In 1951, Pontiac occupied a strong middle ground in the American market, offering full-size cars with straight-eight and six-cylinder appeal alongside practical body styles for everyday use. Buyers looking at 1951 Pontiac often find that the tire question is less about dramatic model-by-model differences and more about understanding which of the year's bias-ply sizes belongs to a particular application. Across three model lines, two closely related 15-inch sizes appear, with one shared broadly across the range and one used only on the 6 & 8 Cyl. line. Before choosing a tire, the first step is to confirm your exact model and decide how closely you want to follow a period-correct bias-ply fitment.
Which Tire Size Is Right for Your 1951 Pontiac
Two tire sizes are available for 1951 Pontiac vehicles, and they are not shared evenly across the full model range. Both are bias-ply 15-inch fitments, so the real choice starts with confirming your model and then selecting the correct period-style size before narrowing down brand or sidewall preference. Understanding that distinction up front saves time and helps match the tire to the right Pontiac application.
Year(s): 1951|Fit(s): 6 & 8 Cyl., 1951 Pontiac, Sedan Delivery|Construction: Bias Ply|Rim: 15-in rim
7.10-15/6 is a numeric bias-ply size in which 7.10 refers to the nominal section width and 15 is the wheel diameter in inches. This size is shared across the 1951 Pontiac range shown here, but no product range is attached to it on this page, so the main point is identifying it as a broad year-and-make fitment rather than a 6 & 8-specific alternative. Buyers pursuing a traditional 1951 Pontiac appearance will recognize it as an era-appropriate bias-ply format. It is the size to start from when your Pontiac, Pontiac model, or Sedan Delivery calls for the broader shared fitment rather than the alternate 710-15 listing.
Year(s): 1951|Fit(s): 6 & 8 Cyl.|Construction: Bias Ply|Rim: 15 in
710-15 is a numeric bias-ply size where 710 indicates the nominal section width designation and 15 identifies the wheel diameter in inches. This size is specific to the 1951 Pontiac 6 & 8 Cyl. models rather than the full Pontiac line, and it is offered in BFGoodrich and Firestone versions with Blackwall and Wide Whitewall sidewall styles. Available products are bias-ply throughout, with load ratings shown at 1550 pounds at 32 psi and rim width fitments of 5.00 to 5.50 inches. It suits owners who want a traditional postwar Pontiac tire look and who are selecting within the size range specific to the 6 & 8 Cyl. application.
Because both listed sizes use a 15-inch wheel, they can often share the same wheel diameter, but rim width should still be confirmed against the actual wheel and the specific tire chosen.
1951 Pontiac Models
Three 1951 Pontiac model lines are covered here. Tire size does vary by model, which means year and make alone are not quite enough; you should identify whether you have the broad shared Pontiac fitment or the 6 & 8 Cyl. application that also carries an alternate size listing. Select your model below to narrow the fitment history and see the tire choices that apply to that specific Pontiac.
1951 Pontiac 6 & 8 Cyl.
The 1951 Pontiac 6 & 8 Cyl. line represents Pontiac's mainstream passenger-car range of the period, when buyers could still choose between six- and eight-cylinder power in full-size American body styles. Its tires mount on 15-inch wheels, and this is the only model group here that carries both listed bias-ply sizes, making model confirmation especially important before choosing between them.
The 1951 Pontiac listing reflects a core Pontiac passenger-car application from the early postwar era, when the division emphasized substantial road manners and recognizable styling within GM's mid-priced field. Its fitment here is tied to a 15-inch wheel and centers on a single shared bias-ply size rather than multiple alternatives.
The 1951 Pontiac Sedan Delivery blends passenger-car foundations with light commercial utility, a body style valued today for both restoration and custom use. Its tires mount on 15-inch wheels, and the fitment shown here stays with one shared bias-ply size that matches its practical, early-1950s character.
Four products are available across two tire sizes for 1951 Pontiac vehicles. The 710-15 size includes four bias-ply options from BFGoodrich and Firestone in Blackwall and Wide Whitewall styles; 7.10-15/6 identifies a year-and-make fitment path to confirm before choosing your preferred period-style construction and appearance.
These FAQs sort out which 1951 Pontiac models use which sizes, how numeric bias-ply sizing works, what whitewall choices exist in 710-15, and what to check for fitment, storage, and longer road use on a collector Pontiac.
Size Basics & Fitment
What tire sizes fit 1951 Pontiac vehicles?
