28X2.5 Tire Size Guide

The 28X2.5 size uses an early diameter-by-width format. In this code, 28 refers to the tire's overall diameter in inches, while 2.5 refers to the section width in inches, giving the tire a tall and narrow antique profile typical of brass-era and prewar applications.

Unlike a modern P-metric size, the 28X2.5 code does not directly spell out an aspect ratio, load index, or speed rating. Buyers reading this format should think in terms of outside height, narrow section width, wheel fit, and period-correct construction rather than modern passenger-car sizing conventions.

The 28X2.5 tire fits a 23-inch wheel, which is 584.20 millimeters in diameter. On this style of antique size, the leading 28 refers to the tire's outside diameter, not the wheel diameter, so the actual rim size must be confirmed separately.

Wheel width matters too. The available tire in this size uses a 1.63-inch rim width, and antique wheel systems can vary more than later designs. Before choosing the 28X2.5, confirm the wheel's actual dimensions and bead configuration so the tire seats correctly and maintains the intended profile.

The 28X2.5 tire is 2.50 inches wide at its section width, which converts to 63.50 millimeters. Section width measures the tire at its widest point from sidewall to sidewall when mounted and inflated, not across the tread face on the ground.

Clearance planning should be based on section width rather than tread width because the sidewall bulge is what usually gets closest to fenders, suspension pieces, and brake hardware. On a narrow antique tire like the 28X2.5, that measurement also helps preserve the correct visual proportion on an early car.

The 28X2.5 tire has an overall diameter of 28.00 inches, or 711.20 millimeters. That outside height is a core part of how this size is identified and is one of the most important numbers to compare when evaluating a substitute.

Overall diameter affects ride height, wheel-opening fill, and gearing feel at road speed. On antique vehicles, it also shapes the visual balance of the car, so a replacement that is noticeably taller or shorter can change both stance and how authentic the finished restoration looks.

The 28X2.5 tire actually mounts on a 23-inch wheel. This separate wheel-size check is especially important because the 28 in the size code describes the tire's outside diameter rather than the rim diameter.

Confusion between outside tire diameter and wheel diameter is common with antique inch sizing. A buyer comparing early sizes should confirm both numbers every time, since a tire with the right overall height still will not mount if the wheel diameter or bead system differs from the tire's design.

The 28X2.5 tire turns about 720.3 revolutions per mile. That figure comes from the tire's 87.96-inch circumference and gives a useful picture of how often the tire rotates at a given road speed.

Revolutions per mile matter when comparing one size against another because a meaningful change can affect speedometer and odometer readings. On an antique vehicle, the number also helps show whether a substitute keeps the car close to its original rolling height and road-speed character.

The 28X2.5 is closely tied to brass-era and prewar automotive use, and its bias-ply construction suits the character of many antique restorations. Its tall, narrow shape matches the look buyers usually want when they are trying to preserve early vehicle proportions rather than update them to a later style.

Originality still depends on the specific vehicle, wheel type, and restoration goal. A car being judged on authenticity may require careful comparison against factory literature, surviving originals, and wheel details. Restorers should confirm not only the size itself but also the correct wheel diameter, rim profile, and overall visual stance.

The key checks for the 28X2.5 are wheel diameter, wheel width, outside tire diameter, and physical clearance around the mounted assembly. This size has a 28.00-inch overall diameter, a 2.50-inch section width, and the available version mounts on a 23-inch wheel with a 1.63-inch rim width.

Clearance should be checked at the fender edge, steering stops, suspension travel points, and brake components. Antique vehicles often have less standardized wheel and tire systems than later cars, so buyers should measure the actual wheel and inspect the car rather than relying on size code similarity alone.

Yes, the 28X2.5 is commonly written as 28X25 or 28 2.5 in alternate catalog and search formats. Those variations usually refer to the same basic antique inch size even though the punctuation and spacing differ.

Even when the size notation matches, buyers should still confirm the actual wheel and tire system. Antique applications can involve clincher-style or other early wheel arrangements, so the printed size alone is not enough to confirm interchangeability without checking the tire design and wheel configuration.

The 28X2.5 uses bias-ply construction, so its driving feel is shaped more by vintage tire behavior than by modern radial expectations. Buyers can expect a period-style response with more sidewall influence, a narrower footprint, and steering feel that reflects the road manners of early automotive design.

Ride and handling also depend heavily on the vehicle itself. Suspension condition, steering geometry, wheel trueness, alignment, inflation, and tire age all influence how an antique car behaves. On an early chassis, the 28X2.5 is usually chosen to preserve original character rather than to mimic modern-road responses.

With a 28.00-inch overall diameter and about 720.3 revolutions per mile, the 28X2.5 has a direct effect on how an antique vehicle sits and how often the tire turns at speed. Those two numbers influence visual stance, wheel-opening fill, and the relationship between road speed and drivetrain speed.

