2008 Maserati sits in the modern grand-touring era, when the marque blended Ferrari-era engineering with dramatic Italian styling in both a sleek coupe and an executive sedan. The year’s range centers on the GranTurismo and Quattroporte, two cars with distinct roles but overlapping performance intentions. Tire sizing varies across the two-model lineup, with eight radial sizes in play and only two shared between both models, so the real choice starts with identifying the exact model and wheel diameter rather than assuming one 2008 Maserati size fits all. Once that is confirmed, the next step is narrowing to the correct front and rear sizing for the way your car is equipped.
Which Tire Size Is Right for Your 2008 Maserati
Eight tire sizes are used across 2008 Maserati vehicles, and they vary by model rather than carrying across the whole range. Every size here is a radial, so the main decision is confirming whether your car is on 18-, 19-, or 20-inch wheels and then matching the correct front and rear sizes for either the GranTurismo or Quattroporte. Understanding that distinction before choosing a product saves time and helps ensure the right match.
Year(s): 2008|Fit(s): GranTurismo, Quattroporte|Construction: Radial|Rim: 20 in
245/35R20 is a metric radial size with a 245-millimeter section width, a 35-series aspect ratio, and a 20-inch rim diameter. It is available from BFGoodrich and Nitto in Blackwall form, with W and Y speed-rated variations depending on product. Because this size is shared by both 2008 Maserati models, it is one of the easier crossover sizes for owners comparing wheel packages. It suits cars already equipped for 20-inch fitment and buyers who want a contemporary high-performance radial in an understated sidewall style.
Year(s): 2008|Fit(s): GranTurismo, Quattroporte|Construction: Radial|Rim: 19 in
245/40R19 is a metric radial size that reads as 245 millimeters wide, 40-series profile, on a 19-inch wheel. BFGoodrich offers this size in Blackwall form, and speed ratings vary by product between W and Y. This is another shared size across both the GranTurismo and Quattroporte, making it important for owners sorting out alternate factory wheel diameters. It is a sensible choice when your car is on 19-inch wheels and you want to stay with a modern performance-oriented radial format.
Year(s): 2008|Fit(s): GranTurismo|Construction: Radial|Rim: 20 in
285/35R20 is a metric radial with a 285-millimeter section width, a 35-series profile, and a 20-inch rim diameter. This size is specific to the 2008 Maserati GranTurismo rather than universal across the year and make, and it is available from BFGoodrich, Nitto, and Pro-Trac in Blackwall and RWL sidewall styles. Speed ratings vary by product, with W rated tires capped at 168 mph and Y rated tires capped at 186 mph. It is the rear fitment to focus on for GranTurismo applications running 20-inch wheels, especially if sidewall appearance is part of the decision.
285/40R19 is a metric radial size with a 285-millimeter width, a 40-series aspect ratio, and a 19-inch wheel diameter. This size is specific to the 2008 Maserati GranTurismo, but no product range is present here to compare brands, sidewall styles, or speed ratings. Its role is primarily to help GranTurismo owners distinguish the 19-inch rear package from the model's 20-inch setup. Confirming the actual wheel diameter on the car is especially important before moving forward with this size.
Year(s): 2008|Fit(s): Quattroporte|Construction: Radial|Rim: 18 in
245/45R18 is a metric radial size that denotes a 245-millimeter section width, a 45-series profile, and an 18-inch rim diameter. This size is specific to the 2008 Maserati Quattroporte and is available from BFGoodrich and Nitto in Blackwall form, with W and Y speed-rated variations depending on product. It gives Quattroporte owners a clear path if their sedan carries the 18-inch front setup rather than the larger 19- or 20-inch alternatives. Buyers comparing tires within this size can also use the rim-width range and load figures to narrow the best match for their wheels.
Year(s): 2008|Fit(s): Quattroporte|Construction: Radial|Rim: 19 in
285/35R19 is a metric radial with a 285-millimeter section width, 35-series aspect ratio, and 19-inch rim diameter. This size is specific to the 2008 Maserati Quattroporte and comes from BFGoodrich and Pro-Trac in Blackwall and RWL sidewall styles, with W rated options capped at 168 mph and Y rated options capped at 186 mph. It is the size to focus on for Quattroporte applications using the 19-inch rear wheel package rather than the 18-inch setup. Sidewall appearance may matter here as much as brand choice for owners balancing factory-like presentation with a more custom look.
Year(s): 2008|Fit(s): Quattroporte|Construction: Radial|Rim: 18 in
285/40R18 is a metric radial size with a 285-millimeter width, a 40-series profile, and an 18-inch wheel diameter. This Quattroporte-specific size is available from Nitto and Pro-Trac with Blackwall, Redline, and RWL sidewall styles, and the Nitto version carries a W speed rating capped at 168 mph. It is the rear size to match with 18-inch Quattroporte wheel packages, so it should not be confused with the sedan's 19- or 20-inch alternatives. Owners who care about visual character have more sidewall-style variety here than in many modern performance sizes.
