1958 Maserati Tire Fitment Guide

1958 Maserati vehicles use five distinct tire sizes, all on 16-inch rims. The Maserati 200 uses 525-16, the Maserati 300 uses either 175R16 or 600-16, the Maserati 3500 uses either 185R16 or 650-16, and the Maserati 450 uses either 175R16 or 600-16. Rim width ranges are listed for several sizes: 525-16 uses 4.00 to 4.25 inches, 600-16 uses 4.00 to 4.50 inches, 185R16 appears on 4.50 to 6.50-inch recommendations depending on brand, and 650-16 uses 4.50 to 5.00 inches where specified.

The practical takeaway is that every 1958 Maserati buyer should start by identifying the exact model, because tire size is not shared across the full lineup. After that, the next question is whether the car is being kept in a bias-ply format or fitted in one of the radial sizes available for certain models. Wheel diameter is consistent at 16 inches, but width compatibility still needs to be checked against the actual wheel and the specific tire being considered.

On a 1958 Maserati, 600-16 is a numeric bias-ply size. The first number is the nominal section width in inches, expressed without a decimal, so 600 means roughly 6.00 inches wide, while 16 is the wheel diameter in inches. In the 1958 Maserati range, that size is used on the 300 and 450 models rather than across every Maserati model for the year.

That code matters because it places the tire in an earlier sizing system than modern metric radials. A 600-16 buyer is usually looking for the visual profile and driving character associated with bias-ply construction, and there are also sidewall appearance choices in this size, including blackwall and wide whitewall. It is worth confirming the rim width before final selection, since products in 600-16 commonly call for a 4.00 to 4.50-inch wheel.

On a 1958 Maserati, 175R16 and 185R16 are Euro-metric radial sizes. The first number is the nominal section width in millimeters, the R indicates radial construction, and 16 is the wheel diameter in inches. The 175R16 size appears on the Maserati 300 and 450, while 185R16 is associated with the Maserati 3500.

These codes matter because they represent a different construction and sizing convention from the numeric bias-ply options used elsewhere in the 1958 Maserati lineup. A radial in one of these sizes changes the conversation from simple size matching to how the car will be driven and what kind of road feel the owner wants. For the 185R16 size in particular, brand-specific speed ratings and even tube status can differ, so the sidewall marking on the exact tire should be checked before fitting.

For a 1958 Maserati 300 or 450, the choice between 600-16 and 175R16 is primarily a choice between bias-ply and radial construction. The 600-16 size is the numeric bias-ply option used on those models, while 175R16 is the radial option tied to the same pair of models. Both fit 16-inch wheels, so the first task is confirming which of those two Maserati models you own and whether the car is being kept in a traditional bias-ply format or fitted in radial form.

Owners focused on a period-style appearance and feel usually gravitate toward the 600-16 route, especially because that size is offered in both blackwall and wide whitewall versions. Owners prioritizing a radial setup on a 300 or 450 will be looking to the 175R16 path instead. Since the products listed here are concentrated under the bias-ply 600-16 size, a buyer should confirm the exact target construction before spending time comparing brand or sidewall appearance.

1958 Maserati tires are available in both blackwall and wide whitewall styles, depending on size. The 525-16 and 185R16 offerings are blackwall only, while 600-16 and 650-16 include both blackwall and wide whitewall choices. That means sidewall appearance is not uniform across the range and follows the specific size attached to the model.

For many Maserati restorations of this era, blackwall tends to be the more straightforward appearance choice, especially on sporting and competition-oriented cars. Whitewall availability in 600-16 and 650-16 gives buyers more styling latitude, but event standards and market-specific expectations can differ on what looks most authentic. If originality matters, use the sidewall style as part of the restoration decision rather than treating it as a purely cosmetic afterthought.

Several brands serve the 1958 Maserati range, but they are spread by size. Deka appears in 525-16, BFGoodrich, Coker Classic, Avon, and Firestone appear in 600-16, Michelin, Avon, and Vredestein appear in 185R16, and BFGoodrich, Coker Classic, Firestone, and Garfield appear in 650-16. That mix means brand choice depends first on the model and size rather than on the make alone.

A buyer comparing brands should narrow the search by size before making any brand judgment, because the 3500 radial options and the 300 or 450 bias-ply options are not interchangeable decisions. Sidewall style and speed rating also vary by size and by brand, especially in 600-16 and 185R16. Once the correct size is established, brand choice becomes much easier to compare in terms of appearance, construction, and intended use.