A noticeably shorter substitute can lower the car and make the engine turn faster for a given road speed, while a taller substitute can do the opposite. Restorers and drivers alike should compare overall diameter first when considering another size, since it changes both appearance and operating character.

The 28X2.5 can be used on the road when the tire, wheel, and vehicle are all in proper condition, but buyers should approach it as an antique fitment rather than a modern all-purpose tire choice. Its bias-ply construction and early sizing place it firmly in the context of vintage vehicle use.

Road behavior depends on more than size alone. Before driving any distance, inspect tire age and condition, confirm the wheel setup, and make sure the vehicle's steering, brakes, and suspension are sorted. Antique cars ask more from the whole system, so the tire should be evaluated as one part of that package.

The 28X2.5 is available from Coker Classic. For an antique size like this, the brand question usually matters less than whether the tire matches the wheel system, construction style, and visual character needed for an early vehicle.

Buyers should still evaluate quality in practical terms. Check that the tire's construction matches the restoration goal, that the wheel fit is correct for the specific assembly, and that all tires on the vehicle are consistent in size and style. Matching the full set is especially important on early cars where proportions are very visible.

A quality 28X2.5 tire should first match the intended use of the vehicle: correct overall dimensions, correct wheel compatibility, and bias-ply construction that suits an antique application. On an early size like this, dimensional accuracy and proper fit matter at least as much as brand name recognition.

Construction consistency across the full set is also important. Buyers should compare overall diameter, section width, casing style, and visual finish so the car sits evenly and retains a uniform appearance. On a restoration, small differences from one tire to another can stand out more than they do on a modern driver.

Yes, sidewall appearance can matter a great deal on the 28X2.5 because early vehicles put a lot of the tire in plain view. The available example in this size uses an all-white sidewall, which makes the tire a major visual element rather than a background detail.

Appearance should be chosen with the car's trim level, restoration style, and historical look in mind. A sidewall treatment that suits one build may look out of place on another, so buyers should consider whether they want a tire that blends in quietly or one that becomes part of the car's period presentation.

The 28X2.5 should be stored the same way other collector tires are stored: away from direct sunlight, heat, moisture, and ozone-producing equipment. Long parked periods are common with antique vehicles, and low mileage does not prevent tire aging in the sidewall, casing, or bead area.

Seasonal inspection matters just as much as storage environment. Before returning the car to the road, check for cracking, flat spotting, bulges, cuts, and any sign that the tire has lost shape. Early vehicles often spend months at rest, so a visual and hands-on inspection should be routine before each driving season.

The 28X2.5 is commonly a tube-type fitment and is often set up with a tube. Even so, tube use is ultimately a wheel-and-tire-system question rather than a size question, so the final decision should be confirmed against the actual wheel and tire being used.

Early rims and antique tire constructions vary more than later passenger-car systems. When replacing an old assembly, inspect the wheel condition, confirm the intended mounting style, and follow the tire manufacturer's guidance. A tube that is correct for one wheel arrangement may not be the right answer for another.

The 28X2.5 should be inspected regularly even when tread wear looks minimal. Antique tires can age out from time, storage conditions, heat, sunlight, ozone exposure, and long periods of inactivity long before they appear worn in the modern everyday-driver sense.

Look closely for cracking, hardening, sidewall damage, air loss, and changes in shape. Owners who drive only occasionally should still inspect before every outing and before any longer run. On a collector vehicle, age and condition are often more important replacement signals than remaining tread depth alone.

Buyers should verify the tire's condition, the wheel's actual diameter and width, and the full vehicle setup before using the 28X2.5 on modern roads. This is an antique bias-ply size, so roadworthiness depends on the condition of the complete wheel-and-tire assembly rather than on size markings alone.

Pre-drive checks should include cracking, bulges, bead condition, air retention, and any evidence of casing damage. On an early vehicle, steering, suspension, and brake condition matter just as much. A careful inspection routine helps reduce surprises when an antique car is driven beyond short local use.

The 28X2.5 should be replaced when age, cracking, damage, repeated air loss, casing distortion, or other condition issues make the tire questionable, even if tread remains. Collector and antique tires do not stay serviceable forever just because they see limited mileage.

Replacement timing should be based on condition and intended use, especially before tours, events, or longer road miles. If there is any doubt about the tire, tube setup, or wheel compatibility, have the assembly inspected by a qualified tire professional familiar with vintage and early vehicle applications.

Yes, the 28X2.5 deserves extra attention because it commonly uses a tube and fits an early-style wheel system. Tube use should be confirmed from the actual tire and wheel combination, and the wheel itself should be inspected carefully for condition, fit, and compatibility before the tire is put into service.

Mounting an antique tire on the wrong wheel profile or using a worn wheel can create problems even when the printed size appears correct. Buyers should review the tire's current sidewall markings, inspect the rim closely, and consult a qualified tire professional whenever the wheel setup is uncertain.