295/30R20 is a metric radial size with a 295-millimeter section width, a 30-series aspect ratio, and a 20-inch rim diameter. This size is specific to the 2008 Maserati Quattroporte, but no product range appears here to compare brands, sidewall styles, or speed ratings. Its main value on this page is helping separate the Quattroporte's 20-inch rear fitment from its 18- and 19-inch combinations. Check the wheel diameter and the matching front size on the car before choosing anything in this range.
Two 2008 Maserati models are covered here. They do not use the same tire sizes across the board, and only the 245/35R20 and 245/40R19 front sizes overlap between both models, so identifying whether you have a GranTurismo or Quattroporte is the first fitment step. Select a model below for model-specific fitment history and products.
2008 Maserati GranTurismo
The 2008 Maserati GranTurismo is the marque's elegant V8 coupe, designed as a high-speed grand tourer with long-hood proportions and a strong emphasis on style as much as pace. Its tires mount on 19-inch or 20-inch wheels depending on the setup, with staggered front and rear sizing that suits the car's low, wide stance. GranTurismo owners should confirm which wheel package is on the car before selecting front and rear replacements.
The 2008 Maserati Quattroporte is a distinctive Italian luxury sport sedan, combining formal four-door proportions with the sharper road manners expected from the brand. Its tire packages span 18-, 19-, and 20-inch wheel diameters, again with staggered front and rear sizing rather than a one-size-fits-all arrangement. That wider spread makes wheel verification especially important on a Quattroporte before narrowing to the correct set.
24 products are available across eight tire sizes for 2008 Maserati vehicles. 245/35R20, 245/40R19, 245/45R18, 285/35R20, 285/35R19, and 285/40R18 cover BFGoodrich, Nitto, and Pro-Trac radial options with Blackwall, RWL, and Redline sidewall styles. Confirm your exact size and wheel diameter before selecting, since speed ratings can vary within the same size.
These FAQs cover how tire sizes split between the 2008 Maserati GranTurismo and Quattroporte, what the modern metric size codes mean, how sidewall styles and brands differ by size, and what to inspect on a low-use performance car before driving or storing it.
Size Basics & Fitment
What tire sizes fit 2008 Maserati vehicles?
2008 Maserati vehicles use eight radial sizes across two models: 245/35R20, 245/40R19, 285/35R20, 285/40R19, 245/45R18, 285/35R19, 285/40R18, and 295/30R20. The GranTurismo uses 245/40R19 and 285/40R19 with its 19-inch package or 245/35R20 and 285/35R20 with its 20-inch package. The Quattroporte uses 245/45R18 and 285/40R18 on 18-inch wheels, 245/40R19 and 285/35R19 on 19-inch wheels, or 245/35R20 and 295/30R20 on 20-inch wheels.
That means year and make alone are not enough to choose tires for a 2008 Maserati. You need the model first, then the wheel diameter, then the matching front and rear size combination. Shared front sizes between the two models can create confusion if you only look at one axle, so it helps to verify the complete staggered setup already on the car before replacing anything.
What does 245/35R20 mean on a 2008 Maserati tire?
On a 2008 Maserati, 245/35R20 is a metric radial size code. The 245 is the nominal section width in millimeters, 35 is the aspect ratio, meaning the sidewall height is 35 percent of the section width, R identifies radial construction, and 20 is the wheel diameter in inches. This size appears as a front fitment on certain 20-inch GranTurismo and Quattroporte applications.
Reading the code correctly matters because 245/35R20 does not interchange with 245/40R19 even though both are front sizes used by 2008 Maserati models. One fits a 20-inch wheel and the other fits a 19-inch wheel, so the tire must match the wheel diameter exactly. It is also worth confirming the matching rear size, since both Maserati models use staggered setups rather than the same size at all four corners.
Do all 2008 Maserati models use the same tire size?
No. The 2008 Maserati GranTurismo and 2008 Maserati Quattroporte share only two front sizes, 245/35R20 and 245/40R19, and each model also has sizes that are unique to its own wheel packages. GranTurismo-specific sizes include 285/35R20 and 285/40R19, while Quattroporte-specific sizes include 245/45R18, 285/35R19, 285/40R18, and 295/30R20.
That split is important because a shared front size does not mean the rear size is the same, or that the cars use the same complete package. Maserati offered multiple wheel diameters and staggered combinations in 2008, so the safest approach is to confirm the model and measure or read the size on both front and rear tires. That avoids mixing a correct front fitment with the wrong rear tire.
