1927 Pierce Arrow Tire Fitment Guide

1927 Pierce Arrow vehicles use two tire sizes: 33X6.75 and 700-21. Both sizes apply to the 1927 Pierce Arrow 36 Series and 80 Series, so there is no model split between those two lines. The 700-21 size mounts on a 21-inch rim, with available products covering rim widths from 3.00 to 4.00 inches depending on the specific tire. The 33X6.75 size belongs to the older diameter-by-section naming system rather than a modern wheel-diameter-first system.

That means a 1927 Pierce Arrow owner should confirm the wheel setup already on the car before choosing a tire. If your car is built around 21-inch rims, 700-21 is the direct path into available products and sidewall style choices. If the car is set up for 33X6.75, the key is staying within that antique-format fitment family rather than assuming a numeric size will interchange. On pre-war luxury cars, wheel and tire combinations were often preserved through decades of restoration work, so checking the actual rim and current tire markings is the best first step.

On a 1927 Pierce Arrow, 33X6.75 is an antique diameter-by-section size. The first number, 33, refers to the tire's overall diameter in inches, and the second number, 6.75, refers to the nominal section width. It is a bias-ply type size from the pre-war era, and it does not read like a later numeric or metric tire code. The format reflects how many earlier luxury and specialty cars identified tires before modern sizing conventions became standard.

For a collector-car owner, that code matters because it helps separate an authentic pre-war fitment from later replacement conventions. A 33X6.75 tire speaks the language of the period and usually appeals to owners trying to preserve a correct 1920s appearance. It also means you should not compare it casually to a modern metric size or assume the same wheel relationship as a 700-21 tire. When reviewing your car, use the sidewall marking and the actual wheel setup together rather than relying on a memory of the size alone.

On a 1927 Pierce Arrow, 700-21 is a numeric bias-ply tire size. The 7.00 portion indicates the nominal section width, while the 21 indicates the rim diameter in inches. This is still a period-appropriate pre-war sizing convention, but it is more familiar to many collectors because the wheel diameter is stated directly in the code. Available 700-21 tires for 1927 Pierce Arrow applications are all bias-ply products.

That direct 21-inch rim reference makes 700-21 especially useful when you are checking an existing wheel and tire assembly. On a large late-1920s Pierce Arrow, it also opens up visible choices in sidewall presentation, from Blackwall to Wide Whitewall and Double-Whitewall, depending on the look you want. The main takeaway is that 700-21 is not just a cosmetic variation of 33X6.75; it is a separate fitment path tied to a 21-inch rim. Confirm the wheel diameter before settling on the tire code.

Yes, the 1927 Pierce Arrow 36 Series and 80 Series share the same two tire sizes: 33X6.75 and 700-21. There is no split here where one model line requires one size and the other requires another. Both are bias-ply fitments, which matches what buyers expect for a luxury American car from the late 1920s. The real distinction is which wheel and tire combination your individual car carries today.

That shared fitment gives owners more flexibility when researching a restoration, because you do not need to start by separating 36 Series from 80 Series tire catalogs. Instead, the practical question is whether your Pierce Arrow is currently on a 21-inch rim setup or on the antique-format 33X6.75 arrangement. Once you know that, the next choices are much simpler: period style, sidewall appearance, and whether your restoration is aiming for a more formal blackwall presentation or a whitewall look that suits the body and era.

A 1927 Pierce Arrow owner should choose between 33X6.75 and 700-21 by confirming the wheel setup on the car first, because these sizes do not share the same stated rim relationship. Both are bias-ply, both fit the 36 Series and 80 Series, and both belong comfortably within a pre-war restoration mindset. The difference is not a radial-versus-bias decision; it is a question of matching the established tire system your car already uses.

If your Pierce Arrow has 21-inch rims, 700-21 is the straightforward fitment path and also gives you defined sidewall style choices in current offerings. If the car is built around a 33X6.75 setup, staying with that antique-format size preserves the period language and proportions associated with earlier tire conventions. Many cars from this era have passed through multiple restorations, so the safest approach is to verify the present wheels and sidewall markings before choosing a replacement plan.

