Davis 93 Series Tires

The Davis 93 Series is associated with two tire sizes for 1926: 30X5.77 and 30X5. Both are antique diameter-by-section sizes rather than modern wheel-first sizes. The available replacement products tied to this application are in the 30X5 family and use a 20-inch rim, so the wheel diameter should be treated as a separate measurement from the tire code itself.

That means a Davis 93 Series owner should confirm both the size marking and the wheel before choosing a tire. On an antique application like this, the year alone is not enough. Check the existing rim, compare the wheel diameter to the tire specifications, and use period vehicle records or marque knowledge to decide whether your car belongs on 30X5 or the alternate 30X5.77 listing.

On a Davis 93 Series, 30X5 is an antique tire size where the first number refers to the tire's approximate outside diameter and the second number refers to section width. It does not mean the car uses a 30-inch wheel. The available 30X5 products for Davis 93 Series are built for a 20-inch rim, which is why antique size codes often need a second look from modern buyers.

That distinction matters because a buyer can easily mistake the first number for wheel diameter and end up looking at the wrong fitment entirely. With a Davis 93 Series, use the 30X5 marking as part of the identification process, then confirm that the wheel is the proper 20-inch rim and that the tire profile matches the style of period bias-ply construction used on the car.

A 1926 Davis 93 Series can show both 30X5.77 and 30X5 because more than one size is associated with that single model year. Both sizes belong to the same early sizing era, but they are not written in a way that immediately reveals whether they are interchangeable on a given car. The difference means the specific wheel and original fitment history of the individual Davis 93 Series matters.

That is why the safest approach is to identify the actual tire size used on your car rather than choosing only by model year. Inspect any surviving tire markings, measure the wheel, and compare those findings with original records if available. On a short-run pre-war car like the Davis 93 Series, small variations can matter more than owners expect.

The available Davis 93 Series replacement products in the listed 30X5 application use a 20-inch rim. With antique sizes such as 30X5 and 30X5.77, the rim diameter is not the leading number in the size code, so it has to be confirmed separately. That is a normal characteristic of pre-war tire sizing and one of the main reasons these cars require more careful fitment work.

For practical purposes, start by checking whether your Davis 93 Series still carries 20-inch wheels before comparing tread and sidewall choices. If your car has been altered over time, the wheel on the car today may not match what the size code suggests at first glance. Verifying the rim first prevents confusion later when selecting a proper antique-style replacement.

A 1926 Davis 93 Series should be confirmed by size marking and wheel measurement because two sizes are associated with that year: 30X5.77 and 30X5. The available replacement products shown here are tied to the 30X5 application and fit a 20-inch rim. That makes the wheel itself a critical part of identifying the right tire for an individual Davis 93 Series.

Start with the existing wheel diameter, then look for surviving tire markings, old service records, or restoration notes that identify whether your Davis 93 Series used 30X5 or 30X5.77. If the car has been apart for many years, compare the rim width and overall proportions to period references. On a niche 1920s car, careful confirmation usually matters more than quick visual comparison.

The available Davis 93 Series products include both blackwall and wide whitewall sidewall styles. The blackwall option appears on the Hartford Airplane 30x5, while the wide whitewall option appears on the Firestone 600-20 equivalent to 30x5. Both are bias-ply tires sized for a 20-inch rim in this application.

That gives a Davis 93 Series owner a choice between a more understated period look and a more decorative presentation. For a restoration-minded car, sidewall style should be chosen to match the era, the way the car is being presented, and any surviving historical reference material for that particular example. Sidewall appearance can change the visual character of a narrow-tired 1920s car more than many owners expect.

The available Davis 93 Series replacement products come from two brands: Hartford and Firestone. Hartford is represented by the Hartford Airplane 30x5, and Firestone is represented by a 600-20 tire cross-referenced to 30x5. Both options are bias-ply designs for a 20-inch rim.

Brand choice on a Davis 93 Series usually comes down to the balance between presentation, construction style, and the exact look you want on the finished car. Since this is an antique application, it is wise to compare not just the brand name but also the sidewall treatment and how the tire's proportions suit the wheel. A narrow pre-war car can look noticeably different depending on the tire selected.

A Davis 93 Series should be stored in a cool, dry, dark space away from direct sunlight, electric motors, ozone sources, and extreme temperature swings. Antique-style bias-ply tires are more sensitive to long periods of static load and environmental exposure than modern daily-driver tires. Clean floors, proper inflation, and avoidance of petroleum contamination all help preserve the casing and sidewall.

If a Davis 93 Series will sit for extended periods, move the car occasionally or support it in a way that reduces flat-spotting and prolonged stress on one section of the tire. Inspect the tubes and valve stems as part of that routine, not just the outer casing. Collector cars age their tires by time and storage conditions as much as by mileage.