Buying the Right Tire
What sidewall styles are available for 2008 Maserati tires?
Most 2008 Maserati tire sizes here are available in Blackwall form, which is the most natural visual match for a modern Italian performance car. Some rear sizes also introduce styling alternatives: 285/35R20 and 285/35R19 are available with RWL sidewalls, and 285/40R18 is available in Blackwall, RWL, and Redline versions. Sidewall appearance varies by size, so the front and rear choices are not always identical in styling options.
For an original-looking presentation on a 2008 Maserati, Blackwall is usually the most straightforward choice. RWL and Redline options lean more custom in appearance, which may appeal to owners who want a more personalized look than factory-style visual restraint. If appearance matters, compare the front and rear sidewall styles together before committing, especially on staggered Quattroporte and GranTurismo setups where only the rear size may offer decorative sidewall choices.
What brands make tires for 2008 Maserati vehicles?
BFGoodrich, Nitto, and Pro-Trac cover the currently available 2008 Maserati fitments that have products in range. BFGoodrich appears in 245/35R20, 245/40R19, 245/45R18, 285/35R20, and 285/35R19. Nitto appears in 245/35R20, 245/45R18, 285/35R20, and 285/40R18, while Pro-Trac appears in 285/35R20, 285/35R19, and 285/40R18.
Brand choice on a 2008 Maserati often comes down to which exact axle size you need and whether you want a conventional Blackwall look or a more stylized sidewall. Some sizes offer only one or two brands, while others give broader overlap. It is smart to compare by the full front-and-rear combination rather than shopping one size in isolation, because the best-matched set may depend on what each brand covers across both axles.
What is the difference between BFGoodrich and Pro-Trac options for the 2008 Maserati?
On 2008 Maserati rear sizes where both brands appear, the most obvious difference is sidewall presentation. In 285/35R20 and 285/35R19, BFGoodrich options are Blackwall performance radials with W or Y speed-rated versions depending on product, while Pro-Trac Street Pro III offers an RWL sidewall in those same sizes. In 285/40R18, Pro-Trac expands the styling choice further with both Redline and RWL versions, while Nitto carries the Blackwall alternative in that size.
That means the decision is not only about brand name but also about the look you want on the car. A Blackwall tire keeps the appearance closest to modern OEM-style restraint, while RWL or Redline creates a more customized visual statement. For a 2008 Maserati owner, that is especially relevant on staggered rear fitments where the tire sidewall is prominent and can change the overall character of the car.
Fitting & Setup
What rim width do 2008 Maserati tires require?
Several 2008 Maserati sizes have clear rim-width ranges. 245/35R20 and 245/40R19 both fit 8.0 to 9.5-inch rims in the products that specify a width range. 245/45R18 fits 7.5 to 9.0 inches, 285/35R20 fits 9.5 to 11.0 inches where stated, 285/35R19 fits either 9.5 to 10.0 inches or 9.5 to 11.0 inches depending on product, and 285/40R18 fits 9.5 to 11.0 inches.
Those ranges are useful because a correct tire size still needs an appropriate wheel width to perform as intended. If your wheel sits near the narrow or wide end of the range, compare products carefully before choosing. This matters most on a 2008 Maserati with staggered wheels, since the front and rear widths differ and a tire that works on one axle may not suit the wheel width on the other.
Do 2008 Maserati tires require inner tubes?
The 2008 Maserati fitments shown here are modern radial performance sizes, and the products that identify tube status indicate tubeless construction. One 285/35R20 BFGoodrich tire is marked TL, and one 285/35R19 BFGoodrich tire is marked XLTL, both indicating tubeless service. Other products do not carry a separate tube marker in the visible size line, but they are still modern radial performance tires intended for contemporary wheel applications rather than vintage tube-type use.
In practice, most 2008 Maserati owners will be dealing with tubeless fitment on the original style wheels for these sizes. The key check is wheel condition: bead seat corrosion, bent rims, or damaged valves can create air-loss problems even with the correct tubeless tire. If the car has aftermarket wheels or a history of repairs, inspect the wheels as carefully as the tires before mounting a new set.
Can the original 2008 Maserati wheels be used with all tire sizes?
No single original 2008 Maserati wheel works with all eight tire sizes, because the year uses 18-inch, 19-inch, and 20-inch wheel diameters across the GranTurismo and Quattroporte. A tire must always match the wheel diameter exactly, so a 245/45R18 cannot mount on a 19-inch wheel, and a 295/30R20 cannot mount on an 18-inch or 19-inch wheel. The front and rear pairings also change with each wheel package.