For 1927 Pierce Arrow applications in 700-21, available sidewall styles include Blackwall, Wide Whitewall, and Double-Whitewall. Firestone offers the broadest visible range in this size, while Michelin's listed 700-21 option appears in Blackwall form. All of these are bias-ply tires, which keeps the overall construction appropriate to the period even when the sidewall presentation changes. Sidewall style is one of the biggest visual decisions on a pre-war luxury car because it affects the car's stance and formality.

Blackwalls usually suit owners who want a restrained, earlier-period appearance or a more formal carriage look. Whitewall choices add visual emphasis and can complement many restored late-1920s American luxury bodies, especially on cars built to make a strong road impression. Since both the 36 Series and 80 Series share these size options, the sidewall decision is more about the character of your restoration than about fitment. Match the sidewall style to the way the car will be presented at shows, tours, or club events.

Firestone and Michelin both make 700-21 tires for 1927 Pierce Arrow vehicles. Firestone appears in Balloon form, including Blackwall, Wide Whitewall, and Double-Whitewall variations, while Michelin appears in the Double Rivet series as a Blackwall bias-ply option. Both brands fit squarely within the vintage-tire world and are familiar names to collectors restoring large American classics. The brand mix here gives buyers more than one way to approach the look of the finished car.

A brand decision on a 1927 Pierce Arrow is usually tied to appearance, series character, and the exact wheel and sidewall presentation you want rather than to a dramatic change in tire type. Firestone's available whitewall options make it attractive for owners chasing a more decorative period look, while Michelin's blackwall offering may appeal to a different restoration style. Since all currently listed 700-21 products are bias-ply, the bigger technical checkpoint remains wheel compatibility and size selection before brand preference.

For 1927 Pierce Arrow vehicles using 700-21 tires, the available rim width ranges depend on the tire you choose. Michelin Double Rivet 700-21 fits rims from 3.00 to 3.75 inches, while Firestone Balloon 700-21 versions fit rims from 3.75 to 4.00 inches. All of those mount on 21-inch rims, but the acceptable width range changes by product. That is important on a heavy pre-war car because rim width influences how the tire sits and supports the vehicle.

A Pierce Arrow owner should treat rim width as a product-specific checkpoint, not just a size-level assumption. If your wheel falls near the lower or upper edge of the range, that can influence which 700-21 product is the better match. On restored cars, wheel substitutions made decades ago are not unusual, so measuring the actual rim before ordering is wise even if the sidewall size seems correct. Matching the rim width properly also helps preserve the intended shape and appearance of a tall bias-ply tire.

1927 Pierce Arrow tires sit firmly in the pre-war bias-ply world, and owners should pay close attention to the specific tire's sidewall marking and the wheel construction when planning a tube setup. The listed 700-21 products do not carry a TT or TL marker in the size description, so the practical approach is to confirm the exact tire and wheel combination before assembly. On cars from this era, tube use is often closely tied to the design of the original wheel rather than to modern passenger-car assumptions.

That matters because an otherwise correct vintage tire can still require a different installation plan depending on the wheel itself. If your Pierce Arrow retains original-style split or early detachable-rim hardware, inner-tube decisions should be made with the wheel design in mind, not by general habit. Confirm the tire's specific sidewall marking and inspect the wheel condition before mounting. It is also smart to include the spare in the same review so that your road setup remains consistent across all wheels.

A 1927 Pierce Arrow should not be assumed to use the same wheel for both 33X6.75 and 700-21 just because both sizes appear across the model range. The 700-21 size is explicitly tied to a 21-inch rim, while 33X6.75 belongs to an antique diameter-by-section system that is not interchangeable by name alone. Both sizes fit the same model families, but they are not simply alternate sidewall styles on one wheel diameter. Wheel compatibility must be confirmed on the car itself.

