1971 Bentley Tire Fitment Guide

1971 Bentley vehicles in this range use one tire size: 815-15. That size applies to the 1971 Bentley T Series, and it mounts on a 15-inch wheel. The available products for 815-15 are built for rim widths from 5.00 to 6.50 inches, which gives you a concrete wheel-width range to confirm against the actual wheel before choosing a tire.

That single-size fitment makes the first step simpler than on many year-make pages, because you do not need to sort between multiple diameters or model-specific sizes. The more useful comparison is between sidewall appearances within the same size, especially if your Bentley is being restored for period presentation or judged display rather than simply prepared for occasional road use.

On a 1971 Bentley, 815-15 is a numeric bias-ply tire size. The 8.15 portion refers to nominal section width, while the 15 refers to the wheel diameter in inches. Because it is a classic numeric format rather than a modern metric code, it does not present width, aspect ratio, and construction in the same way a later radial size would.

Understanding that code helps keep the search focused on the correct type of vintage tire instead of trying to compare it directly to modern passenger-car markings. For a Bentley T Series, the code points you toward a proper 15-inch bias-ply fitment and then lets you narrow the decision by sidewall style, appearance, and how closely you want the tire to reflect an early-1970s luxury-car presentation.

Yes. The 1971 Bentley model covered here, the T Series, uses 815-15 across the range. There is no split between different tire sizes or wheel diameters at the year-and-make level, so a buyer is not choosing among several fitments for different Bentley models in 1971.

That consistency means your main responsibility is verifying that the car is in fact a 1971 Bentley T Series and that the wheels remain in the expected 15-inch specification. Once that is confirmed, the decision becomes much more straightforward and centers on whether a narrow whitewall or a whitewall-redline presentation best matches the way your particular car is restored and driven.

1971 Bentley tires in 815-15 are available in two sidewall styles: Narrow Whitewall and Whitewall-Redline. Both are BFGoodrich bias-ply tires in the same size and with the same published load figure of 1610 pounds at 32 psi. The difference is visual presentation rather than basic fitment, construction type, or wheel diameter.

For a Bentley T Series, a narrow whitewall usually aligns most naturally with the formal, upscale luxury-car appearance buyers expect from the period. A whitewall-redline treatment creates a more stylized look that may appeal to owners personalizing the car or matching an established restoration theme. Since both are the same size, your choice should be driven by authenticity goals and the visual character you want the car to carry.

BFGoodrich supplies the available 815-15 tires for 1971 Bentley fitment here, both in the Silvertown Classic Bias Ply series. The brand appears in two visual variations of the same size rather than in separate construction types or alternate diameters. That keeps the brand decision simple and shifts attention toward sidewall styling and period presentation.

BFGoodrich has long-standing recognition in the American collector tire world, and that familiarity can be helpful when sourcing a reproduction-style tire for a luxury car that benefits from a traditional look. Since there is only one brand represented in this fitment, comparing the two available sidewall treatments is more important than shopping among multiple manufacturers with different casing types or speed categories.

The two BFGoodrich 815-15 tires for the 1971 Bentley share the same core specifications: both are bias-ply, both fit 15-inch wheels, both are intended for 5.00- to 6.50-inch rim widths, both weigh 25 pounds, and both carry a maximum load of 1610 pounds at 32 psi. The practical difference is sidewall treatment, with one built as a 1.00-inch Narrow Whitewall and the other as a 1.00-inch whitewall with a 3/8-inch redline accent.

That means the decision is almost entirely aesthetic. Owners seeking a formal factory-era appearance will often gravitate toward the plain narrow whitewall, while the redline-accented version suits a more personalized or period-custom presentation. Since the dimensional and load characteristics match, it is wise to choose based on the visual theme of the car rather than expecting one of the two to change fitment behavior.

The 815-15 tires used on 1971 Bentley vehicles fit 15-inch wheels and are suited to rim widths from 5.00 to 6.50 inches. That range applies to the available BFGoodrich bias-ply options in this size. Rim width matters because it affects how the tire sits on the wheel and how closely the mounted shape matches the tire’s intended profile.

Before finalizing a tire choice, measure or verify the actual wheel on the car rather than relying only on assumptions about originality. Many collector cars have had wheels changed over the decades, and even when the wheel diameter is correct, width can still differ. Confirming the wheel first helps avoid a mismatch in sidewall shape and preserves the look expected of a full-size British luxury car.

The available 815-15 products for 1971 Bentley do not carry tube-type or tubeless markings in the size description here, so the safest approach is to confirm the exact tire’s sidewall marking and then match that with the wheel design you are using. On collector cars from this era, wheel construction and condition can matter just as much as the tire itself when deciding whether a tube is appropriate.

If your Bentley retains original-style wheels, inspect the wheel thoroughly for corrosion, bead-seat condition, and valve-stem compatibility before mounting new tires. A restorer familiar with Bentley and Rolls-Royce saloons of this period can help you make the final tube decision without guessing. That is especially worthwhile when originality and proper road manners are both part of the goal.

A 1971 Bentley should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment that can age rubber. Keep the tires clean, maintain proper inflation, and move the car periodically so the same footprint is not carrying the vehicle’s weight for months at a time. Bias-ply tires are more prone than radials to taking a temporary flat spot during long static storage.

If the Bentley will sit for an extended season, many owners either roll it occasionally or support it in a way that reduces prolonged tire loading while still respecting the suspension. Good storage habits preserve sidewall appearance as well as drivability, which matters on a formal luxury saloon where visible cracking or shape distortion stands out quickly against the car’s otherwise elegant presentation.