Rim width recommendations for 1958 Maserati tires vary by size. The 525-16 size is listed for 4.00 to 4.25-inch rims, 600-16 is listed for 4.00 to 4.50-inch rims, 185R16 appears with ranges from 4.50 to 6.00 inches on one product and 5.0 to 6.5 inches on another, and 650-16 is commonly listed for 4.50 to 5.00-inch rims. Every listed size uses a 16-inch rim diameter.

That spread is why wheel width should be verified before any tire is selected, especially on a collector car that may have had wheels changed during its life. A 16-inch diameter match alone is not enough. If your 1958 Maserati sits near the edge of a listed width range, it is smart to compare the exact tire’s published wheel recommendation before final fitment rather than assuming every product in the same nominal size behaves the same way.

Inner-tube requirements on 1958 Maserati tires depend on the size and the exact product. The 185R16 group includes at least one clearly marked tube-type radial, while other 185R16 products are not marked the same way, so tube status varies by product in that size. The other listed sizes do not show mixed tube markings here, which makes the individual sidewall specification especially important when comparing 185R16 choices.

For a buyer, that means tube fitment should never be assumed from the vehicle year alone. Wheel design, valve-stem condition, and the tire’s own construction all matter, particularly on vintage European rims. Before mounting tires on a 1958 Maserati, check the exact tire marking and confirm whether the wheel is appropriate for tube-type, tubeless, or either arrangement rather than relying on a broad rule for all 16-inch fitments.

All listed 1958 Maserati tire sizes use a 16-inch rim diameter, so wheel diameter compatibility is consistent across the lineup. That does not mean every original 1958 Maserati wheel can automatically accept every listed size, because the width requirements differ between 525-16, 600-16, 185R16, and 650-16. The shared diameter is helpful, but width remains the deciding fitment detail.

In practice, owners should treat 16-inch diameter as only the first checkpoint. A narrower wheel that works with 525-16 or 600-16 may not be the right match for every 185R16 radial, and a wheel intended for 650-16 fitment has its own width expectations. If the car still carries its original wheels, measure them or confirm their width before moving between tire types or sizes that share the same nominal diameter.

A stored 1958 Maserati should be kept in a cool, dry space away from direct sunlight, electric motors, battery chargers, furnaces, and other ozone-producing equipment that can age rubber prematurely. Bias-ply tires, which appear in 525-16, 600-16, and 650-16 fitments, are especially prone to flat-spotting during long static storage, while radial fitments like 175R16 and 185R16 generally recover differently after sitting. Clean floors, stable temperature, and proper inflation all help preserve the tire casing.

If the car will sit for months, move it periodically or support it in a way that reduces constant loading on one contact patch. Collectors often pay close attention to paint and upholstery while overlooking tire aging, but sidewalls and internal structure matter just as much on a seldom-driven car. A storage routine that protects the tires will make the car more pleasant to recommission and reduces surprises when it is time to drive again.

Tires on a 1958 Maserati usually age out before they wear out, especially on collector cars that see occasional use. A sensible rule is to begin evaluating them closely around five to seven years of age and to treat roughly ten years as the point where replacement deserves serious consideration regardless of tread depth. The tire’s date code, overall condition, storage history, and whether it has spent long periods underinflated all matter more than mileage alone.

That is particularly true for vintage-fitment tires because many collector cars accumulate very little annual mileage while still experiencing rubber hardening, sidewall checking, or internal aging. A bias-ply set that looks visually acceptable can still be old enough to deserve replacement, and a radial is not exempt from calendar aging either. When in doubt, use age and condition together rather than tread depth by itself as the deciding measure.

Tires on a 1958 Maserati should be inspected before every drive and again before any extended outing. Look for sidewall cracking, cuts, bulges, irregular wear, pressure loss, and signs that the car has been sitting on low air. On any fitment using tube-type construction, the condition of the valve stem and the tire’s ability to hold pressure steadily deserve extra attention.

A quick walkaround is not enough for a low-use collector car that may spend long stretches parked between drives. Vintage suspensions and steering systems can hide tire issues until the car is moving at speed, so an owner should physically inspect all four corners and the spare. Regular checks also make it easier to catch alignment or storage-related problems early, before they turn into a ruined casing or a roadside interruption.