That is especially important on a nearly century-old luxury automobile, where wheels may have been changed during restoration or long-term ownership. If your car already wears one of these sizes, use the present wheel and sidewall markings as your guide rather than assuming a catalog crossover. When evaluating a switch from one size family to the other, verify the rim dimensions and hardware details first. Keeping the wheel and tire system matched correctly protects both the car's appearance and the practical integrity of the fitment.

A 1927 Pierce Arrow should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment. Bias-ply tires are especially prone to flat-spotting when a heavy car sits in one place for long periods, and a large pre-war luxury chassis places considerable static load on the tires. Clean floors, stable temperature, and protection from moisture all help preserve the casing and sidewalls. Proper inflation during storage also matters because underinflation can stress the tire while parked.

If the car will sit for an extended season, roll it periodically or use stands in a way that supports the vehicle correctly without creating suspension issues. Many owners of full-size classics also move the car just enough to change the contact patch every few weeks. Before returning the car to road use, inspect the sidewalls and tread for cracks or shape distortion and bring all tires back to the intended running pressure. Collector storage habits do more for longevity than low annual mileage alone.

Tires on a 1927 Pierce Arrow should be judged more by age and condition than by mileage. A collector tire often deserves close evaluation once it reaches the five-to-seven-year range, and around ten years is a common point where replacement should be strongly considered even if tread remains. That principle is especially relevant on pre-war cars, which may be driven only occasionally but still expose tires to time, heat cycles, and storage-related aging. The DOT date code or equivalent age marking is the starting point for that review.

A Pierce Arrow can cover very few miles and still need new tires if the sidewalls harden, crack, or lose resilience with age. Conversely, a newer tire that has been stored and maintained properly may be a better candidate for touring than an older one with attractive tread but deteriorated structure. Owners should build tire age into restoration planning rather than waiting for visible wear bars or obvious tread loss. On a substantial 1920s car, age-related caution is simply part of responsible operation.

Tires on a 1927 Pierce Arrow should be inspected before every drive and again before any extended outing or tour. Look for sidewall cracking, tread separation, cuts, bulges, uneven wear, and any sign that the tire is losing pressure between uses. Because vintage cars may sit for weeks at a time, the first inspection after storage is often more important than the miles driven afterward. If your wheel and tire setup uses tubes, include the valve stem area and pressure retention in that routine.

On a car of this age, tire inspection should also include the spare, since it may become your only roadside fallback during a tour. A quick walkaround before each drive can catch a soft tire, a damaged valve stem, or a casing issue before the weight of the car turns it into a larger problem. If anything changes in steering feel, ride height, or vibration, stop and inspect immediately rather than pushing on. Regular checks are a small habit that pays off significantly on pre-war equipment.

A 1927 Pierce Arrow 36 Series would have been fitted in the bias-ply era, and the sizes associated with the 1927 Pierce Arrow range are 33X6.75 and 700-21. Those two sizes also apply to the 80 Series, which reflects the shared tire fitment across the marque's model lines for that year. The key historical point is construction: a late-1920s Pierce Arrow belongs to the pre-radial world, so bias-ply is the expected type for authentic restoration work. Original-equipment branding can vary by market history and ownership records, so marque-specific confirmation is worthwhile.

For a restoration, that means your first authenticity check is size and construction, followed by the sidewall style that best matches the way your particular car is being presented. A formal sedan restored for a restrained period appearance may call for a different visual treatment than an open touring car or a car shown in a later interpretive style. If you want exact event-level accuracy, consult Pierce Arrow club resources, period photographs, and restoration records for your body style. Those sources can refine the final choice beyond the broad year-make fitment.

Correct tire fitment matters a great deal when showing a 1927 Pierce Arrow because judges and knowledgeable enthusiasts notice tire size, construction type, and sidewall presentation quickly. A late-1920s Pierce Arrow should wear period-appropriate bias-ply tires, and an obviously modern replacement approach would stand out against the car's original character. Even within period-style options, sidewall treatment can influence how authentic the finished restoration appears. On a prestige pre-war car, tires are a visible part of the overall restoration story rather than a minor accessory.

