The 1958 Alfa Romeo 1900 came from an important period when Alfa Romeo was building fast, refined road cars with genuine touring character and advanced engineering for the era. Today, that makes the 1900 especially appealing to collectors who want a European sedan with real mechanical personality rather than a purely ornamental classic. Tire selection centers on one primary fitment, the 165R400 radial, a millimetric size that reflects the car’s period wheel standard. Available choices include traditional blackwall and narrow whitewall presentations within the Michelin X radial family. For restoration-minded road use, the key is matching the correct millimetric fitment to the car’s wheels and intended appearance.
Which Tire Size Is Right for The 1958 Alfa Romeo 1900
The 1958 Alfa Romeo 1900 uses one primary tire size: 165R400, a radial fitment built for a 400mm wheel rather than a conventional inch-based rim. The 1900 Super uses this same size, so the main decision is not which primary size fits, but which version of 165R400 best suits the car’s appearance, wheel setup, and driving plans.
165R400 is a millimetric radial size in which 165 refers to nominal section width in millimeters, R identifies radial construction, and 400 designates a 400mm rim diameter. That millimetric wheel standard is a defining part of the fitment, so it should be treated differently from more familiar 15-inch or 16-inch classic sizes. In this size, Michelin options include both blackwall and narrow whitewall treatments within the Michelin X radial family. It is the right place to stay if preserving the 1900’s original-style wheel format matters and the car still carries the correct millimetric rims.
Sub-model fitment is straightforward here because the covered 1900 Super uses the same primary tire size as the 1958 Alfa Romeo 1900 core fitment. Checking the exact sub-model still matters because this car uses a millimetric wheel standard, and wheel confirmation should come before any tire purchase.
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1958 Alfa Romeo 1900 Super
The 1958 Alfa Romeo 1900 Super uses the same 165R400 radial fitment, so tire selection stays centered on the correct millimetric size rather than a different primary option. That means the real choice is between available sidewall presentations and rim-width compatibility within the 165R400 offerings.
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 1958 Alfa Romeo 1900 Tires for Sale
Available 165R400 choices center on Michelin radial construction, with both blackwall and narrow whitewall presentations. The product grid is most useful for comparing tire series details, rim-width compatibility, and how each version supports either a more understated or more restoration-oriented look.
These FAQs for the 1958 Alfa Romeo 1900 focus on the 165R400 millimetric radial fitment, 400mm wheel compatibility, sidewall and product choices, and the checks worth making before putting a collector car back on the road.
Tire Size & Fitment
What tire size fits a 1958 Alfa Romeo 1900?
The 1958 Alfa Romeo 1900 uses a 165R400 radial tire. This is a millimetric fitment, which means the wheel diameter is 400mm rather than a more familiar inch-based classic rim size.
That distinction matters because a 400mm wheel should not be treated as interchangeable with a 15-inch wheel just because the sizes seem close at a glance. Tire selection starts with confirming that the car still has the correct millimetric rims, then choosing the 165R400 version that best matches the car’s intended appearance and wheel-width requirements.
What size rim does a 1958 Alfa Romeo 1900 use?
The primary tire size for the 1958 Alfa Romeo 1900 is built for a 400mm rim. In practical terms, that means the car uses a millimetric wheel standard rather than a conventional inch-diameter rim.
Checking the actual wheels on the car is especially important on older European vehicles because wheel changes may have happened over the decades. Looking at the wheel stampings, measuring carefully, and comparing the wheel width to the tire’s accepted rim-width range will help avoid choosing a tire that matches the car in style but not in wheel fitment.
Does the 1958 Alfa Romeo 1900 Super use the same tire size?
Yes. The 1958 Alfa Romeo 1900 Super uses the same 165R400 radial tire size. That keeps fitment simple across the covered sub-model and keeps the buyer focused on product choice rather than sorting through multiple primary sizes.
Even with shared fitment, the wheel setup should still be checked before purchase because collector cars are often altered over time. Once the 400mm wheel diameter is confirmed, the decision becomes more about sidewall appearance, rim-width compatibility, and whether the car is being finished for touring use or a more restoration-oriented presentation.
Choosing the Right Tire
What should I consider when choosing a 165R400 tire for a 1958 Alfa Romeo 1900?
