In 1956 Daimler stood apart as a traditional British luxury make, offering upright saloons and refined touring cars with an emphasis on craftsmanship rather than mass-market volume. The range spanned the sporting Century & Coupe, the smaller Conquest, the formal Four-Light Saloon, and the larger One-O-Four, so tire choice was not one-size-fits-all across the lineup. Seven distinct sizes appear across four models, with some cars offering a choice between bias-ply and radial constructions while others stay with a single model-specific size. The first step with any 1956 Daimler is to confirm your exact model, then decide whether originality, road manners, or both matter most in your tire selection.
Which Tire Size Is Right for Your 1956 Daimler
Seven tire sizes are available for 1956 Daimler vehicles, and they vary by model rather than being shared across the full range. For some models, the real choice is between bias-ply and radial construction on the same rim diameter, while the wider year-and-make range also spans both 15-inch and 16-inch wheels. Understanding that distinction before choosing a product saves time and helps match the tire to the correct Daimler model and intended use.
Year(s): 1956|Fit(s): Century & Coupe|Construction: Radial|Rim: 15 in
185R15 is a metric radial size with a nominal section width of 185 millimeters and a 15-inch rim diameter, using the traditional Euro-metric convention that generally implies an 80-series profile. This size for the Century & Coupe is offered in Coker Classic and Michelin products with redline, narrow whitewall, and blackwall sidewall styles, and the available speed ratings vary by product, including H rated to 130 mph and V rated to 149 mph. Buyers who want a radial option for a Century & Coupe and who care about touring-oriented road behavior will usually start here rather than with the bias-ply alternative.
Year(s): 1956|Fit(s): Century & Coupe|Construction: Bias Ply|Rim: 15 in
670-15 is a numeric bias-ply size in which 6.70 denotes the nominal section width and 15 is the rim diameter in inches. This Century & Coupe-specific size is available from Firestone, US Royal, Coker Classic, and Universal Vintage Tire in blackwall and wide whitewall styles, with load figures reaching 1450 pounds at 32 psi and 1550 pounds at 32 psi depending on the product. Owners pursuing a more period-correct look and traditional mid-century construction for the Century & Coupe will generally focus on this size.
Year(s): 1956|Fit(s): Conquest|Construction: Radial|Rim: 15 in
175R15 is a metric radial size with a 175-millimeter nominal section width on a 15-inch rim, following the older Euro-metric style that typically implies an 80-series profile. This size is specific to the Daimler Conquest. A product summary is not shown here, so the main takeaway is that Conquest owners considering a radial replacement should use 175R15 as their starting point rather than the larger Century & Coupe radial size.
Year(s): 1956|Fit(s): Conquest|Construction: Bias Ply|Rim: 15 in
600-15 is a numeric bias-ply size where 6.00 indicates the nominal section width and 15 identifies the rim diameter. This Conquest-only size is available in BFGoodrich products with blackwall and wide whitewall sidewall styles, and listed examples carry a 1150-pound maximum load at 32 psi. Conquest owners looking to preserve the smaller car's period presentation will usually concentrate on this bias-ply fitment.
Year(s): 1956|Fit(s): Four-Light Saloon|Construction: Bias Ply|Rim: 16 in
700-16 is a numeric bias-ply size with a nominal 7.00-inch section width and a 16-inch rim diameter. This size is specific to the Four-Light Saloon and appears in Lester, Avon, BFGoodrich, and Firestone offerings with blackwall and wide whitewall sidewall styles; one Avon example carries an L speed rating to 75 mph, while listed load figures run as high as 1900 pounds at 36 psi. Buyers restoring a formal saloon with an authentic period appearance will typically stay with this bias-ply size.
Year(s): 1956|Fit(s): One-O-Four|Construction: Radial|Rim: 16 in
185R16 is a metric radial size with a 185-millimeter nominal section width on a 16-inch rim, using the older Euro-metric convention that generally implies an 80-series profile. This One-O-Four-specific size is offered in Michelin, Avon, and Vredestein products with blackwall styling, and tube status and speed rating vary by product, including an S rating to 112 mph and V rated examples to 149 mph. One-O-Four owners who want a radial fitment should compare the individual products closely before choosing, especially where tube type and speed marking matter.
