The 1966 Maserati Ghibli arrived at the height of the grand touring era, pairing dramatic Italian styling with the long-hood, high-speed presence buyers still associate with Maserati's most elegant road cars. Its tire fitment reflects that blend of continental touring character and period performance flavor, with 15-inch radial choices in both 205R15 and GR70-15. That creates a meaningful decision between a more traditional Euro-metric radial presentation and vintage alphanumeric radial options with sidewall treatments such as blackwall, wide whitewall, pin white stripe, or raised white letter. For restoration-minded ownership or regular road use, wheel setup and the look you want are just as important as the size itself.
Which Tire Size Is Right for The 1966 Maserati Ghibli
The 1966 Maserati Ghibli uses two primary tire sizes, both built for 15-inch rims. Because the Base model can use either 205R15 or GR70-15, the key decision is not identifying a different sub-model, but choosing the size format, wheel width compatibility, and visual style that best matches the car's current wheel setup and intended presentation.
A 205R15 is a Euro-metric radial size with a nominal section width of 205 millimeters, radial construction, and a 15-inch rim diameter; in this format, the aspect ratio is not stated in the size itself. On the 1966 Maserati Ghibli, it suits buyers who want a classic European tire format that feels appropriate to a grand touring car of the period. Available choices include Phoenix and Avon, with blackwall and wide whitewall appearances and tire series such as European Passenger and Textile. This size is worth considering when the goal is a refined radial fitment with a distinctly continental look.
GR70-15 is an alphanumeric radial size in which the letter designation identifies the tire's size class, the 70-series number points to its profile family, and the 15 denotes rim diameter. For a 1966 Maserati Ghibli, this size opens the door to vintage-style radial choices that echo late-period performance tire styling rather than a plain metric presentation. Goodyear offerings include series such as GM Custom Tread, Steelgard, and Custom Wide Tread, with pin-white-stripe and raised white letter sidewall treatments. This size deserves a close look when appearance and wheel-width compatibility are central to the decision.
Fitment is straightforward here because the covered sub-model shares the same two radial tire sizes. Checking the exact sub-model still helps confirm that the car falls within this fitment group before comparing style, wheel width, and tire presentation.
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1966 Maserati Ghibli Base
The 1966 Maserati Ghibli Base uses 15-inch radial fitments and can be equipped with either 205R15 or GR70-15. That means the selection process centers on wheel compatibility and the look you want, whether that is a classic Euro-metric radial presentation or a more vintage performance-style sidewall treatment.
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 1966 Maserati Ghibli Tires for Sale
Available 1966 Maserati Ghibli tires cover both 205R15 and GR70-15 fitments, with choices from Phoenix, Avon, and Goodyear. The product grid lets you compare sidewall styles including blackwall, wide whitewall, pin-white-stripe, and raised white letter, along with different radial series and wheel-width requirements.
These FAQs focus on the two radial tire sizes used on the 1966 Maserati Ghibli, how they relate to 15-inch wheels, and how to compare style, fitment, restoration appearance, and road-use considerations.
Tire Size & Fitment
What tire size fits a 1966 Maserati Ghibli?
The 1966 Maserati Ghibli uses two primary tire sizes: 205R15 and GR70-15. Both are radial fitments for 15-inch rims, and the Base model is associated with both sizes rather than being limited to only one of them.
That means the decision comes down to the actual wheel setup on the car and the kind of appearance you want. A Ghibli with wheels suited to a narrower Euro-metric radial may point you toward 205R15, while a car set up for a wider vintage alphanumeric radial may lead you toward GR70-15.
What size rim does a 1966 Maserati Ghibli use?
The tire fitments for the 1966 Maserati Ghibli are built around a 15-inch rim diameter. Both 205R15 and GR70-15 share that same rim diameter, so the first wheel measurement to confirm is 15 inches.
Rim diameter alone is not the whole story, because the available tires do not all call for the same rim width. Before choosing between the two sizes, confirm the actual wheel width on the car so the tire matches both the 15-inch diameter and the wheel's usable width range.
What does 205R15 mean on a 1966 Maserati Ghibli?
On a 1966 Maserati Ghibli, 205R15 is a Euro-metric radial size. The 205 refers to nominal section width in millimeters, the R indicates radial construction, and the 15 identifies the rim diameter in inches.
This format does not state an aspect ratio in the size itself, so it reads differently from a modern P-metric tire. For a Ghibli owner, the practical value is that it points toward a classic European-style radial fitment, but wheel width, sidewall preference, and overall presentation still need to be considered before making a final choice.