Start with the basics: the 1958 Alfa Romeo 1900 uses a 165R400 radial on a 400mm rim, so the tire has to match that millimetric wheel format. From there, compare sidewall style, tire weight, and the accepted rim-width range for the specific product.
A narrow whitewall can support a more formal period-style presentation, while a blackwall gives the car a plainer and more understated look. Wheel width matters too, since one 165R400 option suits a narrower range and another covers a wider spread, so checking the actual wheels on the car is part of choosing the right version.
What sidewall styles are available for 1958 Alfa Romeo 1900 tires?
The available 165R400 tires for the 1958 Alfa Romeo 1900 come in blackwall and narrow whitewall styles. Both are radial tires, so the main visual difference is the sidewall presentation rather than a change in basic construction.
That choice affects how the car reads visually once it is on the ground. A blackwall tends to look simpler and more utilitarian, while a narrow whitewall adds a more dressed, period-style accent, so the better option depends on whether the car is being finished for understated road use or a more restoration-focused appearance.
How do I choose between the available 165R400 tires for a 1958 Alfa Romeo 1900?
The main differences are sidewall style, rim-width compatibility, and product details within the Michelin radial lineup. One version is offered as a narrow whitewall, while another comes as a blackwall, and their accepted rim-width ranges are not the same.
Choosing between them starts with measuring the wheels already on the car and deciding how original-looking or understated the finished result should be. That approach is more useful than picking by appearance alone, especially on a 1958 Alfa Romeo 1900 where the correct millimetric wheel format is just as important as the tire size itself.
Restoration & Appearance
Which tire should I choose for a period-style 1958 Alfa Romeo 1900?
A period-style choice for a 1958 Alfa Romeo 1900 starts with staying in the correct 165R400 millimetric radial size. That preserves the original-style wheel format and keeps the car in the tire family that suits its late-1950s European character.
From there, the visual decision usually comes down to blackwall versus narrow whitewall. Buyers pursuing exact historical accuracy should compare the car’s surviving details, period photos, and marque-specific references before settling on appearance, since a correct size alone does not automatically answer every restoration question about sidewall treatment.
How does tire construction affect the appearance of a restored 1958 Alfa Romeo 1900?
On the 1958 Alfa Romeo 1900, construction is less of a bias-ply-versus-radial debate because the primary fitment is already a radial 165R400. The visual effect comes more from maintaining the proper millimetric sizing and choosing the sidewall style that best suits the car’s intended presentation.
A tire that keeps the correct 400mm wheel relationship helps the car sit and read like a proper period European touring sedan. Sidewall treatment then fine-tunes the look, with blackwall giving a simpler presentation and narrow whitewall adding a dressier accent without changing the car’s underlying fitment format.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1958 Alfa Romeo 1900?
Yes. Modifications can affect tire fitment on a 1958 Alfa Romeo 1900, especially if the car has received wheel changes, brake updates, suspension work, or a ride-height alteration over the years. Those changes matter even when the intended tire size remains 165R400.
A different wheel width or a non-original rim diameter can change what actually works on the car, and suspension or body changes can alter clearance at full steering lock or under compression. Looking over the wheel dimensions and checking for fender, steering, and chassis clearance is a smart step before mounting new tires.
What should I inspect before driving a 1958 Alfa Romeo 1900 on new tires?
Before driving a 1958 Alfa Romeo 1900 on new tires, inspect the wheels, valve stems, and the overall condition of the suspension and steering components. The wheels should be the correct 400mm type, clean at the bead area, and free from damage that could affect air retention or mounting quality.
It also helps to verify tire pressure, look for rubbing at full lock, and make sure the car tracks and brakes normally once the tires are installed. On a collector vehicle, a careful shakedown drive is worthwhile because long periods of storage can reveal unrelated issues only after the car returns to regular road use.
How should 165R400 tires on a collector 1958 Alfa Romeo 1900 be maintained?
165R400 tires on a collector 1958 Alfa Romeo 1900 should be checked regularly for air loss, tread wear, sidewall cracking, cuts, and any developing bulges. Even on a low-mileage car, age and storage conditions matter as much as miles traveled.
Keeping the car out of prolonged sunlight, excess heat, and ozone sources helps preserve tire condition during storage. It is also smart to inspect the tires before each drive rather than relying on appearance alone, since a collector car may spend long stretches parked and can develop issues that are easy to miss until the next road outing.
