The 1963 Pontiac sits squarely in the full-size American car era, when long wheelbases, substantial curb presence, and smooth highway manners shaped how these cars were driven and restored. Tire choice matters here because the car uses 14-inch bias-ply fitments in either 800-14 or 850-14 depending on configuration. That opens up a practical decision between staying with traditional bias-ply construction or reviewing modern radial equivalents sized to preserve the proper overall look and stance. It also means paying attention to sub-model differences, especially air-conditioned cars and wagons, so the tire selected matches the vehicle’s weight, wheel setup, and restoration goals.
Which Tire Size Is Right for The 1963 Pontiac
The 1963 Pontiac uses two primary tire sizes, both in bias-ply construction on 14-inch rims. The first step is identifying the exact configuration, because most models can use either 800-14 or 850-14, while models with air conditioning and wagons use 850-14. Once the correct size is confirmed, the decision shifts to sidewall style, tire series, and whether to stay with traditional bias-ply construction or compare an appropriate radial equivalent.
An 800-14 size is a vintage numeric bias-ply designation in which the 8.00 figure refers to the tire’s nominal section width in inches and the 14 indicates the wheel diameter. On the 1963 Pontiac, this is a traditional bias-ply fitment that suits buyers aiming for a period-style ride and presentation on non-air-conditioned models outside the wagon line. Available choices include BFGoodrich, Universal Vintage Tire, and Goodyear, with blackwall, narrow whitewall, and wide whitewall sidewall treatments across series such as Silvertown Classic Bias Ply, Universal Classic Bias Ply, and Custom Super Cushion. It is the size to evaluate when preserving the original-style full-size Pontiac character matters as much as basic fitment.
Fit(s): All Models Except w/Air & Wagon, All Models w/Air, and Wagon
Construction: Bias Ply|Rim: 14 in
An 850-14 size uses the same vintage numeric bias-ply format, with the 8.50 figure indicating a nominally wider section width than 800-14 and the 14 identifying the wheel diameter. For the 1963 Pontiac, this bias-ply size is the fitment used on all models with air conditioning and on wagons, and it also appears on other configurations. Product choice is more focused here, with BFGoodrich options in the Silvertown Classic Bias Ply line and narrow whitewall or wide whitewall sidewall styles. This size deserves careful confirmation when the car carries added equipment or wagon duty, since those details affect which primary fitment applies.
Sub-model fitment matters on the 1963 Pontiac because tire choice is not completely uniform across the range. Most configurations can use either 800-14 or 850-14, while models with air conditioning and wagons are tied to 850-14, so confirming the exact version comes before choosing a tire style or considering a radial equivalent.
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1963 Pontiac All Models Except w/Air & Wagon
This group has the broadest fitment range, since it can use either 800-14 or 850-14 in bias-ply construction on 14-inch rims. That makes tire selection more about confirming the wheel and vehicle setup, then choosing the sidewall treatment and series that best match the car’s appearance and intended road use.
Air-conditioned 1963 Pontiac models use the 850-14 bias-ply size. For tire selection, that keeps the fitment path straightforward and places more emphasis on choosing between the available whitewall presentations or reviewing the radial-equivalent options tied specifically to 850-14.
The 1963 Pontiac Wagon uses the 850-14 bias-ply size on a 14-inch rim. That means the main choice is not between primary sizes, but between sidewall appearance, restoration character, and whether a modern radial alternative should be checked against the wagon’s actual wheels and clearance.
Bias-Ply to Radial Tire Conversion for the 1963 Pontiac
For the original 800-14 size, four radial-equivalent paths are available: 205R14 as an 80-series metric radial, P215/75R14 as a 75-series P-metric radial, P225/70R14 as a 70-series P-metric radial, and 800R14 as a bias-look radial. For 850-14, the available equivalents are 215R14 as an 80-series metric radial, P225/75R14 as a 75-series P-metric radial, and P235/70R14 as a 70-series P-metric radial. Both primary sizes carry a suggested 5-7 inch rim-width range for equivalent sizing, and any switch should be checked against wheel width, overall dimensions, and clearance.
