Packard Model K Tires

Packard Model K belongs to the earliest Brass Era of American motoring, when luxury cars were still close to the carriage tradition and tire technology was changing quickly from one design generation to the next. Built for 1903, Packard Model K came from a period when ride quality, appearance, and road manners were shaped as much by tire construction as by the chassis itself. Tire selection is not completely straightforward because the listed size uses an antique measurement system in which the first number describes overall tire diameter rather than wheel diameter. Before choosing a tire for Packard Model K, the first thing to confirm is that the car is fitted with the correct 28-inch rim.

Packard Model K Tire Size Guide

36X41903

Packard Model K uses one distinct tire size across its 1903 production run: 36X4. This is an antique diameter-by-section size, so the 36 refers to the tire's overall outside diameter in inches and the 4 refers to nominal section width, while the actual rim diameter used by the available products is 28 inches. Available offerings in this size include Firestone, Diamond, BFGoodrich, and Universal Vintage Tire products in several period-style series and sidewall treatments. Because these are bias-ply Brass Era tires, a tube is required. One product in this size is listed as new-old-stock original period production, and one made-to-order option is also available.

Packard Model K Tires by Year

The year listing shows which tire size applies to each Packard Model K production year and is the quickest way to confirm whether your car stays on the single 1903 size. The leading number in the size code is the tire's outside diameter, not the wheel size, so the rim diameter must be matched separately. Packard Model K sits squarely in the Brass Era, making it wise to verify fitment against original vehicle literature or a knowledgeable Packard specialist.

Best Packard Model K Tires for Sale

Packard Model K tire offerings include 5 products across 4 brands in 36X4, with blackwall, all white, and wide whitewall styles represented. One product is listed as new-old-stock original period production, and NOS tires of significant age require specialist evaluation before use regardless of appearance.

36X4 Products

These are the available products for 36X4.

Brass Era

Firestone Non Skid | All Black | 36X4

Firestone - Firestone High Pressure

SidewallBlackwall
Rim Diameter28 in
Rim Width—
Weight28 lb
Max Load1050@60 psi
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Brass Era

Diamond | Smooth All White | 36x4

Diamond - Diamond Smooth Tread

SidewallAll White
Rim Diameter28 in
Rim Width—
Weight26 lb
Max Load—
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Brass Era

Goodrich Silvertown Cord | Whitewall | 36x4 | New Old Stock

BFGoodrich - Silvertown Cord

SidewallWide Whitewall
Rim Diameter28 in
Rim Width—
Weight26 lb
Max Load1000@60 psi
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Brass Era

Universal | All White | 36x4

Universal Vintage Tire - Universal Classic Bias Ply

SidewallAll White
Rim Diameter28 in
Rim Width—
Weight26 lb
Max Load—
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Made To Order

Universal | Blackwall | 36x4

Universal Vintage Tire

SidewallBlackwall
Rim Diameter—
Rim Width—
Weight26 lb
Max Load—
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Frequently Asked Questions

The FAQ below focuses on the details that matter most on Packard Model K, including how 36X4 sizing works, how to confirm the correct 28-inch rim, when tubes are required, and how to think about NOS and made-to-order tire options.

Size Basics & Fitment

Packard Model K uses one listed tire size: 36X4 for 1903. The available products for that size are built for a 28-inch rim, which is an important distinction because the antique size code itself does not state wheel diameter. All listed examples for Packard Model K are bias-ply Brass Era tires in that same 36X4 format.

That means the practical fitment check is less about choosing among several sizes and more about confirming that the car still carries the proper 28-inch wheels before selecting a tire. On an early collector car, wheel changes over the last century are always possible, so compare the tire marking, the wheel itself, and any period Packard reference material before making a final selection.

A 36X4 marking on a Packard Model K is an antique diameter-by-section size. The first number, 36, is the tire's approximate overall outside diameter in inches, not the wheel diameter. The second number, 4, is the nominal section width. For the available Packard Model K products in this size, the rim diameter is 28 inches.

That older sizing system catches many modern buyers because it does not read like later numeric, alphanumeric, or metric tire codes. When you see 36X4 on Packard Model K, think of it as a tall narrow Brass Era tire that fits a smaller wheel than the first number suggests. Matching the actual rim diameter is the key step before anything else.

Packard Model K uses a 28-inch rim with the listed 36X4 tire products. That dimension comes from the tire specifications rather than from the antique size code itself. Every listed 36X4 product for Packard Model K is associated with the same 28-inch rim diameter.