Year(s): 1956|Fit(s): One-O-Four|Construction: Bias Ply|Rim: 16 in
650-16 is a numeric bias-ply size in which 6.50 indicates nominal section width and 16 is the wheel diameter in inches. This size is specific to the One-O-Four and is available from BFGoodrich, Coker Classic, Firestone, and Garfield in blackwall and wide whitewall styles, with listed load capacity reaching 1580 pounds at 32 psi on several products. Owners aiming for a more original late-1950s presentation on the One-O-Four will usually begin with this bias-ply fitment.
Four Daimler models are covered for 1956, and tire size varies by model rather than carrying across the whole make. That means year and make alone are not enough here: Century & Coupe, Conquest, Four-Light Saloon, and One-O-Four each follow their own fitment path, with some models also offering a bias-ply-versus-radial decision within the same wheel diameter. Select your model below to narrow the fitment history and see the products tied to that specific Daimler.
1956 Daimler Century & Coupe
The Century & Coupe sat on the more sporting side of the Daimler range, blending traditional Daimler formality with a more driver-oriented character than the larger saloons. Its tires mount on 15-inch wheels, with both a radial and a bias-ply option available depending on whether the goal is a later-feel road tire or a more era-appropriate restoration look.
The Conquest was Daimler's more compact and accessible postwar saloon, still recognizably upscale but positioned below the make's larger offerings. It uses 15-inch tires, and the choice stays within Conquest-specific sizing rather than crossing over to the Century & Coupe despite the shared rim diameter.
The Four-Light Saloon reflects Daimler's traditional luxury-saloon identity, with a more formal body style and period-correct upright presentation. Its fitment centers on a 16-inch bias-ply tire, so buyers usually focus more on sidewall appearance and restoration character than on choosing between different constructions.
The One-O-Four was one of Daimler's substantial saloon offerings of the period, aimed at buyers who wanted traditional British luxury and presence. Its tires mount on 16-inch wheels, with one radial option path and one bias-ply path, so the model calls for both model identification and a clear sense of how the car will be used.
Sixteen products are available across seven tire sizes for 1956 Daimler vehicles. Options include 185R15 radials from Coker Classic and Michelin in redline, narrow whitewall, and blackwall styles; 670-15 bias-ply tires from Firestone, US Royal, Coker Classic, and Universal Vintage Tire; 600-15 bias-ply tires from BFGoodrich; 700-16 bias-ply tires from Lester, Avon, BFGoodrich, and Firestone; 185R16 radials from Michelin, Avon, and Vredestein; and 650-16 bias-ply tires from BFGoodrich, Coker Classic, Firestone, and Garfield. Confirm size and construction first, since tube status and speed ratings can vary within some sizes.
These FAQs sort out the model-by-model tire differences for 1956 Daimler cars, including where bias-ply and radial choices overlap, which sidewall styles appear in each size range, and what to check before fitting tires to a lightly used collector car.
Size Basics & Fitment
What tire sizes fit 1956 Daimler vehicles?
1956 Daimler vehicles use seven sizes across four models. The Century & Coupe uses 185R15 or 670-15 on 15-inch rims, the Conquest uses 175R15 or 600-15 on 15-inch rims, the Four-Light Saloon uses 700-16 on 16-inch rims, and the One-O-Four uses 185R16 or 650-16 on 16-inch rims. Where rim-width guidance appears, 185R15 products span roughly 4.5 to 6.5 inches, 670-15 runs from about 4.5 to 6.0 inches, 600-15 runs from 4.0 to 5.0 inches, 700-16 appears at 4.5 to 5.5 inches, 185R16 runs from 4.5 to 6.5 inches, and 650-16 commonly fits 4.5 to 5.0 inches.
Model identification matters first, because 1956 Daimler did not use one universal year-and-make size. After that, the next decision is whether your model has both a radial and a bias-ply path or only a single fitment. If your car has been restored or re-wheeled over the years, compare the tire size on the car now with the wheel diameter and width before making a final choice.
What does 670-15 mean on a 1956 Daimler tire?
A 670-15 on a 1956 Daimler is a numeric bias-ply size. The 6.70 figure is the nominal section width in inches, and the 15 is the wheel diameter in inches. On this year Daimler, 670-15 belongs to the Century & Coupe and represents the period-style bias-ply fitment rather than the radial alternative used on the same model.
