825-16 Tire Size Guide

The 825-16 is a numeric tire size. In this code, 8.25 refers to the nominal section width in inches, and 16 refers to the wheel diameter in inches, so the tire is built for a 16-inch rim and has a nominal width of 8.25 inches.

Older numeric sizing differs from a modern P-metric code because it does not spell out the aspect ratio, construction, load index, or speed symbol in the size itself. Buyers looking at the 825-16 should read the complete sidewall and product specification, especially when comparing period-correct bias-ply tires with newer replacement options in other sizing systems.

The 825-16 fits a 16.0-inch wheel, which is 406.4 millimeters in diameter. That rim diameter is fixed, so a 825-16 tire must be mounted on a 16-inch wheel and cannot be stretched or adapted to a different bead-seat diameter.

Wheel width matters just as much as wheel diameter. In this size, the supported rim width range is 5.00 to 6.00 inches, which helps the tire maintain its intended profile and footprint. If the wheel falls outside that range, the sidewall shape changes and fitment, steering response, and clearance can all be affected.

The 825-16 has a nominal section width of 8.25 inches, which is about 209.6 millimeters. Section width is measured at the widest point of the inflated tire from sidewall to sidewall, not across the tread face.

Clearance checks should be based on section width rather than tread width because the sidewall bulge is often what comes closest to fenders, steering arms, springs, or inner body panels. On a vintage car, even a small width difference can affect full-lock steering clearance and the way the tire sits in the wheel opening.

Yes, 825-16 and 8.25-16 refer to the same basic numeric size. The difference is only in how the width is written, with one version dropping the decimal point and the other spelling it out more explicitly.

You may also see this size written as 82516, 825 16, 825X16, or 8.25X16. Those alternate formats are useful when searching old literature, wheels, or replacement tires, but the important fitment point is still the same: confirm the actual rim diameter, wheel width, and tire construction rather than relying on formatting alone.

The 825-16 is commonly a tube-type fitment and is often set up with a tube. Tube use is still a wheel-and-tire-system question rather than a size question, so the actual wheel design and the tire being used should be confirmed before installation.

Many vintage 16-inch wheel applications were originally engineered around tube service, especially on older passenger cars. Even so, buyers should verify the wheel condition, bead-seat design, and the tire manufacturer’s guidance before assuming a tube or tubeless setup. Matching the tire, tube, flap if required, and wheel correctly is part of a proper restoration-grade installation.

The 825-16 weighs 31 to 33 pounds depending on the specific version. In this size, one blackwall tire is listed at 31 pounds, while the wide whitewall version is listed at 33 pounds.

A small weight difference like that usually reflects casing details and sidewall treatment rather than a change in basic size. Tire weight matters because it contributes to unsprung mass, which can influence ride response on older suspension systems. It is also worth considering when a restorer wants all four tires to match exactly in construction and appearance.

The 825-16 is associated with classic passenger cars from the 1940s to early 1960s, and documented applications in this size include prewar Packard models from 1936 through 1940. That places it in the large vintage passenger-car category rather than in later muscle-car or modern replacement sizing.

Vehicle lists are best used as a starting point, not a guarantee. Original wheel dimensions, brake clearance, suspension travel, and body clearance should still be checked on the actual car. On older luxury and senior passenger cars, correct proportions matter almost as much as basic fit, since tire height and sidewall shape influence both stance and authenticity.

No. Sharing a 16-inch rim diameter does not make every wheel suitable for the 825-16. The tire is built for a 5.00 to 6.00 inch wheel width range, and wheel contour, condition, and intended tube setup also matter.

A wheel that is too narrow pulls the sidewalls inward and can make the tire appear overly rounded, while a wheel that is too wide flattens the profile and may create clearance issues at the fender or suspension. Vintage wheels should also be inspected carefully for rust, damage, and bead-seat condition before mounting any new tire.

The 825-16 is often a strong choice when the goal is a period-correct restoration of a prewar or early postwar passenger car that originally used this size range. Bias-ply construction matches the look, sidewall character, and driving feel that many restorers want to preserve.

Authentic fitment still depends on the exact vehicle, trim level, and wheel equipment. A judged restoration may require matching not only the size but also the sidewall treatment and overall tire profile expected for the car’s era. Checking original manuals, factory literature, and surviving examples is the best way to confirm whether the 825-16 is the right restoration choice.

The 825-16 bias-ply tire generally delivers the traditional ride and steering character expected from vintage passenger cars. Bias-ply construction tends to have more sidewall flex and a different on-center feel than a modern radial, which is part of why it looks and drives in a period-correct way.

Drivers should expect the overall experience to reflect the whole vehicle system, not just the tire. Suspension condition, steering-box adjustment, alignment settings, wheel condition, and vehicle weight all affect how a bias-ply car behaves. On a properly sorted classic, the 825-16 preserves the tall-sidewall character that many restorers consider part of the car’s original personality.

The 825-16 can be used for normal road service on an appropriately equipped vintage vehicle, but buyers should approach it as a classic bias-ply fitment rather than a modern all-purpose replacement. Driving feel, straight-line tracking, and braking response will reflect older construction characteristics.

