2018 Maserati Quattroporte Tires

The 2018 Maserati Quattroporte uses staggered radial tire sizes rather than one universal fitment. Front sizes are 245/45R19, 245/40R20, and 245/35R21, while rear sizes are 275/40R19, 285/35R20, and 285/30R21, depending on the wheel package installed on the car.

That means the correct replacement depends on two checks before anything else: whether the tire being replaced is on the front or rear axle, and whether the car has 19-inch, 20-inch, or 21-inch wheels. Reading the existing tire sidewall and confirming wheel diameter prevents mixing front and rear sizes or ordering a tire for the wrong wheel package.

A 2018 Maserati Quattroporte uses 19-inch, 20-inch, or 21-inch rims, depending on the tire size and wheel package. The 245/45R19 and 275/40R19 sizes mount on 19-inch rims, the 245/40R20 and 285/35R20 sizes use 20-inch rims, and the 245/35R21 and 285/30R21 sizes use 21-inch rims.

Rim diameter is the first fitment detail to verify because a 19-inch tire will not mount on a 20-inch or 21-inch wheel, even if the overall tire diameter is close. It also helps to confirm whether the car is on the original wheel package or has been changed, since the Quattroporte’s front and rear sizes are paired around that rim diameter.

The 2018 Maserati Quattroporte has more than one tire size because it uses staggered front and rear fitments and was offered with different wheel diameters. The front axle uses a narrower 245-section tire, while the rear axle uses wider 275- or 285-section tires, and those combinations change across 19-inch, 20-inch, and 21-inch setups.

That variety means tire selection is tied to the car’s actual wheel package, not just the year and model name. A buyer replacing one tire should confirm axle position and the installed wheel size first, while a buyer replacing a full set should make sure the front and rear pair remain consistent with the same 19-inch, 20-inch, or 21-inch arrangement.

Start with the exact size, axle position, and wheel diameter already on the car, because the 2018 Maserati Quattroporte uses staggered radial fitments. After that, compare the available tire series, sidewall style, rim-width suitability where stated, and any load figures that appear for the specific size you are considering.

A front 245-size and a rear 275- or 285-size do different jobs on this car, so the selection process should stay size-specific. It also helps to decide whether the goal is a clean modern blackwall appearance or a more distinctive look such as raised white letters or redlines in sizes where those options are offered.

Sidewall choices for the 2018 Maserati Quattroporte include blackwall, RWL, and redline, depending on the tire size. Blackwall options appear across BFGoodrich and Nitto offerings, while certain 20-inch sizes also include Pro-Trac Street Pro III tires with raised white letter or redline sidewall treatments.

That makes sidewall appearance a real selection factor, especially on 245/40R20 and 285/35R20 sizes where more visual variety is available. The right choice depends on whether the car is being kept visually understated or given a more custom presentation, but the sidewall style still has to be chosen within the exact front or rear size already required.

Applicable Quattroporte tire options include BFGoodrich, Nitto, and Pro-Trac, depending on the size. Across the available 19-inch and 20-inch fitments, those brands cover several radial series including g-Force Comp 2 AS, g-Force Phenom T/A, g-Force Sport Comp 2, NT555 G2, and Street Pro III.

The practical difference is not just the brand name but how each option is presented in the correct size. Some are offered only as blackwalls, while others bring sidewall styling such as RWL or redline, so the best comparison starts after the correct tire size and wheel diameter have already been confirmed for the front or rear position.

A period-style approach on a 2018 Maserati Quattroporte starts with keeping the correct staggered size and wheel-diameter combination already used on the car. Since this is a modern radial-fitment vehicle, the appearance decision is more about sidewall treatment and tire series than about choosing between vintage-style constructions.

For a more understated luxury-sedan look, blackwall options are the natural place to start. If the goal is a more distinctive visual statement, certain 20-inch sizes offer RWL and redline choices, but those should be viewed as appearance-driven alternatives rather than assumptions about original delivery style for every Quattroporte.

Correct tire fitment matters on a 2018 Maserati Quattroporte because the car uses axle-specific staggered sizes tied to 19-inch, 20-inch, or 21-inch wheel packages. Keeping the right front and rear relationship helps preserve the car’s intended stance and avoids the visual and mechanical mismatch that can come from mixing wheel-package sizes.

For a preservation-minded car, tire choice should support both proper proportions and the character of the vehicle. That means verifying the wheel setup currently on the car, then choosing a tire in the matching size with an appearance that suits the project, rather than treating similar overall diameters as interchangeable across different wheel diameters.

Yes. Modifications can affect tire fitment on a 2018 Maserati Quattroporte, especially because the car already uses staggered front and rear sizes across three wheel diameters. Aftermarket wheels, altered offsets, suspension changes, or body modifications can change the clearance relationship even when the tire size itself looks close to the original setup.

Any Quattroporte with non-original wheels or ride height should be checked for steering clearance, inner-fender space, and rear clearance before replacement tires are selected. Matching the sidewall size code alone is not enough when the wheel specification has changed, so measuring the actual setup on the car is the safest path.

Before driving a 2018 Maserati Quattroporte on new tires, inspect that each tire is mounted in the correct front or rear position, that pressures are set appropriately for the application, and that the wheel and tire assemblies show no obvious damage. It is also wise to confirm even seating at the bead and no signs of rubbing at full steering lock.

A short initial road check helps catch vibration, pull, or clearance issues before longer use. After the first miles, recheck pressure and look again for any contact marks inside the wheelhouse, especially on cars with 20-inch or 21-inch packages where the lower-profile sidewall leaves less room for setup errors.

Tires on a low-use 2018 Maserati Quattroporte should be inspected regularly for pressure loss, uneven wear, cuts, bulges, and age-related cracking, even if tread depth still looks strong. Modern performance radials can age out from time and storage conditions long before they appear worn in the way a frequently driven car’s tires would.

Good storage habits matter on a car that sits. Keeping the Quattroporte away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the rubber, and moving the car periodically can help avoid long-term flat spotting. Any tire showing visible deterioration deserves attention before normal road use or highway driving.