2021 Nissan Maxima Tires

The 2021 Nissan Maxima uses two tire sizes: 245/40R19 and 245/45R18. The 40th Anniversary Edition, Platinum, and SR use 245/40R19, while the SV uses 245/45R18. Both are radial metric sizes, but they are tied to different wheel diameters, so they are not simply alternate versions of the same fitment.

The practical first step is confirming which trim you have and checking the wheel diameter currently on the car. A Maxima with replacement wheels may no longer match its original trim-based setup, so the tire choice should follow the actual 18-inch or 19-inch wheel in place, along with the car’s present clearance and wheel-width requirements.

A 2021 Nissan Maxima uses either an 18-inch or 19-inch rim, depending on the sub-model. The SV uses the 245/45R18 tire on an 18-inch rim, while the 40th Anniversary Edition, Platinum, and SR use the 245/40R19 tire on a 19-inch rim. The tire size and the rim diameter have to match exactly.

That wheel diameter should be confirmed before ordering tires, especially on a used Maxima or one that may have aftermarket wheels. Rim width matters too, since the available 18-inch and 19-inch products each carry their own approved wheel-width ranges. Matching the tire to the wheel already on the car helps avoid unnecessary clearance and mounting issues.

No, the 2021 Nissan Maxima does not use one tire size across every covered sub-model. The 40th Anniversary Edition, Platinum, and SR share 245/40R19, while the SV uses 245/45R18. Both sizes have similar overall dimensions, but they are built for different rim diameters and should be treated as separate fitments.

That difference matters because tire shopping starts with the trim and wheel package, not just the model name. If the car has ever had a wheel swap, the current wheel diameter becomes even more important than the original trim assignment. Checking the sidewall and measuring the wheel before replacement is the safest way to stay on the correct path.

Start with the correct size for the trim and wheel diameter, then compare the available radial tire series within that fitment. For the 2021 Nissan Maxima, choices vary by brand, tire line, approved rim-width range, stated load figures where available, and related product attributes. All of the listed options use a blackwall sidewall presentation.

The next step is matching the tire to how the car is driven. A Maxima used mainly for daily road use may call for a different tire line than one chosen for a sharper, more performance-focused feel. Wheel width, current suspension condition, and any non-stock wheels should be reviewed before narrowing the choice to a specific product.

The available tire brands for the 2021 Nissan Maxima are BFGoodrich and Nitto, depending on size. BFGoodrich appears in both 245/40R19 and 245/45R18 with several g-Force series options, while Nitto appears in 245/45R18 with the NT555 G2. That gives buyers a mix of brand and tire-line choices within the Maxima’s correct radial fitments.

Brand alone should not decide the purchase. It makes more sense to compare the exact tire series in the correct size, then look at rim-width compatibility, load figures where stated, and the way the tire fits your intended use. On a trim-specific fitment like the Maxima’s, staying with the right 18-inch or 19-inch size matters more than switching brands.

The 2021 Nissan Maxima is served by several tire series in its two sizes. BFGoodrich offers g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A, while the 245/45R18 fitment also includes the Nitto NT555 G2. These series give the Maxima owner multiple ways to stay within the proper radial size while comparing product character.

Series choice matters because it shapes the comparison beyond simple sizing. Once the correct trim-based fitment is confirmed, it becomes easier to look at wheel-width range, load details where shown, and whether the car is being kept close to its original wheel setup or used with an aftermarket package. That approach keeps the decision practical instead of purely brand-driven.

Yes, correct tire fitment still matters on a 2021 Nissan Maxima even though it is a modern vehicle rather than a traditional collector-era restoration candidate. The right size preserves the intended relationship between tire and wheel, and on this car that means using either 245/40R19 or 245/45R18 according to the trim and wheel package involved.

Appearance is part of that decision because wheel diameter and sidewall profile have a visible effect on how the Maxima sits. A preservation-minded owner should verify the original-style wheel setup before changing sizes. If exact as-delivered presentation is important, trim-specific reference materials and original vehicle documentation are the right places to confirm the intended wheel-and-tire combination.

A period-appropriate approach for a 2021 Nissan Maxima starts with the correct trim-based size and a modern blackwall radial presentation. The available products already follow that general look, so the main decision is whether your car needs 245/40R19 on a 19-inch wheel or 245/45R18 on an 18-inch wheel. Getting the size right does more for appearance than chasing small specification differences.

After the fitment is confirmed, compare the available BFGoodrich and Nitto series in the appropriate size and keep the wheel package consistent with the car’s intended presentation. A Maxima meant to retain its original-era look should avoid casual size substitutions, especially when wheel diameter changes are involved. The closer the tire remains to the proper trim-specific setup, the more coherent the finished appearance will be.

Yes, modifications can affect tire fitment on a 2021 Nissan Maxima even when the tire size itself looks close to stock. Aftermarket wheels, changes in wheel width, different offsets, lowered suspension, or body and brake modifications can all alter the space available for a 245/40R19 or 245/45R18 tire. That matters because the Maxima already uses two trim-specific wheel diameters.

A modified car should be checked at full steering lock and through suspension travel before settling on replacement tires. It is also smart to confirm the actual wheel dimensions rather than assuming they match the original trim. Small changes in wheel specification can affect clearance at the strut, inner fender, and outer bodywork even when the tire size remains familiar.

Before driving a 2021 Nissan Maxima on new tires, confirm the tire size matches the wheel diameter, check inflation pressure, and inspect the wheels for damage or irregular bead-seat condition. It also helps to look over the suspension and alignment-related wear points, since uneven geometry can shorten tire life quickly on a modern sedan using lower-profile radial fitments.

A short road test should include listening for rubbing, feeling for vibration, and rechecking pressure afterward. The owner should also inspect for any signs of contact at the fender liners or steering components, especially if the car has aftermarket wheels. Catching those issues early protects the new tires and helps the Maxima maintain the road manners expected from its trim-specific setup.

Tires on a 2021 Nissan Maxima should be inspected regularly, not just when tread looks low. A routine visual check for uneven wear, punctures, cuts, bulges, and pressure loss is worthwhile throughout the year, and a more thorough inspection makes sense before longer highway driving. That is especially important with the Maxima’s lower-profile radial sizes, which can be more sensitive to wheel and alignment issues.

Inspection frequency should increase if the car sees rough roads, seasonal storage, or infrequent use. Looking at the inner sidewall and shoulder areas can reveal problems that are easy to miss from the outside. Consistent pressure checks and periodic review of tread wear patterns help identify whether the tires are aging normally or whether the Maxima needs alignment, suspension, or wheel attention.