2015 Maserati Tire Fitment Guide

2015 Maserati vehicles use nine sizes across three models: 235/50R18, 275/45R18, 245/45R19, 275/40R19, 245/40R20, 285/35R20, 245/35R20, 245/35R21, and 285/30R21. Ghibli uses eight of those sizes, Quattroporte uses six, and GranTurismo uses a dedicated 245/35R20 front with a shared 285/35R20 rear. Rim diameters span 18, 19, 20, and 21 inches, so wheel diameter matters just as much as section width and aspect ratio.

That means year and make alone are not enough for a correct match on a 2015 Maserati. Start by identifying the exact model, then confirm whether the car has an 18-, 19-, 20-, or 21-inch wheel package and whether it uses a staggered front-and-rear setup. Once those basics are confirmed, you can narrow the choice to the right size rather than trying to compare every Maserati fitment from that model year at once.

On a 2015 Maserati, 245/35R20 is a metric radial size. The 245 is the nominal section width in millimeters, 35 is the aspect ratio, R means radial construction, and 20 is the wheel diameter in inches. Within the 2015 Maserati range, that size belongs to the GranTurismo and serves as the narrower half of its staggered 20-inch arrangement.

Modern metric sizing is straightforward once you know where to look, but it is still important to match the exact code rather than just the wheel diameter. A 245/35R20 and a 245/40R20 both fit 20-inch wheels, yet they differ in overall height and intended application. For a 2015 Maserati GranTurismo, the complete size code is what keeps the tire consistent with the car's original wheel package and stance.

No. 2015 Maserati models share some sizes, but the full range is not interchangeable. Ghibli and Quattroporte overlap in 245/35R21, 245/40R20, 245/45R19, 275/40R19, 285/30R21, and 285/35R20, while GranTurismo uses 245/35R20 at the front and shares only 285/35R20 at the rear. Ghibli also has unique 18-inch fitments in 235/50R18 and 275/45R18.

That difference matters because many 2015 Maserati cars run staggered setups, and the same make can move between four rim diameters in one model year. If you are replacing only two tires, verify front and rear sizes separately. If you are working from a used set of wheels or a recently acquired car, checking the sidewall on each axle is often the quickest way to confirm what is actually mounted before choosing replacements.

Most 2015 Maserati tire sizes here are available as blackwalls, which is the dominant appearance across 235/50R18, 245/45R19, 275/40R19, 275/45R18, and 245/35R20. Two 20-inch sizes add another option: 245/40R20 and 285/35R20 are also available with raised white letters. That means sidewall appearance is broader on some 20-inch applications than on the 18- and 19-inch sizes.

For a 2015 Maserati, blackwall styling is usually the cleaner and more factory-oriented visual choice, especially on late-model Italian luxury and GT cars. Raised white letters create a more assertive aftermarket look and may appeal to owners building around a custom wheel-and-tire presentation rather than a stock appearance. Choose sidewall style after you have confirmed the correct size, since only certain fitments offer that cosmetic flexibility.

2015 Maserati fitments are covered here by BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. BFGoodrich and Nitto appear across several core sedan and coupe sizes, including 235/50R18, 245/45R19, 275/40R19, 245/35R20, 245/40R20, and 285/35R20. Pro-Trac appears in the 20-inch sizes with RWL sidewalls, while M&H Racemaster appears in the 275/45R18 application.

That spread gives a 2015 Maserati owner a mix of mainstream performance-oriented radial choices and a few more specialized alternatives. The right brand depends less on badge loyalty than on your exact size, desired sidewall appearance, and how closely you want to mirror the car's original luxury-performance look. Once the fitment is narrowed to the correct axle and wheel diameter, comparing brand families becomes much more useful.

On several 2015 Maserati sizes, BFGoodrich g-Force Comp 2 A/S and Nitto NT555 G2 overlap in fitment but differ in some published details. In 235/50R18, the BFGoodrich uses a 6.5 to 8.5-inch rim width range, while the Nitto spans 6.5 to 8.5 with a 7.5-inch measuring width and carries a 1,819-pound load figure at 50 psi. In 245/45R19 and 275/40R19, BFGoodrich includes rim-width guidance and Nitto remains a blackwall radial alternative in the same basic size family.

For a 2015 Maserati owner, that means the decision can come down to the combination of exact fitment details, sidewall preference, and the specific character of the tire line rather than raw size alone. If you are matching a set on one axle, compare the sidewall marking, load index, and any published rim-width range to the wheel already on the car. Small differences matter more on staggered performance fitments than they do on ordinary sedan tires.

Several 2015 Maserati sizes include published rim-width guidance. The 235/50R18 fits 6.5 to 8.5-inch rims, 245/45R19 fits 7.5 to 9 inches, 275/40R19 fits from 9 to 11 inches depending on product, 245/35R20 fits 8 to 9.5 inches, 245/40R20 fits 8 to 9.5 inches, 285/35R20 fits 9.5 to 11 inches, and 275/45R18 appears here with a 12-inch rim width specification.

Rim width affects how the sidewall sits, how the tread presents to the road, and whether the tire remains within the maker's intended fitment window. On a 2015 Maserati, that matters most when replacing only one axle or when the car has aftermarket wheels. Confirm the actual wheel width before ordering, especially on 20- and 21-inch staggered packages where the front and rear dimensions are often very different even when the model name stays the same.