Modern Radial Equivalents
205R14
Equivalent 80-series Metric Radial (800-14)
P215/75R14
Equivalent P-metric 75-series Radial (800-14)
P225/70R14
Equivalent P-metric 70-series Radial (800-14)
800R14
Bias-look Radial Equivalent (800-14)
215R14
Equivalent 80-series Metric Radial (850-14)
P225/75R14
Equivalent P-metric 75-series Radial (850-14)
P235/70R14
Equivalent P-metric 70-series Radial (850-14)
Important Considerations When Replacing Bias Ply With Radial
Compare overall diameter and section width carefully to ensure proper fit.
Verify recommended rim range (5-7 in) and load needs match your vehicle specifications.
Check fender clearance, steering clearance, and stance before installation.
Consider suspension condition and intended road use when choosing equivalents.
Important Fitment Notes
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1963 Pontiac Tires for sale
Available 1963 Pontiac tires center on 800-14 and 850-14 bias-ply fitments from BFGoodrich, Goodyear, and Universal Vintage Tire. Choices vary by series and sidewall presentation, including blackwall, narrow whitewall, and wide whitewall styles for buyers balancing restoration appearance with the correct size and wheel compatibility.
These 1963 Pontiac tire FAQs focus on the two primary bias-ply sizes, sub-model differences, 14-inch rim fitment, radial-equivalent options, sidewall choices, and the checks that matter before putting a restored or regularly driven full-size Pontiac back on the road.
Tire Size & Fitment
What tire size fits a 1963 Pontiac?
The 1963 Pontiac uses two primary tire sizes: 800-14 and 850-14, both in bias-ply construction on 14-inch rims. Fitment depends on the specific configuration, because all models with air conditioning and wagons use 850-14, while other models may use either size.
The practical step is confirming which version of the car is being fitted before choosing a tire. Once the correct primary size is known, the remaining decision usually comes down to sidewall style, tire series, and whether to stay with traditional bias-ply construction or compare a radial equivalent with the same rim diameter.
What size rim does a 1963 Pontiac use?
The 1963 Pontiac uses 14-inch rims with its primary tire fitments. Both 800-14 and 850-14 are built around a 14-inch wheel diameter, so the rim diameter remains consistent even though the tire sizes themselves differ.
That consistency simplifies one part of the fitment process, but wheel width still matters when selecting a tire or considering a radial alternative. It is worth checking the actual wheels on the car, especially if they may have been replaced over the years, because diameter alone does not confirm full compatibility.
Why does the 1963 Pontiac have more than one tire size?
More than one tire size appears because fitment varies by configuration within the 1963 Pontiac line. Non-air-conditioned models outside the wagon range may use either 800-14 or 850-14, while models with air conditioning and wagons use 850-14.
That means tire selection starts with identifying the exact setup rather than assuming every full-size Pontiac from 1963 uses the same size. A car’s equipment level, actual wheels, and any later changes should all be checked so the chosen tire matches the vehicle as it sits today.
Bias-Ply & Radial Options
Is 800-14 a bias-ply or radial tire for the 1963 Pontiac?
For the 1963 Pontiac, 800-14 is a primary bias-ply tire size. It uses the vintage numeric sizing system, and the available tires in that original fitment category are traditional bias-ply designs intended for a period-style look and driving character.
Radial alternatives do exist for buyers who want to compare modern construction, but they should be treated as equivalents rather than assumed replacements. Keeping bias-ply construction often makes sense for restoration-minded owners, while any radial conversion should be checked against wheel width, vehicle stance, and clearance.
What radial tire sizes are equivalent to 800-14 and 850-14?
For 800-14, radial equivalents include 205R14, P215/75R14, P225/70R14, and the bias-look radial size 800R14. For 850-14, the available equivalents are 215R14, P225/75R14, and P235/70R14. These options cover 80-series metric, 75-series P-metric, and 70-series P-metric radial formats.
Those equivalent sizes give a buyer several ways to move from a vintage bias-ply size into a radial format while staying on a 14-inch wheel. Even so, the chosen equivalent still needs to be checked against rim width, tire dimensions, and vehicle clearance before a conversion is made.
What should I check before converting my 1963 Pontiac from bias-ply to radial tires?
Start by matching the radial equivalent to the original primary size, then confirm that the wheel diameter and wheel width suit the tire being considered. On this Pontiac, the equivalent rim-width guidance tied to both primary sizes is 5-7 inches, which helps frame the wheel-compatibility check.
It also makes sense to inspect steering clearance, fender space, suspension condition, and the car’s actual stance before making the switch. A 1963 full-size Pontiac may have had wheel or suspension changes over time, so the conversion decision should be based on the car’s current setup rather than model year alone.