Choosing the Right Tire
What should I consider when choosing a 205R15 tire for a 1966 Maserati Ghibli?
Start with wheel compatibility, because the 205R15 options are not just about size alone. In this fitment, 205R15 is available as a radial in different presentations, including a Phoenix wide whitewall in the European Passenger series and an Avon blackwall in the Textile series.
That gives the 1966 Maserati Ghibli owner a choice between a more decorative sidewall treatment and a cleaner blackwall look within the same basic size. It also makes sense to compare load information where given, overall appearance, and how the tire complements the car's grand touring character and current wheel setup.
What sidewall styles are available for 1966 Maserati Ghibli tires?
The 1966 Maserati Ghibli has several sidewall styles available across its two tire sizes. Current options include blackwall and wide whitewall in 205R15, plus pin-white-stripe and raised white letter treatments in GR70-15.
Those sidewall choices can change the car's visual character even when the rim diameter stays the same. A buyer aiming for a restrained European touring look may lean toward blackwall, while whitewall, pin stripe, or raised white letter options create a more stylized period presentation that should be matched to the car's wheels and overall build.
What brands offer tires for the 1966 Maserati Ghibli?
Tires for the 1966 Maserati Ghibli are available from Phoenix, Avon, and Goodyear. Phoenix and Avon appear in the 205R15 fitment, while Goodyear offerings cover the GR70-15 size in several vintage-style radial series.
Brand choice matters most when it aligns with the size and appearance you want rather than as a simple name preference. One buyer may be focused on a classic Euro-metric radial with a blackwall or wide whitewall, while another may want a Goodyear alphanumeric radial with pin stripe or raised white letter styling.
Restoration & Appearance
Which tire should I choose for a period-style 1966 Maserati Ghibli?
A period-style choice for a 1966 Maserati Ghibli starts with deciding whether the car should present more like a European grand tourer or with a stronger vintage performance-tire visual. The 205R15 format carries a classic Euro-metric radial look, while GR70-15 brings an alphanumeric radial style associated with later period performance presentation.
That makes the correct-looking tire less about one universal answer and more about the exact appearance of the individual car. For a restoration where originality matters closely, compare the tire choice against marque literature, period photography, or model-specific historical references before settling on sidewall style and size format.
How does tire construction affect the appearance of a restored 1966 Maserati Ghibli?
On the 1966 Maserati Ghibli, both primary fitments are radial, but construction still influences appearance because the two size formats present the car differently. A 205R15 has a more traditional European metric look, while GR70-15 carries a vintage alphanumeric performance style often paired with more expressive sidewall treatments.
That difference can noticeably change the visual balance of a restored car even before the vehicle moves. Owners pursuing a refined, continental presentation may favor the simpler metric radial look, while those wanting a stronger period-performance impression may spend more time comparing GR70-15 series and sidewall styling.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1966 Maserati Ghibli?
Yes, modifications can affect tire fitment on a 1966 Maserati Ghibli even when the tire size itself is correct on paper. Changes to wheel width, wheel offset, suspension height, steering components, or body clearance can all influence whether 205R15 or GR70-15 remains a practical choice.
A car with aftermarket wheels or altered suspension should be measured as it sits rather than judged only by the original fitment range. Confirm wheel diameter and width first, then check clearance at full steering lock and through suspension travel so the selected tire matches the car's actual setup.
What should I inspect before driving a 1966 Maserati Ghibli on new tires?
Before driving a 1966 Maserati Ghibli on new tires, inspect the wheels for correct diameter and condition, verify that the tires seat properly, and make sure inflation is set appropriately for the tire being used. It also helps to check for rubbing at the fenders, suspension, and steering components.
A careful road-use check should include lug hardware, valve stems, alignment feel, and any sign of interference during slow full-lock turns. On a collector car that may have sat for long periods, it is also wise to inspect brake function and suspension condition so the new tires are not masking another issue.
How should tires on a collector 1966 Maserati Ghibli be maintained?
Tires on a collector 1966 Maserati Ghibli should be maintained with regular pressure checks, visual inspections, and careful storage habits. Even when tread wear is low, a seldom-driven grand touring car can develop age-related issues such as cracking, flat spotting, cuts, bulges, or slow air loss.
Consistent maintenance also means keeping the car away from prolonged heat, direct sunlight, and ozone sources during storage. Periodically moving the car, checking sidewalls closely, and inspecting the wheels for corrosion or damage will help preserve either 205R15 or GR70-15 tires between drives and before longer outings.