That makes wheel verification the first step before replacing tires on a 2008 Maserati. Even within one model, Maserati offered multiple wheel diameters, so visual identification alone is not always enough. Read the existing tire size or measure the wheel, then confirm that the front and rear sizes belong to the same package. That prevents mixing an 18-inch front setup with a 19-inch or 20-inch rear by mistake.
Maintenance, Storage & Longevity
How should I store a 2008 Maserati when the tires are fitted?
A 2008 Maserati should be stored in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment that can age rubber. Keep the tires clean, maintain proper inflation, and avoid letting the car sit for long periods on underinflated tires. Modern radial tires resist flat-spotting better than older bias-ply designs, but they still benefit from periodic movement during long storage.
If the car will sit for months, rolling it occasionally can help reduce localized stress on the tread and carcass. Some owners also use tire cradles or stands to reduce static load, especially on heavy luxury-performance sedans like the Quattroporte. Storage habits matter as much as mileage on a collector-minded 2008 Maserati, because age and environmental exposure often determine tire condition long before the tread is worn out.
How long do tires on a 2008 Maserati typically last?
On a 2008 Maserati, tire life should be judged by age and condition at least as much as by tread depth. A good rule is to inspect them closely every year after the five-year point and to treat around ten years from the DOT date code as the stage where replacement deserves serious consideration even if the tires still look usable. Heat cycles, storage conditions, and long periods of inactivity can shorten that practical lifespan.
This matters because many GranTurismo and Quattroporte cars cover limited mileage but still carry performance tires that age out before they wear out. A tire can have plenty of tread and still be too old for confident use if the rubber has hardened or cracked. Reading the DOT date code on each tire gives you a clearer picture than mileage alone when deciding whether your 2008 Maserati is ready for continued road use.
How often should tires on a 2008 Maserati be inspected?
Tires on a 2008 Maserati should be checked before every drive and more thoroughly before any extended highway outing. Look for sidewall cracking, cuts, bubbles, punctures, uneven wear, and pressure loss, and inspect the valve stems at the same time. On a staggered setup, compare both front tires with each other and both rear tires with each other, since alignment or suspension issues can show up differently from axle to axle.
Frequent inspection is especially important on a low-use performance car because problems can develop during storage as easily as during driving. If one tire repeatedly loses pressure, do not assume it is just seasonal temperature change; inspect the wheel, valve, and tire assembly. Catching those issues early helps protect the wheels and preserves the stable, predictable road manners that a 2008 Maserati should have when everything is right.
Safety & Road Use
Are 2008 Maserati tires safe for highway driving?
Yes, the available 2008 Maserati fitments here are modern radial performance tires with W and Y speed-rated examples depending on size and product. W-rated tires are capped at 168 mph, and Y-rated tires are capped at 186 mph. Those ratings are far beyond normal U.S. highway use, so under ordinary road speeds the more important factor is having the correct size, a healthy tire condition, and proper inflation.
A 2008 Maserati is also a high-performance car whose braking, suspension, and alignment condition matter just as much as the speed symbol on the sidewall. Even with a high-rated tire, cracked rubber, poor inflation, bent wheels, or worn suspension parts can undermine stability. Think of the speed rating as one part of the package, not the only measure of whether the car is ready for a highway trip.
What inflation pressure should I use for 2008 Maserati tires?
The pressure figures visible here are tire maximum load pressures, not Maserati's vehicle placard settings. Examples include 1521 pounds at 50 psi for one 245/35R20 BFGoodrich tire, 1653 pounds at 50 psi for certain 245/40R19 products, 1764 pounds at 50 psi for some 245/45R18 products, 1930 pounds at 50 psi for one 285/35R19 option, and 2039 pounds at 50 psi for a 285/40R18 Nitto. Those values should not be treated as the everyday inflation target for the car.
For actual operating pressure on a 2008 Maserati, start with the factory door-jamb or owner's manual recommendation for the specific model and wheel package, then compare that with the tire manufacturer's guidance for the exact product you are using. Do not transfer one size's pressure assumptions to another, especially on staggered setups. Front and rear requirements may differ, and wheel diameter changes can mean different recommended pressures as well.
What should I check before taking a 2008 Maserati on a longer drive?
Before a longer drive in a 2008 Maserati, inspect all four tires for cracking, cuts, bulges, punctures, unusual shoulder wear, and proper inflation. Check the valve stems, confirm that front and rear sizes match the intended staggered setup, and make sure the spare and inflator equipment are still usable if the car carries them. A quick visual check is not enough if the car has been sitting for weeks or months.
Tires are only one part of the pre-drive routine on a car like this. Wheel torque, brake condition, fluid levels, and suspension behavior deserve the same attention, especially on a high-speed touring car that may spend long periods parked between outings. If the tires are older, have uneven wear, or show any sidewall distress, solve that first rather than hoping the problem stays minor once the trip is underway.