For a 1958 Maserati 3500, the period-correct starting point is bias-ply construction, represented here by the 650-16 size. A 185R16 radial also exists in the fitment landscape for the model, but if the goal is originality in a late-1950s grand touring Maserati, the bias-ply route is the one most consistent with the era. The tires mount on 16-inch wheels, and sidewall appearance in 650-16 can be selected in either blackwall or wide whitewall form.

Original-equipment details could still vary by market, coachwork, or how a particular car was delivered, so owners pursuing strict authenticity should compare the car against period photos, surviving examples, and marque-club guidance. The important point is that construction type is part of the authenticity equation, not just the nominal size. A 650-16 bias-ply fitment is the natural place to begin if the 3500 is being restored with originality as the priority.

Correct tire fitment matters on a 1958 Maserati because judges and knowledgeable enthusiasts often notice the overall tire profile, sidewall style, and whether the construction matches the era of the car. A radial where a period-style bias-ply appearance is expected, or a wide whitewall on a car typically associated with blackwalls, can change how authentic the car reads even before anyone studies finer details. Size also matters because the stance and proportions of a vintage Maserati are closely tied to tire choice.

For cars shown in concours or marque-specific events, treat tire selection as part of the restoration plan rather than a last-minute consumable purchase. Event standards can differ, so club judging manuals and recognized Maserati specialists are the best sources for what a particular class expects. Even when a car is not judged formally, getting the tire size and sidewall style right does a great deal to preserve the visual balance of a 1958 Italian performance car.

For the 1958 Maserati 3500 in 185R16, Michelin X Radial and Vredestein Sprint Classic differ in sidewall markings, rim-width range, and stated service details. The Michelin is listed as 185R16 92S TT, which identifies an S speed rating with a 112 mph ceiling and a tube-type marking, while the Vredestein is listed as 185VR16 93V, which identifies a V speed rating with a 149 mph ceiling. The Michelin shows a 4.50 to 6.00-inch rim range, while the Vredestein shows a 5.0 to 6.5-inch rim range.

Those differences make the comparison more than a simple brand preference. A buyer should consider wheel width, whether a tube-type setup is desired or already present, and how closely the tire’s speed and construction markings align with the intended use of the car. Both are blackwall radials, but the details on the sidewall and recommended wheel width can steer the choice in a very practical way for a 3500 owner.

1958 Maserati tires can be suitable for highway driving when the correct size, construction, condition, and speed rating are matched to the car and the way it is used. Among the listed products, 600-16 includes an H-rated example with a 130 mph ceiling, while 185R16 products include S-rated versions at 112 mph and V-rated versions at 149 mph. Those numbers are only part of the picture, because tire age, storage condition, inflation, and the mechanical state of the car matter just as much.

A vintage Maserati’s brakes, steering, suspension, and alignment often become the more important limits at ordinary road speeds than the headline speed capability printed on the tire. Highway use should be approached with a fully inspected car, especially if it still runs older bias-ply construction or has been inactive for long periods. The right question is not only whether the tire can handle highway speed, but whether the entire 1958 Maserati is ready to do so safely.

Inflation pressure on 1958 Maserati tires should follow the vehicle’s factory guidance first, then be checked against the tire maker’s published limits for the exact size and product. Several listed tires include maximum load and pressure figures rather than a recommended running pressure: 525-16 shows 902 pounds at 30 psi, 600-16 commonly shows 1,400 pounds at 32 psi, 650-16 commonly shows 1,580 pounds at 32 psi, and one 185R16 example shows 1,433 pounds at 51 psi. Those figures are service limits, not a universal setting for every car.

The important distinction is that a maximum pressure marking should not be transferred directly into an operating recommendation without considering the car’s weight, balance, and intended ride quality. A 3500 on 185R16 radials and a 200 on 525-16 bias-ply tires are not the same inflation conversation. Use the exact tire size and model as the basis for the final setting, and avoid carrying numbers from one Maserati fitment over to another.

Before a longer drive in a 1958 Maserati, inspect each tire for cracking, cuts, bulges, unusual wear, and proper inflation, and make sure the spare is usable and aired correctly. If the car runs a tube-type fitment, pay close attention to valve stems and any sign of slow leakage. It is also worth checking that the tires are evenly seated and that no old flat spots or vibration issues remain after the car has been driven out of storage.

A longer outing in a vintage Italian car should always include a broader mechanical review beyond the tires, but the tires are where age-related risk often shows first. Roadside trouble on a collector car is frequently the result of deferred inspection rather than dramatic tread wear. A careful pre-drive look can catch the small warning signs that matter most on a car whose tires may have aged more from time and storage than from actual miles.