1951 Pontiac vehicles use two listed tire sizes: 7.10-15/6 and 710-15. The 7.10-15/6 size applies to the 1951 Pontiac 6 & 8 Cyl., 1951 Pontiac Pontiac, and 1951 Pontiac Sedan Delivery, while 710-15 applies only to the 1951 Pontiac 6 & 8 Cyl. Both sizes mount on 15-inch rims, and the available 710-15 products specify a 5.00 to 5.50 inch rim width range.
That means some 1951 Pontiac owners can begin with the size itself, while others need to identify the exact model first. If you own a 6 & 8 Cyl. car, check the existing wheel and any surviving factory references before choosing between the two listings. If you own a Pontiac or Sedan Delivery model shown here, the shared 7.10-15/6 fitment is the starting point, and wheel condition and rim width should still be verified before final selection.
What does 7.10-15/6 mean on a 1951 Pontiac tire?
On a 1951 Pontiac, 7.10-15/6 is a numeric bias-ply tire size. The 7.10 portion identifies the nominal section width, 15 is the wheel diameter in inches, and the format itself belongs to the bias-ply sizing conventions common on early-1950s American cars. It is not a modern metric radial size, so it should be read as an older domestic sizing code rather than converted casually to a later P-metric tire.
Understanding that format helps keep a restoration on the right path. A buyer comparing 7.10-15/6 to later tire notations should focus first on the era, construction, and intended visual stance of the car, not just the numbers. If your Pontiac is being preserved with an original-style appearance in mind, keeping the period bias-ply format front and center usually matters as much as the wheel diameter itself.
What does 710-15 mean on a 1951 Pontiac tire?
On a 1951 Pontiac, 710-15 is also a numeric bias-ply size, with 710 serving as the nominal section width designation and 15 indicating a 15-inch wheel. It appears only on the 1951 Pontiac 6 & 8 Cyl. application in this range. Available 710-15 products are all bias-ply and include both Blackwall and Wide Whitewall versions from BFGoodrich and Firestone.
That makes 710-15 a model-specific fitment question rather than a universal 1951 Pontiac answer. If your car falls within the 6 & 8 Cyl. group, this size opens the door to multiple appearance choices while staying within an early-1950s bias-ply framework. If your Pontiac is another model shown here, moving to 710-15 just because it is available would skip over the more important step, which is matching the tire size to the correct model application.
Buying the Right Tire
Should I choose the 7.10-15/6 or the 710-15 for my 1951 Pontiac?
The first rule for a 1951 Pontiac is to choose the size that matches your specific model application, not simply the one with more visible product options. The 7.10-15/6 size is the shared fitment across the 6 & 8 Cyl., Pontiac, and Sedan Delivery listings, while 710-15 is limited to the 6 & 8 Cyl. group. Both are bias-ply 15-inch formats, so this is primarily an application decision inside the same period-style construction family.
For most owners, the practical choice comes down to confirming the model, wheel, and the look you want the car to carry. A 6 & 8 Cyl. owner may have reason to compare both listings more closely, especially when balancing restoration accuracy against available whitewall style preferences. Owners of the other listed models should start with 7.10-15/6 and use the wheel itself, along with marque knowledge and existing tire markings, to confirm they are staying with the correct size path.
What sidewall styles are available for 1951 Pontiac tires?
1951 Pontiac tires in the listed 710-15 size are available in both Blackwall and Wide Whitewall styles. BFGoodrich offers Blackwall and Wide Whitewall versions, and Firestone is also available in Blackwall form. That gives owners a choice between a more understated service look and the brighter whitewall appearance strongly associated with many early-1950s American passenger cars.
The right sidewall style depends on how your Pontiac is being presented. A plain Blackwall often suits a more utilitarian or driver-focused look, while a Wide Whitewall aligns more closely with the visual character many restorers want on a postwar full-size Pontiac. If showing authenticity matters, sidewall style can influence the overall impression of the car almost as much as the size itself, so it is worth checking period photos or club guidance before deciding.
What brands make tires for 1951 Pontiac vehicles?
The listed 710-15 tire options for 1951 Pontiac vehicles come from BFGoodrich and Firestone. BFGoodrich appears in both Blackwall and Wide Whitewall versions under the Silvertown Classic Bias Ply series, while Firestone appears in Blackwall form under its Classic Bias Ply line. All of these are bias-ply offerings intended to preserve an early-1950s American fitment character.
Brand choice usually becomes most important after size and sidewall style are settled. A buyer comparing BFGoodrich and Firestone within 710-15 should look at the exact appearance, listed load and pressure markings, and wheel-width compatibility instead of assuming every reproduction bias-ply tire presents the same way. If your main goal is a historically appropriate look for a 1951 Pontiac, either brand keeps you within the proper construction family for the era.
Fitting & Setup
What rim width do 1951 Pontiac tires require?