Tires on a Davis 93 Series should be visually inspected before each drive and given a more thorough inspection at regular service intervals, even if the car sees only light seasonal use. On a pre-war bias-ply application, the key concerns are sidewall cracking, tread separation, casing distortion, valve condition, and any evidence of tube-related issues. Low annual mileage does not remove the need for frequent checks.

A careful walkaround of a Davis 93 Series should include inflation pressure, bead area condition, and signs that the tire is not sitting evenly on the rim. If the car has been parked for months, inspect again before moving it at road speed. Antique tires can deteriorate quietly, so routine checks are one of the simplest ways to avoid avoidable failures.

A Davis 93 Series tire should be replaced when age, cracking, hardening, deformation, impact damage, or casing weakness appears, even if the tread still looks usable. Collector tires often age out before they wear out, especially on cars that spend much of their life indoors or at low mileage. The visible tread surface is only one part of the tire's condition.

For a Davis 93 Series, replacement decisions should be conservative because the car depends on narrow, antique-style bias-ply construction and tube-type fitment. If there is any question about age-related integrity, have the tire evaluated by a specialist familiar with pre-war collector vehicles. Waiting for obvious tread wear is not the right standard on a car from this era.

The Davis 93 Series is associated here with two period-style sizes for 1926: 30X5.77 and 30X5. The available replacement products for the supported 30X5 application are bias-ply tires, with series names including Hartford Aero and Firestone Classic Bias Ply. That establishes the type of sizing and construction family used on the car, even though individual surviving cars may require closer confirmation.

For restoration work, the important point is to match the Davis 93 Series to the correct size and visual style rather than assuming one universal original tire across every example. Use surviving wheel and tire evidence, factory literature if available, and marque research to settle the exact application for your car. Early specialty cars often reward that extra level of verification.

Correct tire fitment can absolutely affect how a Davis 93 Series is judged and perceived, because tire diameter, width, sidewall treatment, and overall stance are highly visible on a 1920s car. A Davis 93 Series fitted with the wrong proportions can look noticeably out of character even to a casual observer. On uncommon collector cars, those details often matter more than owners realize.

For a restoration-minded Davis 93 Series, proper size confirmation and era-appropriate appearance help preserve the car's historical presentation and can support stronger show results. Judges and knowledgeable enthusiasts often pay close attention to tires because they influence both authenticity and silhouette. Marque clubs, period photographs, and original literature remain the best references when the car's history is unclear.

Davis 93 Series replacement choices here include both blackwall and wide whitewall sidewall styles. Either can significantly change the finished look of the car, especially with narrow, tall 20-inch-rim tires typical of the period. Since the available products are both bias-ply, the decision is mainly about historical appearance rather than a change in fundamental tire type.

For a Davis 93 Series restoration, the right sidewall style should follow the presentation goal for the individual car. A blackwall generally gives a more restrained period look, while a wide whitewall creates a more dressed, visually prominent appearance. If you are restoring for judging or strict authenticity, compare your intended choice against period images and any surviving evidence from the car itself.

A properly fitted, correctly maintained tire can make a Davis 93 Series roadworthy for careful collector use, but safety depends on far more than tread alone. Wheel condition, tube condition, inflation, brake performance, steering integrity, and the overall mechanical state of the car all matter on a pre-war application. A Davis 93 Series should be treated as an antique automobile, not as modern traffic equipment.

That means public-road use in a Davis 93 Series should be conservative, planned, and limited to conditions that suit the car's age and design. Before regular driving, have the complete chassis and tire setup reviewed by someone experienced with pre-war vehicles. Tire choice is only one part of making an antique car safely usable.

Before driving a Davis 93 Series, inspect tire inflation, sidewall condition, valve stems, wheel security, and any signs that the tire is shifting or not seated correctly on the rim. On a tube-type bias-ply application, small issues can become larger problems quickly if they are ignored. A visual and hands-on check is especially important after the car has been stored.

A sensible pre-drive routine for a Davis 93 Series also includes confirming steering response, brake feel, and whether the tires show any fresh cracking or distortion after sitting. Keep distances short until the car proves stable and predictable. Antique cars reward slow, methodical preparation far more than spontaneous road use.

A Davis 93 Series should be driven at modest, conservative speeds consistent with antique-car use and the condition of its tires, wheels, and running gear. Even when a period-style replacement tire is correctly fitted, the overall vehicle remains a 1920s machine with braking, steering, and chassis behavior far removed from modern standards. The practical limit is often the car, not just the tire.

For road use, think in terms of smooth local driving, careful route selection, and avoiding situations that demand abrupt braking or sustained high-speed travel. If the Davis 93 Series is used mainly for shows, tours, or parade duty, that is generally the right mindset. The goal is controlled, respectful operation that suits the age of both the car and its tire design.