That does not mean every event expects the same exact appearance, since local judging standards and club traditions can differ. Some events reward strict factory-style presentation, while others allow more latitude for touring-oriented restorations as long as the result remains era-appropriate. The practical takeaway is to decide early whether your Pierce Arrow is being prepared for concours judging, club touring, or a mixed-use display role. Once that goal is clear, it becomes easier to choose the proper size family and the sidewall look that supports it.

For a 1927 Pierce Arrow in 700-21, Firestone Balloon and Michelin Double Rivet differ in sidewall offerings, rim width range, and listed load information. Firestone Balloon appears in Blackwall, Wide Whitewall, and Double-Whitewall versions, fits 3.75 to 4.00-inch rims, and carries a listed maximum load of 1930 pounds at 40 psi. Michelin Double Rivet appears as a Blackwall, fits 3.00 to 3.75-inch rims, and has a slightly lower listed product weight than the Firestone versions shown. Both are bias-ply choices suited to the era.

That means the decision is not just aesthetic, even though appearance plays a major role. If your wheels are on the narrower side of the 700-21 rim-width range, the Michelin fit window may align better, while Firestone offers broader sidewall-style variety for a more decorative presentation. A Pierce Arrow owner should compare the actual wheel width on the car before deciding which series is the better technical match. Once the wheel fit is confirmed, the sidewall look can become the finishing touch rather than the starting point.

1927 Pierce Arrow tires can be suitable for road use when they are in good condition, correctly fitted, and used within the expectations of a large pre-war bias-ply automobile. The listed 700-21 products shown here do not include speed-rating letters, so the right safety mindset is to drive the car in a manner consistent with its age, construction, and mechanical systems rather than to chase modern highway behavior. On a 1920s Pierce Arrow, braking, steering, suspension design, and overall vehicle mass are often more limiting than outright tire capability in normal use.

A sound tire is only one part of the equation on a pre-war touring car. Before planning sustained highway mileage, make sure the tires are fresh enough, properly inflated, and free from cracking or separation, and verify that the rest of the chassis is equally ready for speed and distance. If your driving will be mostly local events, tours, and secondary roads, period-style bias-ply tires usually align well with the car's intended character. Longer high-speed use calls for a more conservative, fully inspected approach.

Inflation pressure for 1927 Pierce Arrow tires should be matched to the exact tire size and the manufacturer's rating, then cross-checked against period vehicle guidance where available. For listed 700-21 Firestone Balloon products, the maximum load figure is 1930 pounds at 40 psi. That number is a tire rating reference, not a universal instruction to run every 1927 Pierce Arrow tire at the same pressure under all conditions. Pressure should never be transferred casually from one size family to another.

The practical approach is to begin with the correct size on the correct wheel, then consult the tire maker's specification and any surviving factory literature for the car. A heavy pre-war luxury car may respond noticeably to small pressure changes in ride and steering feel, but the first priority is staying within the tire's intended operating range. If your car uses a different size family or a different product line, confirm that tire's own pressure guidance separately. Consistency across all mounted tires matters as much as the actual number used.

Before taking a 1927 Pierce Arrow on a longer drive, inspect every tire for sidewall cracking, cuts, bulges, uneven wear, and proper inflation. Check the valve stems, make sure the spare is serviceable, and confirm that each tire is seated correctly on the wheel. On an older bias-ply car, even a small issue can become magnified once heat and road speed build over several miles. Tire readiness should be treated as part of a full pre-drive inspection rather than as a separate afterthought.

A Pierce Arrow heading out on tour also deserves the broader checks expected of a pre-war car: wheel security, brakes, steering play, fluid levels, cooling health, and the condition of the road tools and jack. Since these cars often see intermittent use, problems tend to come from age and inactivity more than from daily wear. If the tires have been sitting under load for a while, drive the first miles gently and stay alert for vibration or pull. A careful departure routine is one of the best ways to enjoy the car confidently.