That size code matters because it points you toward a traditional construction and a different wheel-width range than the radial option. Products in 670-15 also come in blackwall and wide whitewall variations, which can change the visual character of the car considerably. If your Century & Coupe is being restored for an era-correct look, 670-15 is usually the first size to investigate closely.
What does 185R15 mean on a 1956 Daimler tire?
A 185R15 on a 1956 Daimler is an older Euro-metric radial size. The 185 indicates a nominal section width of 185 millimeters, the R marks radial construction, and the 15 is the rim diameter in inches. In this period style of metric sizing, the aspect ratio is typically treated as an 80-series convention even when it is not written out in the size itself.
On a 1956 Daimler, that size applies to the Century & Coupe and signals a different construction approach from the 670-15 bias-ply option. The available examples include redline, narrow whitewall, and blackwall styles, along with different speed ratings depending on product. Buyers comparing tires within this size should pay attention to sidewall appearance and the exact speed marking rather than assuming every 185R15 is the same.
Buying the Right Tire
Should I choose the 185R15 or the 670-15 for my 1956 Daimler?
For a 1956 Daimler Century & Coupe, 185R15 is the radial choice and 670-15 is the bias-ply choice, and both mount on 15-inch wheels. The radial path includes products with H and V speed ratings, while the bias-ply path focuses on traditional construction and period-style sidewall presentations such as blackwall or wide whitewall. The difference is less about basic wheel diameter and more about construction character and presentation.
Owners who want a more original mid-1950s look usually start with 670-15, especially for restoration-minded use. Owners who plan to spend more time driving the car and prefer a radial format often begin with 185R15 instead. Before deciding, confirm the wheel width against the individual tire's approved range, since the Century & Coupe has products in both sizes that do not share the exact same width recommendations.
What sidewall styles are available for 1956 Daimler tires?
1956 Daimler tires appear in several sidewall styles depending on size. The 185R15 radial for the Century & Coupe is available in redline, narrow whitewall, and blackwall, while 670-15, 600-15, 700-16, and 650-16 bias-ply sizes include blackwall and wide whitewall options. The 185R16 radial shown for the One-O-Four is offered in blackwall form.
Sidewall appearance is often as important as the size itself on a 1950s luxury car. Wide whitewalls are the visual choice most buyers associate with formal period presentation, while blackwalls tend to look more understated and sporting. Redline on a 185R15 creates a distinctly different styling cue, so owners of a Century & Coupe should decide early whether they want traditional British formality or a more personalized period look.
What brands make tires for 1956 Daimler vehicles?
Several brands cover the 1956 Daimler range, but they are spread by size rather than offered across every model. The 185R15 size includes Coker Classic and Michelin; 670-15 includes Firestone, US Royal, Coker Classic, and Universal Vintage Tire; 600-15 includes BFGoodrich; 700-16 includes Lester, Avon, BFGoodrich, and Firestone; 185R16 includes Michelin, Avon, and Vredestein; and 650-16 includes BFGoodrich, Coker Classic, Firestone, and Garfield.
That means brand choice starts only after you have identified the right size for your specific Daimler model. Two owners shopping for 1956 Daimler tires may see completely different brand menus depending on whether they own a Conquest, a Four-Light Saloon, or a One-O-Four. Once size is settled, compare brand offerings for sidewall style, load rating, rim-width approval, and any speed marking that matters to how the car will be used.
Fitting & Setup
What rim width do 1956 Daimler tires require?
Rim-width guidance for 1956 Daimler tires varies by size. 185R15 products run from about 4.5 to 6.5 inches, 670-15 examples span roughly 4.5 to 6.0 inches, 600-15 runs from 4.0 to 5.0 inches, 700-16 appears at 4.5 to 5.5 inches, 185R16 runs from 4.5 to 6.5 inches, and 650-16 commonly fits 4.5 to 5.0 inches. Those ranges are wide enough that the wheel on the car should be measured or confirmed rather than assumed.
The practical point is that matching rim diameter alone is not enough, especially where a model offers both radial and bias-ply choices. A 15-inch or 16-inch wheel can still be too narrow or too wide for a given product within the approved range. Before fitting tires to a restored Daimler, verify the actual wheel width and compare it to the specific tire you plan to use, not just the size family in general.
Do 1956 Daimler tires require inner tubes?