The available 710-15 tires for 1951 Pontiac specify a rim width range of 5.00 to 5.50 inches on a 15-inch wheel. That width range is consistent across the listed BFGoodrich and Firestone products in this size. Both 1951 Pontiac sizes use 15-inch rims, but the wheel width should still be checked on the actual car before choosing a tire.
Rim width matters because it affects how the tire sits on the wheel and how closely the finished stance matches the intended shape. A wheel that is too narrow or too wide for the tire can alter appearance and behavior even when the diameter is correct. On a seventy-plus-year-old Pontiac, that verification step is especially important because wheels may have been changed during restoration, repair, or custom work over the decades.
Do 1951 Pontiac tires require inner tubes?
The listed 710-15 products for 1951 Pontiac do not carry tube-type or tubeless markers in the size notation shown here, so the practical question is less about the sidewall code and more about the wheel itself. On an early-1950s Pontiac, whether a tube is appropriate often depends on the original wheel design, its current condition, and the exact tire selected. Bias-ply restorations frequently deserve a closer look at the wheel's sealing surfaces, valve hole condition, and overall integrity.
A sound approach is to inspect the wheel before mounting and match the setup to the specific tire and wheel combination you are actually using. If the wheel is original, restored, or has any pitting or irregular sealing surfaces, a marque specialist or experienced vintage tire installer can help determine the proper path. Treat the tube question as part of the full wheel-and-tire assembly rather than a one-size-fits-all rule for every 1951 Pontiac.
Can the original 1951 Pontiac wheels be used with both tire sizes?
Because both listed 1951 Pontiac sizes use a 15-inch wheel diameter, the original wheels may be compatible by diameter with either size where the model application allows it. The strongest wheel-width guidance attached to the listed products is the 5.00 to 5.50 inch range shown for 710-15. Diameter compatibility alone, however, does not automatically settle whether both sizes are equally appropriate on a particular car.
The safe way to think about it is to separate wheel diameter from actual fitment choice. A 6 & 8 Cyl. owner may be able to compare both listed sizes on the basis of application and wheel measurements, while the other model lines shown here should stay with their assigned size path first. Original wheels should also be inspected for trueness, rust at the bead area, and prior repairs before mounting any fresh reproduction bias-ply tire.
Maintenance, Storage & Longevity
How should I store a 1951 Pontiac when the tires are fitted?
A stored 1951 Pontiac should be kept in a cool, dry, dark space away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment. Tire pressures should be kept at the intended storage level, and the car should be moved periodically or supported in a way that reduces prolonged loading in one spot. Bias-ply tires are more prone to developing temporary flat-spotting during long static periods than modern radials, so regular repositioning is worthwhile.
Collector storage habits directly affect how the car feels the next time it goes on the road. Even when tread wear is minimal, long exposure to heat, UV light, and ozone can age sidewalls and harden the casing. If your Pontiac is stored through a season, make tire inspection part of the wake-up routine before the first drive rather than assuming a low-mileage tire stayed unchanged while parked.
How long do tires on a 1951 Pontiac typically last?
Tires on a 1951 Pontiac should be judged by age and condition more than by miles traveled. A good collector-car rule is to begin evaluating them carefully once they are around five to seven years old and to treat the ten-year mark as a serious replacement point regardless of tread depth. The DOT date code and the tire's visible condition matter more than odometer use on a hobby car that may spend long periods parked.
That approach is especially important for a Pontiac that sees occasional drives, parades, or weekend outings instead of daily service. Tread can look healthy while the casing and sidewalls have already aged out. If the date code, sidewall condition, or ride quality raises doubts, replace the tires before planning regular road use, and do not let low mileage create a false sense of security on an older bias-ply-equipped car.
How often should tires on a 1951 Pontiac be inspected?
Tires on a 1951 Pontiac should be inspected before every drive, and the inspection should be more thorough before any longer outing. Look closely for sidewall cracking, weather checking, uneven tread wear, cuts, bulges, and any sign that the tire is losing pressure between drives. Valve stems and the condition of the spare also deserve attention on a collector car that may go months between road trips.
Regular inspection is one of the simplest ways to prevent a roadside problem in a car that may already demand more mechanical awareness than a modern vehicle. A brief walk-around catches issues that develop slowly in storage and become obvious only when the car is finally driven at speed. If anything about the tire's shape, pressure retention, or sidewall surface looks off, pause the drive plan and correct the issue first.
Restoration & Authenticity
What tires were originally fitted to the 1951 Pontiac 6 & 8 Cyl.?