Most 2015 Maserati applications here are modern radial tires without any tube-type marking, which points to tubeless use on the appropriate wheels. The 285/35R20 size is the one to watch more closely, because tube status varies by product and one version is marked TL. That means you should not assume every tire in that size follows the same casing and mounting convention.

The practical step is to verify the exact sidewall marking on the tire you intend to use and make sure it matches the wheel and valve-stem setup on the car. A 2015 Maserati owner replacing only one pair should also make sure both tires on that axle follow the same basic construction and service type. When a size includes mixed markings, the individual product choice matters as much as the nominal size itself.

No single original wheel will cover every 2015 Maserati tire size because the year spans 18-, 19-, 20-, and 21-inch rim diameters. Ghibli alone can appear with 18, 19, 20, or 21 inches, Quattroporte spans 19 through 21 inches, and GranTurismo uses 20-inch front and rear fitments. Wheel diameter must match the tire exactly, and the front and rear wheels may differ on staggered cars.

Original Maserati wheels can still be reused successfully when the replacement tire matches the existing wheel diameter and falls within the correct width range for that wheel. Before moving from one Maserati size to another, check the stamping on the wheel or measure it directly rather than assuming cross-compatibility because the cars share a brand or model year. That is especially important when a car has changed hands or may have aftermarket wheels.

A 2015 Maserati should be stored on a clean, dry surface away from direct sunlight, electric motors, battery chargers, and other ozone-producing sources that age rubber prematurely. Keep the tires properly inflated, move the car occasionally so one contact patch is not carrying the load for months at a time, and use stands only if they are placed correctly and the suspension plan is understood. Radials generally tolerate storage better than old-style bias-ply tires, but they still age from heat, light, and inactivity.

Good storage habits matter on a low-use Maserati because high-performance tires can look healthy long after the rubber has begun to harden. If the car sits for extended periods, inspect for sidewall cracking, tread-block distortion, and pressure loss before returning it to the road. A breathable indoor cover for the car helps, but it does not replace controlling temperature swings and keeping the tires out of UV exposure.

For a 2015 Maserati, age matters at least as much as mileage. Collector and specialty tires are often evaluated closely once they reach about five to seven years of service, and replacement becomes a serious consideration as they approach the ten-year mark regardless of remaining tread depth. The DOT date code on the sidewall is the best reference for the tire's actual age.

A low-mileage Maserati can still need tires because rubber compounds harden over time and may lose grip or develop cracking even when the tread appears generous. If the car is driven infrequently, build tire age checks into regular maintenance rather than waiting for wear bars. That is especially wise on staggered fitments, where replacing one axle at a time can hide the fact that the older pair has aged out even if it still looks presentable.

Tires on a 2015 Maserati should be inspected before every drive and again before any longer highway outing. Check pressure, tread wear, cuts, bulges, curb damage, and early sidewall cracking, and look for signs that the car is wearing one axle differently from the other. On sizes where product construction details vary, it is also smart to inspect valve stems and confirm that both tires on the axle remain matched.

Frequent inspection is especially worthwhile on a Maserati because wide, low-profile tires can hide problems until vibration, pull, or road noise becomes obvious. A quick visual check takes only minutes and can prevent a long trip from being cut short by an avoidable issue. If the car has been stored, recheck pressure after the first short drive and look for any flat-spotting or unusual heat buildup.

Yes, the 2015 Maserati sizes here are modern radial fitments intended for road use, and many carry W or Y speed ratings. W is rated to 168 mph, while Y is rated for 186-plus mph. Those figures are well beyond ordinary U.S. highway speeds, so for normal road driving the condition, age, inflation, and proper fitment of the tire usually matter more than the top-end speed symbol alone.

The larger safety picture on a 2015 Maserati also includes alignment, suspension condition, brake health, and whether front and rear tires are matched correctly on a staggered setup. A fresh set of correctly sized tires on a neglected chassis will not make the car road-ready by itself. If the car is new to you, treat the first longer trip as a full mechanical recommissioning exercise rather than a tire-only decision.

Inflation pressure on a 2015 Maserati should start with the factory recommendation for the exact model and wheel package, then be checked against the tire maker's rating for the specific product you choose. Some published maximum load and pressure figures appear within these sizes, including 1,609 pounds at 51 psi and 1,819 pounds at 50 psi for 235/50R18, 1,874 pounds at 50 psi for 245/45R19, 2,039 pounds at 50 psi for 275/40R19, and 1,323 pounds at 35 psi for 275/45R18.

Those figures are not blanket running pressures to copy across every Maserati tire. They are product-specific capacity references, and the correct day-to-day pressure still depends on the car, axle position, and intended use. Use the door-jamb or owner's manual recommendation as your baseline, then confirm that the chosen tire supports that operating range. Never transfer a pressure number from one size to another just because both fit the same model year.

Before a longer trip in a 2015 Maserati, inspect each tire for cracking, cuts, punctures, bulges, uneven wear, and any sign of impact damage on the sidewall or shoulder. Confirm cold pressures, verify that front and rear sizes match the wheel positions, and check the spare if the car carries one. It is also wise to look closely at valve stems and ensure the tires have not aged out even if the tread still appears deep.

Tires are only one part of the pre-drive picture on a performance luxury car, so pair that inspection with a broader check of brakes, fluids, cooling system, and battery condition. A 2015 Maserati that sits for long periods may feel fine around town and still reveal problems at sustained highway speed. Catching an old tire, slow leak, or mismatched rear pair in the garage is far easier than discovering it on the shoulder.