This is exactly why early tire fitment deserves a careful inspection of the wheel already on the car. A restorer can easily misread 36X4 as a 36-inch wheel size when it actually refers to tire diameter. Measure the wheel, inspect any existing markings, and confirm that the rim profile is appropriate for a tube-type bias-ply tire before moving ahead.

Packard Model K should be treated as a tube-type application with the listed 36X4 tires. The available products are bias-ply Brass Era tires in an antique size format, and that construction normally requires an inner tube. Nothing in the listed offerings indicates a modern tubeless design for this Packard Model K fitment.

For a Brass Era car, tube selection and rim condition matter almost as much as the tire itself. The wheel must be clean, sound, and suitable for tube use, and the flap or rim strip arrangement should also be correct where required. Early wheels and tires work as a system, so it is worth checking all related components together rather than treating the tire as a standalone part.

Buying the Right Tire

Packard Model K tires in 36X4 are available in Blackwall, All White, and Wide Whitewall styles. The listed products include blackwall choices from Firestone and Universal Vintage Tire, all white choices from Diamond and Universal Vintage Tire, and a wide whitewall BFGoodrich Silvertown Cord in new-old-stock form. Those options give a restorer more than one visual direction while staying within period-style tire construction.

The right sidewall style depends on whether the goal is formal show presentation, period touring appearance, or a closer match to how the car is being restored. Brass Era cars can look dramatically different with blackwall versus white sidewalls, so period photographs, marque references, and your restoration theme should guide the final choice rather than appearance alone.

Packard Model K tire offerings in 36X4 come from 4 brands: Firestone, Diamond, BFGoodrich, and Universal Vintage Tire. The listed series include Firestone High Pressure, Diamond Smooth Tread, Silvertown Cord, and Universal Classic Bias Ply. All are presented in period-style bias-ply construction appropriate to an early collector-car application.

Brand choice on a Brass Era car usually comes down to restoration priorities rather than broad differences in size compatibility, since the critical dimensions still need to match the same wheel. Some buyers focus on tread design or sidewall appearance, while others prefer a particular historic name. Once fitment is settled, visual correctness and intended use become the real deciding factors.

Made-to-order on a Packard Model K tire means the listed product is identified as a made-to-order offering rather than a standard catalog tire in the usual sense. In the current 36X4 selection, one Universal Vintage Tire blackwall product carries that attribute. The rest of the Packard Model K offerings are listed under Brass Era rather than made-to-order.

For the buyer, that mainly means the product should be viewed as a specialty tire built around a low-volume vintage application. It is best to separate the fitment question from the product-availability question: first verify that 36X4 on a 28-inch rim is correct for your Packard Model K, then decide whether the made-to-order construction and appearance suit the restoration plan.

The Packard Model K listing includes one new-old-stock tire: a BFGoodrich Silvertown Cord 36X4 wide whitewall. New-old-stock means original period production rather than newly manufactured stock. Even when an NOS tire looks excellent, its age alone makes service condition a separate question from appearance or historical interest.

For many collectors, an NOS tire is most appealing as a display, concours, or authenticity piece rather than as a routine road-use tire. Any decision to mount and drive on one should follow a specialist inspection that considers age, storage history, casing condition, and intended use. Historical value and roadworthiness are not automatically the same thing.

Maintenance & Longevity

Packard Model K should be stored in a cool, dry, dark space with the tires protected from sunlight, ozone sources, and petroleum contamination. Keeping the car on clean flooring and away from electric motors, furnaces, and welding equipment helps reduce rubber aging. Brass Era bias-ply tires and tubes are especially sensitive to long idle periods and poor storage conditions.

If Packard Model K will sit for extended periods, move it occasionally or use methods that reduce prolonged flat spotting and casing stress. Maintaining appropriate inflation for storage, keeping the tires clean, and checking the wheels for rust or sharp edges are all worthwhile habits. Early collector tires last longest when the whole tire-and-wheel assembly is cared for as one unit.

Tires on a Packard Model K should be inspected before every drive and more thoroughly at regular intervals even if the car is used only occasionally. On an early brass car, inspection should cover sidewalls, tread surface, valve area, tube-related issues, wheel condition, and any signs of movement between tire and rim. A collector car that sees little mileage can still age significantly between outings.