A 1951 Pontiac 6 & 8 Cyl. would have been fitted in the bias-ply era, so the original construction type would be bias-ply rather than radial. The sizes associated here are 7.10-15/6 and 710-15, both on 15-inch wheels, which places the car squarely within the early-1950s American bias-ply fitment tradition. Original equipment branding could vary by market and sourcing, so the most reliable restoration baseline is size, construction, and appropriate sidewall presentation rather than assuming one universal factory brand.
That matters most when a car is being restored to factory character instead of simply made roadworthy. If your goal is authenticity, confirm the exact application using surviving manuals, build records, period photos, and Pontiac marque resources. A correct-looking bias-ply size with the right overall visual treatment will usually matter more to the car's finished appearance than chasing an unverified brand assumption from memory or hearsay.
Does correct tire fitment matter for showing a 1951 Pontiac?
Correct tire fitment absolutely matters when a 1951 Pontiac is shown for authenticity. Judges and knowledgeable enthusiasts will notice whether the tire size, bias-ply construction, and sidewall style suit the car's period and presentation. A modern-looking substitute, an incorrect whitewall treatment, or a size that changes the car's stance can stand out quickly on an early-1950s full-size Pontiac.
The level of scrutiny depends on the event, but tire details are part of the car's overall story and visual correctness. A local cruise night may tolerate broader interpretation, while a marque meet or concours setting often rewards era-appropriate construction and appearance. If the car is being prepared for judged competition, compare your choice against period imagery and check event-specific standards with Pontiac clubs or organizers before finalizing the setup.
What is the difference between BFGoodrich and Firestone 710-15 tires for the 1951 Pontiac?
Within the 710-15 size for a 1951 Pontiac, BFGoodrich and Firestone share the same listed load rating of 1550 pounds at 32 psi and the same 15-inch rim diameter with a 5.00 to 5.50 inch rim width range. The visible differences lie in brand, sidewall presentation, and listed weight. BFGoodrich appears in both Blackwall and Wide Whitewall forms, with examples shown at 21 to 23 pounds, while Firestone is listed in Blackwall form at 24 pounds.
That means the comparison is mostly about presentation and brand preference rather than one tire fundamentally changing the fitment category. Owners trying to match a certain showroom look may focus on whitewall availability, while others may simply prefer one historic American brand over the other. Since the core dimensions align closely, the final choice usually comes down to the appearance you want your 1951 Pontiac to carry once the correct size is confirmed.
Safety & Road Use
Are 1951 Pontiac tires safe for highway driving?
A properly sized, correctly mounted, and well-maintained tire can be suitable for normal highway use on a 1951 Pontiac, but the broader picture matters. The listed tires here are bias-ply products, which deliver period-correct driving character rather than modern radial behavior. On a car of this age, the condition of the steering, suspension, brakes, wheels, and alignment often matters just as much as the tire itself when evaluating highway confidence.
Owners should think of tire safety as part of the entire vehicle system. A fresh set of reproduction bias-ply tires will not transform a 1951 Pontiac into a modern freeway car, and it should still be driven with appropriate following distance and speed awareness for its era. If the car tracks poorly, wanders, or shows uneven wear, solve those issues before assuming the tire alone is the problem.
What inflation pressure should I use for 1951 Pontiac tires?
The listed 710-15 tires for 1951 Pontiac carry a maximum load rating of 1550 pounds at 32 psi, which tells you the tire's rated load-and-pressure relationship for that product. That figure is not automatically the same as the factory running pressure Pontiac originally recommended for every use condition. Tire pressure should be set with both the tire's construction and the vehicle manufacturer's guidance in mind.
The best practice is to start with the original Pontiac specification for the vehicle, then confirm that your chosen reproduction tire is being used within its own published limits. Do not transfer one pressure assumption from 710-15 to 7.10-15/6 or from one brand to another without checking the exact tire. Pressure also deserves periodic re-checking, because collector cars often sit long enough for small losses to accumulate between drives.
What should I check before taking a 1951 Pontiac on a longer drive?
Before a longer drive in a 1951 Pontiac, inspect every tire for cracking, cuts, bulges, embedded debris, irregular tread wear, and proper inflation. Check the spare as carefully as the four road tires, and make sure the valve stems are sound and the wheels show no obvious bead-seat corrosion or looseness. On an older bias-ply-equipped car, a visual inspection alone is not enough if the tires are aged, have been stored poorly, or have an unknown service history.
That tire check should happen alongside a broader mechanical review suited to an early-1950s car. Wheel bearing condition, brake function, steering play, and suspension health all influence how securely the Pontiac will travel once speed and distance increase. If the car has not been driven much recently, a short local shakedown run before the longer trip is a smart way to catch heat, handling, or pressure-retention issues while still close to home.
