1966 Plymouth Belvedere Tires

A 1966 Plymouth Belvedere uses one of three primary bias-ply tire sizes: 735-14, 775-14, or 825-14. The correct size depends on the exact sub-model. Big-engine applications use 735-14 or 775-14, the 6 Cyl. 2 Seat Wagon uses 775-14 or 825-14, and the 8 Cyl. 3 Seat Wagon uses 825-14.

That means the first step is identifying the exact Belvedere configuration before choosing a tire. All three sizes mount on 14-inch rims, but they are not interchangeable by assumption. Once the right primary size is confirmed, the next decision is whether to stay with a traditional bias-ply presentation or compare one of the radial equivalents tied to that specific size.

The covered tire fitments for a 1966 Plymouth Belvedere use a 14-inch rim diameter. That applies across the three primary sizes on this page: 735-14, 775-14, and 825-14. The tire size may change by sub-model, but the wheel diameter remains in the 14-inch range for these fitments.

Rim diameter is only part of the fitment picture, so it is still important to verify the actual wheel on the car before ordering tires. Collector cars and wagons are often changed over time, and wheel width can also matter when comparing available bias-ply products or looking at modern radial equivalents with their own recommended rim-width ranges.

The 1966 Plymouth Belvedere covers more than one body and equipment configuration, so tire fitment is not the same across every version. The size spread from 735-14 to 825-14 reflects different covered applications, including a big-engine passenger setup and wagon models that use larger primary bias-ply sizes.

That variation is why the exact sub-model matters more than the model name alone. A Belvedere owner should confirm the car's specific configuration, then compare the wheel on the vehicle to the tire size being considered. That check becomes even more important if the car has replacement wheels, suspension changes, or a previous owner’s tire conversion.

On a 1966 Plymouth Belvedere, 775-14 is a primary bias-ply tire size. It uses a vintage numeric size format rather than a modern metric radial designation, and the available tire offerings in this size are classic bias-ply products from BFGoodrich, Firestone, and US Royal.

That matters because a buyer choosing 775-14 is usually deciding whether to preserve the traditional construction and appearance or to evaluate one of the radial equivalents tied to that size. Keeping the primary bias-ply format supports a period-style presentation, while a conversion should include checks for wheel width, overall dimensions, and clearance on the actual vehicle.

Radial equivalents for 775-14 include 195R14 as an 80-series metric radial, P205/75R14 as a 75-series P-metric radial, P215/70R14 as a 70-series P-metric radial, and 750R14 as a bias-look radial equivalent. These options give the 1966 Plymouth Belvedere owner several radial sizing formats to compare against the original bias-ply fitment.

The practical difference is that each equivalent follows a different modern sizing convention, and the bias-look radial is the one most clearly aimed at preserving a more traditional visual character. A recommended rim-width range of 4-6 inches is associated with these equivalents, but wheel setup and clearance still need to be checked before treating any one of them as an automatic substitute.

Start by matching the radial alternative to the Belvedere's exact primary size. A 735-14, 775-14, and 825-14 each have their own equivalent radial options, so the conversion should begin with the correct original fitment rather than the model name alone. Wheel diameter, wheel width, and the equivalent size's intended rim-width range all matter.

The next checks are on-car conditions such as steering clearance, fender clearance, suspension condition, and any previous modifications. A wagon, big-engine car, or vehicle with replacement wheels may respond differently to a construction change. The safest approach is to verify the actual wheel and tire space at all four corners before moving from a period-style bias-ply setup to a radial alternative.

A 775-14 choice starts with confirming that this is the correct primary size for the exact 1966 Plymouth Belvedere sub-model. Once that is established, the main differences are brand, tire series, sidewall appearance, rim-width compatibility, weight, and maximum load figures where stated. In this size, BFGoodrich, Firestone, and US Royal all offer period-style bias-ply options.

That variety makes 775-14 one of the most appearance-driven sizes on the page. A buyer restoring a car may focus on redline, goldline, blueline, or narrow whitewall styling, while another owner may simply want a clean blackwall or traditional whitewall presentation. Wheel width and intended use should still be reviewed before narrowing the choice to one specific tire.