Tube requirements on 1956 Daimler tires depend on the exact size and product. The Michelin 185R16 shown for the One-O-Four is marked TT, meaning tube type, while the Michelin 185HR15 examples for the Century & Coupe are marked TL, meaning tubeless. Other sizes are offered without a single universal tube marking across every product shown, so tube status can vary by product rather than by year and make alone.
That matters because an original-style wheel may lead you toward one setup, while a particular reproduction tire may call for another. Always check the actual sidewall designation on the tire you intend to fit and make sure the wheel condition, valve hardware, and any tube selected are appropriate for that construction. Mixing assumptions between radial and bias-ply products is an easy way to end up with the wrong installation parts.
Can the original 1956 Daimler wheels be used with both tire sizes on the same model?
Some 1956 Daimler models can use two tire sizes on the same wheel diameter, but that does not automatically make every wheel suitable for every product. The Century & Coupe uses either 185R15 or 670-15 on 15-inch rims, and the One-O-Four uses either 185R16 or 650-16 on 16-inch rims. Diameter compatibility is clear within those model pairs, while approved rim width still needs to be checked against the specific tire chosen.
That is especially important when moving between radial and bias-ply construction, because the listed width ranges are similar in some cases but not identical. Original Daimler wheels may also have been changed during the car's life, particularly on long-restored saloons and coupes. Treat the existing wheel as a part to be verified, not assumed, before fitting an alternate construction in the same nominal diameter.
Maintenance, Storage & Longevity
How should I store a 1956 Daimler when the tires are fitted?
A stored 1956 Daimler should be kept away from direct sunlight, standing moisture, and ozone sources such as electric motors, battery chargers, and welding equipment. Tire pressures should be maintained during storage, and the car should either be moved periodically or supported in a way that avoids leaving the full load on one footprint for months at a time. Bias-ply tires are especially prone to taking a temporary flat spot after long static storage, while any vintage-style sidewall can suffer from age cracking if storage conditions are poor.
For a collector Daimler, storage habits often affect tire life more than mileage. A saloon or coupe that only sees occasional outings can still age its tires prematurely if it sits under load in a hot garage or outdoors. Clean, dry indoor storage with stable inflation and occasional movement is the simplest way to preserve both radial and bias-ply tires between drives.
How long do tires on a 1956 Daimler typically last?
Tires on a 1956 Daimler should be judged primarily by age and condition rather than by tread depth alone. A sensible collector-car rule is to evaluate them closely once they reach about five to seven years of age and to treat around ten years as a serious replacement point even if the car has seen limited miles. The DOT date code and the sidewall condition matter more than how often the Daimler leaves the garage.
That approach reflects how many vintage cars are actually used: infrequently, but at speeds and distances where an old tire can still fail. Cracking, hardening, bulges, vibration, or a tire that no longer holds pressure well should move replacement higher on the list regardless of age. A low-mileage 1956 Daimler is not automatically on safe tires if those tires are simply old.
How often should tires on a 1956 Daimler be inspected?
Tires on a 1956 Daimler should be inspected before every drive and again before any extended outing. Look for sidewall cracking, cuts, punctures, bulges, uneven wear, and pressure loss, and include the spare in the same routine if the car is expected to travel any distance. Where a tire or installation uses a tube, the valve stem and surrounding hardware deserve the same level of attention as the tread and sidewall.
Frequent inspection is especially important on collector cars because long parking periods can hide problems until the day the car is needed. A tire that looked acceptable last season may have developed weathering, flat-spotting, or a slow leak while the car sat. Building a quick walk-around into every start-up routine is one of the easiest ways to keep an older Daimler reliable on the road.
Restoration & Authenticity
What tires were originally fitted to the 1956 Daimler Century & Coupe?
A 1956 Daimler Century & Coupe would have been associated with bias-ply construction in period, and the 670-15 size fits that historical pattern. The presence of a 185R15 radial option gives modern owners an alternate path, but radial construction was not the normal original-equipment expectation for a mid-1950s British luxury-performance car. If you are researching a specific market version or coachbuilt variation, the safest route is to treat the bias-ply size as the historical baseline and confirm details with marque-specific references.
For restoration work, that usually means deciding whether the car is being judged for originality or prepared for regular road use with a less period-correct construction. Sidewall style also matters, since blackwall, narrow whitewall, and wide whitewall choices can change the look of the finished car. Marque clubs and period photographs are valuable final checks when appearance is as important as basic fitment.