Tires on a 1971 Bentley should be judged by age and condition more than by mileage, because collector cars often cover very few miles each year. A practical rule is to inspect them closely once they reach the five- to seven-year range and to treat about ten years as the point where replacement deserves serious consideration, even if tread depth still looks acceptable. The DOT date code on the tire helps establish age.

That approach is especially important on a Bentley T Series because a low-mileage car can appear healthy while the rubber itself has been aging quietly from time, heat cycles, and storage conditions. If the car is driven on tours, to events, or at sustained road speeds, age becomes even more important than appearance alone. A fresh-looking tread pattern is not a substitute for sound rubber structure.

Tires on a 1971 Bentley should be inspected before every drive and again before any longer outing. Check inflation, sidewall cracking, tread wear, cuts, bulges, and any sign that the car has been sitting long enough to create a noticeable flat spot. A fuller inspection at regular service intervals is wise even when the car is used only occasionally.

That routine matters because collector cars often spend more time parked than driven, and age-related problems can appear before wear-related ones. On a heavy luxury saloon, catching pressure loss or sidewall deterioration early helps maintain stability and ride quality. Include the spare in the same inspection cycle, since an original-looking spare that has aged out may not be much help when you actually need it on the road.

A 1971 Bentley T Series would have been associated with period-correct bias-ply fitment in the 815-15 size reflected here, rather than with a modern metric radial code. For a luxury British saloon of this era, size, construction type, and sidewall presentation all contribute to whether the car looks right at a glance. Original-equipment branding can vary by market and delivery history, so size and construction are the most reliable starting points.

Owners aiming for historical accuracy should treat 815-15 bias-ply fitment as the baseline and then confirm market-specific details through Bentley marque specialists, factory literature, or club judging guides. That extra step is worthwhile because British luxury cars were often delivered into different markets with slightly different visual expectations. Getting the broad tire type right first avoids the biggest restoration mismatch.

Yes, correct tire fitment matters when showing a 1971 Bentley, especially at events where authenticity and presentation are judged closely. Size, construction, and sidewall style all influence whether the car reads as properly restored for its era. A tire that is visibly too modern in profile or sidewall treatment can stand out on a formal Bentley even if the rest of the restoration is carefully executed.

For the T Series, using the proper 815-15 bias-ply format helps preserve the car’s period stance and visual balance. The sidewall choice also matters, since a narrow whitewall typically suits a restrained luxury-car presentation more naturally than a more stylized accent. If the car is being prepared for judged competition, consult the event’s standards or a Bentley club advisor before finalizing details.

The narrow whitewall and whitewall-redline BFGoodrich tires for the 1971 Bentley share the same key specifications: 815-15 sizing, bias-ply construction, 15-inch rim diameter, 5.00- to 6.50-inch rim-width compatibility, 25-pound weight, and a 1610-pound maximum load at 32 psi. The distinction is entirely in the sidewall appearance, with one tire using a plain 1.00-inch whitewall and the other adding a 3/8-inch redline accent.

From a restoration standpoint, that means neither tire changes the car’s basic fitment, but one may align better with your target presentation. A narrow whitewall is generally the more restrained and formal look for an early-1970s Bentley saloon. The redline-accented version belongs more to a personalized visual theme, so it is best chosen intentionally rather than as a default replacement.

The available 1971 Bentley tires here are bias-ply 815-15 products, and no speed rating appears in the size marking. That means they should be approached as vintage-style tires intended for the normal operating expectations of a classic luxury car rather than judged by the labeling conventions of modern high-speed radials. On a well-maintained Bentley T Series, overall mechanical condition, brake performance, steering condition, and suspension health are every bit as important as the tire itself during highway use.

For practical road use, keep speeds appropriate to the tire type, the age of the vehicle, and the route you plan to travel. A Bentley that tracks straight, holds proper pressure, and shows no age-related tire defects can be enjoyed on modern roads, but it rewards a conservative, well-prepared approach. If frequent long-distance highway travel is your priority, inspect the entire chassis and tire system before relying on any classic tire setup.

The available 815-15 tires for 1971 Bentley carry a maximum load of 1610 pounds at 32 psi. That figure is the tire’s load-and-pressure rating, not automatically the factory operating pressure your Bentley should run in all conditions. The correct day-to-day inflation target should be checked against Bentley factory guidance for the car and then balanced with the tire maker’s specifications for the reproduction tire you are using.

Using the proper pressure matters for steering feel, tread wear, ride quality, and casing shape, especially on a heavy luxury car with bias-ply tires. Do not transfer a pressure habit from another classic car or from a modern radial setup and assume it applies here. Start with vehicle guidance, verify condition after a few drives, and keep pressures consistent across the axle unless the factory literature calls for something different.

Before a longer drive in a 1971 Bentley, inspect each tire for cracking, cuts, bulges, uneven wear, and any sign of impact damage. Verify cold inflation pressure, check the valve stems, and make sure the spare is usable rather than simply present. Because the Bentley T Series is a substantial and sophisticated saloon, tire condition should be part of a broader look at brakes, steering, suspension, fluids, belts, hoses, and electrical health.

A careful pre-drive routine is especially important when a collector car has been sitting between outings. Tires may lose pressure slowly, develop storage-related shape changes, or reveal age cracking only once the car is washed and inspected in good light. Taking a few extra minutes before departure reduces the chance that a simple tire issue interrupts an otherwise enjoyable touring day in a car built for dignified long-distance motoring.