Sidewall choices for 1966 Plymouth Belvedere tires include blackwall, narrow whitewall, redline, goldline, and blueline, depending on the tire size selected. The broadest sidewall variety appears in 775-14, while 735-14 and 825-14 lean more toward blackwall and narrow whitewall offerings.

That means sidewall style should be chosen after the correct tire size is confirmed, not before. A stripe or whitewall treatment can strongly influence the car's overall look, but the same visual option is not available in every primary size. For a more restoration-oriented result, compare the tire's appearance to the car's trim, wheels, and intended period presentation.

Tires for the 1966 Plymouth Belvedere are available from BFGoodrich, Firestone, and US Royal, depending on size. BFGoodrich appears across all three primary sizes, while Firestone and US Royal are present in 775-14. The product mix also spans series such as Silvertown Classic Bias Ply, Firestone Classic Bias Ply, and US Royal Classic Bias Ply.

Brand choice should be considered alongside the correct size and the visual style you want on the car. Some buyers start with a preferred sidewall treatment and then see which brand offers it in the needed size. Others begin with the tire series or rim-width specification, especially if the Belvedere has been fitted with replacement wheels over the years.

For a period-style 1966 Plymouth Belvedere, the starting point is the correct primary bias-ply size for the exact sub-model: 735-14, 775-14, or 825-14. Staying with bias-ply construction preserves the tire format most closely associated with the car's original era, and the available classic series support a traditional Sixties presentation.

After size and construction are settled, the visual decision becomes sidewall style. Blackwall and narrow whitewall options suit many restoration-oriented builds, while redline, goldline, or blueline treatments are available in 775-14 for owners seeking a stronger muscle-era look. When exact originality matters, compare the tire choice with marque references and the car's individual history.

Tire construction changes more than road feel on a restored 1966 Plymouth Belvedere; it also changes the visual character of the car. A bias-ply tire keeps the vintage sizing format and period-style presentation associated with the Belvedere's era, while a modern radial introduces a more contemporary sizing convention and overall look.

That difference is especially important on a mid-Sixties Mopar, where wheel openings, ride height, and sidewall styling all contribute to the finished appearance. A bias-look radial can be part of the conversation for 775-14 or 825-14 owners who want radial construction with a more traditional look, but it still deserves a careful fitment check before installation.

Yes, modifications can affect tire fitment on a 1966 Plymouth Belvedere even when the tire size itself is correct for the sub-model. Aftermarket wheels, changes in wheel width, altered offset, suspension lowering, spring changes, or brake conversions can all influence how a 735-14, 775-14, or 825-14 tire sits in the car.

That is why the actual vehicle should be checked rather than relying only on model-year fitment. A Belvedere with replacement wheels may need closer attention to sidewall clearance, steering sweep, and fender space than a stock car. The same caution applies when comparing radial equivalents, since a different construction can change how the tire occupies space on the wheel.

Before driving a 1966 Plymouth Belvedere on new tires, inspect the wheels for the correct 14-inch diameter and suitable width, then confirm proper inflation and look over the rest of the tire installation. Lug hardware, valve stems, visible tread condition, and sidewall condition all deserve attention even when the tires are freshly mounted.

The vehicle itself should also be checked for suspension wear, steering play, and any signs of rubbing at full lock or over bumps. On a collector car that has spent long periods parked, a short test drive followed by a second inspection is a smart habit. That follow-up can reveal contact marks, pressure loss, or settling issues before longer road use.

Collector-car tire maintenance for a 1966 Plymouth Belvedere starts with regular pressure checks and visual inspections, even if the car is driven only occasionally. Bias-ply tires in 735-14, 775-14, or 825-14 should be watched for cracking, cuts, bulges, uneven wear, and signs of air loss, especially after long storage periods.

Storage conditions matter almost as much as mileage on a low-use Belvedere. Keeping the car away from prolonged heat, direct sunlight, moisture, and ozone-producing equipment helps protect the tires between drives. It also helps to inspect the tread and sidewalls before every outing, since age-related deterioration can appear on collector vehicles long before tread wear becomes the issue.