Does correct tire fitment matter for showing a 1956 Daimler?
Correct tire fitment matters on a shown 1956 Daimler because judges and knowledgeable enthusiasts often notice size, construction, and sidewall treatment immediately. A radial fitted to a car presented as factory-correct can stand out just as much as an overly modern sidewall look, while the wrong whitewall treatment can shift the car away from its intended market character. On a formal British saloon or coupe, tires are part of the overall authenticity story rather than a minor accessory.
That does not mean every event applies the same standard. Touring events may be more forgiving than concours-style judging, and some owners intentionally accept a deduction to gain the characteristics they want on the road. If the car is being built for serious presentation, confirm the accepted size, construction type, and sidewall style with the hosting organization or a Daimler marque specialist before the tires are mounted.
What is the difference between Michelin XVS and Coker Classic radial tires for the 1956 Daimler Century & Coupe?
For the 1956 Daimler Century & Coupe in 185R15, Michelin XVS and Coker Classic radial offerings differ in sidewall presentation, rim-width approvals, load information, and speed markings. The Coker Classic example is a redline tire with a 5.00 to 6.50 inch rim-width range and a listed maximum load of 1355 pounds at 35 psi. Michelin XVS appears in narrow whitewall and blackwall versions, with H-rated examples to 130 mph and a V-rated example to 149 mph, and its listed rim-width ranges span from 4.5 to 6.5 inches depending on the specific product.
That means the choice is not simply brand loyalty. Owners should compare the exact look they want on the car, the wheel width already in use, and whether the speed symbol matters to the intended driving style. A Century & Coupe restored with a very specific visual target may land on one sidewall style immediately, while a driver-oriented car may be chosen by the exact Michelin variant or the Coker redline presentation.
Safety & Road Use
Are 1956 Daimler tires safe for highway driving?
1956 Daimler tires can be suitable for highway use when they are the correct size, properly installed, and in sound condition, but the answer depends on the exact product and construction. The radial offerings shown include S-rated tires to 112 mph, H-rated tires to 130 mph, and V-rated tires to 149 mph, while one 700-16 Avon bias-ply example carries an L rating to 75 mph. On a mid-1950s Daimler, the car's own brakes, suspension condition, steering, and general mechanical health are often more limiting in real-world driving than the upper speed capability printed on the tire.
Highway safety is therefore about the whole package, not just the size code. A properly sorted Daimler on fresh, correctly inflated tires is very different from a car on aged rubber with old steering components and uncertain alignment. Match the tire's speed marking to realistic use, keep speeds sensible for the car's era, and inspect the tires carefully before any extended road trip.
What inflation pressure should I use for 1956 Daimler tires?
Inflation pressure on 1956 Daimler tires should follow the vehicle maker's specification for the car and the tire maker's rated limits for the exact product you choose. Several tire listings show load-and-pressure pairings, including 185R15 at 1355 pounds at 35 psi, 670-15 at 1450 pounds at 32 psi and 1550 pounds at 32 psi, 600-15 at 1150 pounds at 32 psi, 700-16 up to 1900 pounds at 36 psi, 185R16 up to 1433 pounds at 51 psi on one example, and 650-16 at 1580 pounds at 32 psi.
Those figures are tire ratings, not universal inflation instructions for every Daimler model. Do not transfer a pressure from one size to another or from a radial to a bias-ply tire just because the wheel diameter matches. Start with the vehicle's factory guidance, then confirm that your chosen tire's stated limits and load characteristics are appropriate for the installation.
What should I check before taking a 1956 Daimler on a longer drive?
Before a longer drive in a 1956 Daimler, inspect all five tires for cracks, cuts, bulges, uneven wear, and proper inflation, and confirm that the spare is usable. If the tire setup is tube type, look closely at valve stems and any sign of seepage or stem cracking. Wheel hardware, jack equipment, and a tire that has sat in one position long enough to develop vibration should be checked before the trip begins rather than after the car is already on the road.
Tires are only one part of the preparation, but they are the part that touches the road and often reveal whether the car is ready to travel. A longer outing in a 1956 Daimler also calls for a broader mechanical once-over covering fluids, cooling, brakes, and steering. Even so, starting with a careful tire inspection is one of the fastest ways to avoid preventable trouble on an older touring car.