Choosing the Right Tire
What should I consider when choosing a 1963 Pontiac tire?
The first consideration is selecting the correct primary size, since this Pontiac may use either 800-14 or 850-14 depending on configuration. After size is confirmed, the next priorities are construction, sidewall appearance, and whether the tire suits a restoration-oriented car, a regularly driven cruiser, or a vehicle being evaluated for radial-equivalent conversion.
It also helps to compare wheel-width compatibility, load figures where shown, and the overall presentation each tire gives the car. A full-size 1963 Pontiac carries a very specific visual character, so the right choice usually balances proper fitment with the look the owner wants from the sidewall and tread profile.
What sidewall styles are available for 1963 Pontiac tires?
Available sidewall styles for the 1963 Pontiac include blackwall, narrow whitewall, and wide whitewall, depending on tire size and brand. The broader spread appears in 800-14, while 850-14 choices center on narrow whitewall and wide whitewall options.
Sidewall style has a strong effect on the finished appearance of a 1963 full-size Pontiac, especially on a car built around period trim and wheel covers. The best choice depends less on performance claims and more on matching the visual character of the vehicle while staying within the correct tire size.
What brands offer tires for the 1963 Pontiac?
Tires for the 1963 Pontiac are available from BFGoodrich, Goodyear, and Universal Vintage Tire. Brand coverage varies by size, with the widest assortment in 800-14 and a more focused BFGoodrich selection in 850-14.
Comparing brands makes the most sense after the correct size is settled, because the available series and sidewall treatments are not identical across both fitments. Looking at brand alongside tire series, sidewall style, rim-width specification, and load details gives a clearer picture than choosing by brand name alone.
Restoration & Appearance
Which tire should I choose for a period-style 1963 Pontiac?
A period-style 1963 Pontiac usually starts with the correct primary bias-ply size for the car’s configuration, either 800-14 or 850-14. Staying with bias-ply construction preserves the traditional sizing format and visual character that suit a restored full-size Pontiac from this era.
After size and construction are settled, the appearance decision shifts to the sidewall treatment and tire series that best complement the car. When exact originality matters, it is wise to compare the chosen tire against marque references, period photos, or restoration documentation tied to the specific vehicle.
How does tire construction affect the appearance of a restored 1963 Pontiac?
Tire construction changes more than ride feel on a restored 1963 Pontiac; it also changes how the tire looks on the car. A bias-ply tire maintains the traditional vintage sizing format and period-style presence, while a radial alternative can alter the overall visual impression even when it follows an accepted equivalent size.
That difference matters on a full-size Pontiac because tire shape and sidewall styling contribute heavily to the car’s stance. Owners focused on restoration appearance often keep bias-ply construction, while drivers seeking radial options should compare the finished look as carefully as the fitment details.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1963 Pontiac?
Yes, modifications can affect tire fitment on a 1963 Pontiac even when the original size is known. Aftermarket wheels, different wheel widths, suspension changes, ride-height changes, or body alterations can all influence how an 800-14 or 850-14 tire sits and clears the car.
That is especially important when the car is being changed from bias-ply to a radial equivalent, because the wheel and body setup may no longer match a stock configuration. Checking the actual rim diameter, wheel width, and clearance at both steering and suspension travel helps avoid fitment surprises.
What should I inspect before driving a 1963 Pontiac on new tires?
Before driving a 1963 Pontiac on new tires, inspect wheel condition, lug hardware, tire pressure, and basic clearance around the fenders and suspension. It is also smart to make sure the wheels match the intended tire diameter and width requirements, especially on a car that may have seen changes over time.
A low-use collector car deserves an extra walk-around before road use, including checks for fluid leaks, worn steering parts, and uneven ride height that could affect tire clearance. Taking a short initial drive and rechecking pressure and visual fitment afterward is a sensible final step.
How should 800-14 or 850-14 tires on a collector 1963 Pontiac be maintained?
Collector-car tires in 800-14 or 850-14 should be maintained with regular pressure checks, periodic visual inspections, and careful storage habits. Even when tread wear is low, an older tire can develop cracking, flat spotting, air loss, or sidewall damage simply from age and infrequent use.
Keeping the Pontiac in a clean, dry space away from prolonged sunlight and ozone sources helps preserve tire condition between drives. It also helps to inspect the tires before each outing and after longer storage periods so problems are caught early, before they affect road manners or safety.