Road manners depend heavily on tire age, inflation, alignment, and the mechanical condition of the car. A well-maintained classic on fresh tires will behave much differently than the same car on aged or poorly matched components. Before longer drives, owners should inspect the tires, confirm load suitability, and make sure the wheel and tube setup are correct.

The 825-16 contributes strongly to a tall, full wheel-opening look that suits larger vintage passenger cars. Its numeric bias-ply proportions are part of the visual balance many prewar and early postwar cars were designed around, especially on vehicles with generous fender openings and upright body lines.

Appearance changes quickly when tire proportions change, even if the wheel diameter stays the same. A different width or construction can alter shoulder shape, sidewall bulge, and how much daylight appears around the tire. For restorers, the 825-16 is often less about outright performance and more about keeping the car’s original stance and visual character intact.

BFGoodrich is available in the 825-16 size. In this size, buyers can choose between versions that keep the same basic bias-ply construction and load rating while changing the sidewall presentation.

Brand choice is only one part of the decision. Vintage tire buyers should also compare sidewall appearance, construction style, load capacity, wheel-width compatibility, and whether all four or five tires in the set will match. On a restoration, consistency across the full set usually matters as much as the name on the sidewall.

A quality 825-16 tire should match the vehicle’s intended use, wheel dimensions, and restoration goals before anything else. In practical terms, that means checking for correct bias-ply construction, proper 16-inch rim fit, suitable 5.00 to 6.00 inch wheel-width compatibility, and a load rating that matches the vehicle’s needs.

Collectors should also pay attention to how consistently the tire reproduces the period look the car requires. Sidewall treatment, casing shape, and overall proportions influence whether the finished car looks right. Even when two tires share the same size code, differences in visual presentation can matter on a prewar or early postwar restoration.

The right choice depends on the vehicle’s original trim and the look you want to preserve. In the 825-16, both blackwall and wide whitewall versions exist, so the size can support a more restrained appearance or a more formal period presentation without changing the basic fitment.

Factory literature, original photos, and surviving unrestored cars are useful references when deciding between those two styles. Sidewall appearance can change the entire character of a classic passenger car, especially in the prewar luxury market. Many restorers treat sidewall style as an authenticity decision, not just a cosmetic preference.

The 825-16 should be stored the same way any collector tire should be stored: away from heat, direct sunlight, standing moisture, and ozone sources such as electric motors or battery chargers. Clean, dry storage conditions help preserve the casing and sidewall over time.

Long periods of sitting can still age a tire even when tread wear looks minimal. Owners who store a car seasonally should inspect for cracking, hardening, flat spotting, and air loss before returning it to regular use. A vintage bias-ply tire can look presentable and still be too old or too compromised for dependable road service.

The 825-16 should be inspected regularly for cracking, bulges, cuts, uneven wear, and air loss, especially on a lightly driven classic. Vintage-size tires often spend long periods parked, which makes routine condition checks just as important as watching tread depth.

Before any tour, show trip, or extended highway run, inspect the sidewalls, tread area, valve hardware, and wheel condition. If the car uses tubes, the complete wheel-and-tire assembly deserves attention because leaks or deterioration may not show up the same way they do on a modern daily driver. Regular visual checks are simple, but they prevent surprises.

The best way to help the 825-16 last longer is to keep it properly maintained, correctly loaded, and used on sound wheels. Alignment, inflation checks, suspension condition, and avoiding chronic underuse all play a part in how evenly a classic bias-ply tire ages.

Driving the car occasionally can help reduce prolonged flat spotting, but trips should begin with a careful inspection of tire condition and air retention. Buyers should also remember that time matters as much as mileage. A lightly used collector tire can still need replacement if age, storage conditions, or visible deterioration raise concerns.

The 825-16 should be replaced when it shows cracking, bulges, cuts, persistent air loss, impact damage, or other signs of structural deterioration, even if the tread still looks usable. Age and storage history matter on vintage tires because low mileage does not stop rubber and internal materials from deteriorating over time.

Owners of collector cars should inspect tires before long trips, not just at annual service time. A bias-ply tire that has spent years parked can deserve replacement sooner than its tread suggests. If there is any doubt about condition, load suitability, or the wheel-and-tire setup, a qualified tire professional should inspect it before further road use.

In this size, the listed load rating is 2,030 pounds at 46 psi per tire. That figure is the maximum load for one tire at the stated inflation pressure, so the pressure and load number should always be considered together rather than separately.

Load verification is important on larger vintage passenger cars because curb weight, passengers, luggage, and touring use can all affect the actual demand placed on the tire. Buyers should match the tire’s rating to the vehicle’s real operating weight and intended driving pattern, especially before extended road use or fully loaded travel.

The most important checks are tire condition, wheel condition, correct rim size, proper wheel width, and a confirmed tube setup if the wheel and tire require one. The 825-16 fits a 16-inch rim and is commonly a tube-type fitment, but the exact wheel-and-tire combination should always be confirmed before use.

Beyond basic sizing, buyers should inspect for sidewall cracking, out-of-round condition, loose or damaged valve hardware, and signs that the tire has shifted or aged poorly in storage. For road use today, it is wise to review current sidewall markings, confirm load requirements, and make sure the vehicle’s steering and suspension are in safe operating condition.