Frequent visual checks matter because time, storage, and heat cycles often do more damage than distance on a low-use antique automobile. Any cracking, bulging, irregular wear, air loss, or unusual ride behavior should prompt a closer evaluation. With Packard Model K, cautious inspection is part of normal operation rather than an occasional maintenance task.

Packard Model K tires should be replaced when age, structural condition, cracking, hardening, deformation, or damage make continued use questionable, even if the tread still looks deep. Collector tires often age out long before they wear out. That is especially true for Brass Era applications and even more so for any new-old-stock tire, which requires expert evaluation because age is built into the product.

Tread depth alone is a poor guide on a low-mileage antique car. The better standard is the overall health of the casing, tube system, and wheel interface, along with the type of driving planned. If the car is going to be toured rather than displayed, replacement should be considered earlier and more conservatively than it would on a static showpiece.

Restoration & Authenticity

Packard Model K is represented here by 36X4 Brass Era tires on 28-inch rims, with available series including Firestone High Pressure, Diamond Smooth Tread, Silvertown Cord, and Universal Classic Bias Ply. Those series show that more than one period-style construction and appearance can be associated with this size. A specific original fit for an individual Packard Model K should be confirmed against Packard literature, period photographs, or marque research.

That matters because an early restoration may aim for strict factory-era authenticity, later-in-service appearance, or a practical touring presentation that still looks correct. The tire size itself is the first threshold, but tread pattern, sidewall style, and construction family also shape authenticity. On a Brass Era Packard, small visual differences have an outsized effect on the finished car.

Correct tire fitment can absolutely affect both presentation and judging on a Packard Model K. On a high-visibility Brass Era automobile, tire diameter, width, sidewall treatment, and period-appropriate construction all influence whether the car looks convincingly right. Judges and informed collectors often notice tires immediately because they alter stance and authenticity in a very obvious way.

For that reason, restorers usually treat tires as part of the car's historical finish rather than as generic service items. A Packard Model K prepared for events or formal display should be compared with accepted marque standards, period images, and club guidance before the final tire style is chosen. Getting the details right supports both visual credibility and collector confidence.

Packard Model K tire choices in 36X4 include blackwall, all white, and wide whitewall sidewall styles. Any of those may suit a period-themed restoration depending on the look being pursued, since Brass Era presentation could vary widely. The listed options provide both restrained and highly formal visual treatments without stepping outside early-style bias-ply construction.

The most correct choice depends on whether the restoration is being built around factory-era appearance, a later period-in-use look, or a judged-show interpretation. Sidewall color changes the entire impression of a brass car, especially on a large-diameter tire. Use period photographs and Packard-specific references to settle the sidewall style after the core fitment has been confirmed.

Safety & Road Use

Packard Model K tires can be suitable for limited road movement when they are correctly fitted, properly inflated, and in sound condition, but a 1903 Brass Era automobile demands a much more conservative standard than a later classic car. Tire condition is only one part of the picture. Wheel integrity, steering play, braking capability, tube condition, and the overall mechanical state of the car all matter before any road use.

In practice, Packard Model K should be approached as a low-speed antique intended for careful, short-distance driving rather than modern traffic use. A specialist mechanical review is wise before regular operation, especially if the car is newly restored or recently acquired. Public-road use should match the capabilities of both the tires and the rest of the vehicle.

Before driving a Packard Model K, check tire inflation, visible sidewall condition, tread surface, valve security, and any sign that the tire has shifted on the rim. Also inspect the wheel and tube-related hardware, since an early tire system depends on more than the outer casing alone. On a Brass Era Packard, basic mechanical checks should include steering, brakes, hubs, and wheel fasteners as well.

A short pre-drive routine helps catch the kinds of issues that matter most on a low-use antique car. If the car has been parked for a long period, treat the first outing as a recommissioning exercise rather than a casual drive. Starting slowly and reassessing after a brief roll is a sound habit with Packard Model K.

Packard Model K should be driven at very modest speeds on period-style tires, with the car treated as a true Brass Era machine rather than a later touring classic. These tall, narrow bias-ply tires are part of a much earlier motoring system with different handling, braking, and stability limits than modern drivers are used to. Even when everything is properly fitted, the vehicle's age sets the pace.

Parade speeds, demonstration runs, and short secondary-road movement are far more appropriate than sustained fast-road use. The safest mindset is to drive Packard Model K only as quickly as road conditions, visibility, traffic, and the car's own controls comfortably allow, with a strong margin in reserve. Smooth inputs and low speed are central to responsible operation.