Nissan Maxima even though it is a newer vehicle than a traditional classic. Using the proper trim-based size preserves the intended wheel-to-tire relationship, keeps the look proportionate, and avoids confusion between the 18-inch setups used on most trims and the 19-inch setup used on the SR.
Appearance on a modern sedan is strongly influenced by sidewall profile and wheel diameter, so the wrong size can change the car’s visual balance quickly. Anyone trying to return the car to a stock-style presentation should confirm the original trim, wheel diameter, and current wheel package before replacing tires.
How does tire construction affect the appearance of a refurbished 2018 Nissan Maxima?
On the 2018 Nissan Maxima, construction is simple because the primary fitments are radial tires. The visual effect comes less from bias-ply versus radial differences and more from the exact size, sidewall height, and whether the car is on the 18-inch or 19-inch wheel setup tied to its trim.
A refurbished Maxima looks most coherent when the tire size matches the intended wheel package and maintains the right overall stance. Since the available products here are blackwall radials, the appearance decision is mostly about choosing the correct fitment and selecting a tire series that suits the car’s style and use.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Nissan Maxima?
Yes, modifications can affect tire fitment on a 2018 Nissan Maxima. Aftermarket wheels, suspension changes, lowering, or body alterations can all change how a 245/45R18 or 245/40R19 tire sits in the wheel opening. Even when the tire size itself is familiar, wheel width and overall clearance still need to be considered.
A Maxima that no longer has its original wheel package should be measured rather than assumed to match stock trim fitment. Check wheel diameter, wheel width, and tire-to-fender or tire-to-suspension clearance before replacing tires, especially if the car has been modified for appearance or performance.
What should I inspect before driving a 2018 Nissan Maxima on new tires?
Before driving a 2018 Nissan Maxima on new tires, inspect the wheels for the correct diameter and condition, confirm the new tires match the trim’s required size, and look over the suspension and steering components for obvious wear. Proper inflation and secure mounting also matter before the car goes back into regular road use.
It is also smart to check for uneven old-tire wear, because that can point to alignment or suspension issues that new tires will not fix on their own. A short, careful initial drive helps confirm there is no rubbing, vibration, or clearance problem once the new tires are mounted.
How often should tires on a 2018 Nissan Maxima be inspected?
Tires on a 2018 Nissan Maxima should be inspected regularly rather than only when replacement is overdue. Routine checks should include tread wear, cuts, bulges, visible cracking, and any slow air loss. On a car driven often, these inspections can be part of normal monthly maintenance and any pre-trip check.
A quick visual inspection becomes even more important if the car sits for stretches, uses low-profile tires, or has aftermarket wheels. Catching pressure loss or irregular wear early can help prevent damage and also confirms that the current 18-inch or 19-inch setup is still wearing evenly and operating as intended.
