1959 Morris sat at an especially interesting point in British motoring, with practical family saloons sharing the range with the newly introduced Mini and its sharper small-car packaging. In one year, the make covered everything from compact economy models to larger Oxford-based cars, and the tire requirements reflect that spread. Five Morris models used eight distinct tire sizes, with some models offering a period bias-ply size alongside a radial alternative while others, especially the Oxford, branch into additional model-specific 15-inch options. Before choosing a tire for your 1959 Morris, confirm the exact model first, then decide whether originality, sidewall appearance, or radial-versus-bias construction matters most for how you plan to use it.
Which Tire Size Is Right for Your 1959 Morris
Eight tire sizes appear across the 1959 Morris range, and they vary by model rather than being shared across every car in the lineup. The real choice usually starts with identifying the correct model and wheel diameter, then deciding whether you want a bias-ply tire for an earlier look and feel or a radial for more modern road manners where both constructions are offered. Understanding that difference first makes it much easier to narrow the right product.
Year(s): 1959|Fit(s): Crowley, Oxford|Construction: Radial|Rim: 15 in
155R15 is a radial metric size with a 155-millimeter nominal section width and a 15-inch rim diameter, using the traditional Euro-metric convention that typically implies an 80-series profile. It is offered in Firestone and Michelin lines with blackwall styling, and tube type versus tubeless varies by product; speed ratings also vary by product, including T-rated options up to 118 mph and H-rated options up to 130 mph. This size suits Crowley and Oxford owners who want a radial-format tire rather than the companion bias-ply choices available on those models.
Year(s): 1959|Fit(s): Crowley, Oxford|Construction: Bias Ply|Rim: 15 in
560-15 is a numeric bias-ply size in which 5.60 denotes the nominal section width and 15 identifies the rim diameter. Firestone and US Royal offer it with narrow whitewall and wide whitewall styles, and the listed examples are bias-ply products with load ratings of 970 pounds at 32 psi where stated. This is the period-style 15-inch choice for Crowley and Oxford models that use the 5.60 sizing format rather than a radial metric replacement.
Year(s): 1959|Fit(s): Mini Cooper, Mini Minor|Construction: Radial|Rim: 10 in
145R10 is a radial metric size with a 145-millimeter nominal section width mounted on a 10-inch rim, following the common Euro-metric convention that typically indicates an 80-series profile. Firestone, Kings, Camac, and Dunlop offerings in this size are blackwall radials, and speed ratings vary by product with at least one S-rated version carrying a 112 mph ceiling. This size is specific to the Mini Cooper and Mini Minor and is the radial-format choice for owners who want a compact 10-inch tire with more contemporary driving character than the matching bias-ply alternative.
Year(s): 1959|Fit(s): Mini Cooper, Mini Minor|Construction: Bias Ply|Rim: 10-in rim
5.20-10 is a numeric bias-ply size, with 5.20 representing nominal section width and 10 indicating the wheel diameter. No product selection is listed here in this size, so there are no sidewall, tube, or speed-rating variations to compare within the available range on this page. This size is specific to the Mini Cooper and Mini Minor and represents the earlier-style bias-ply fitment path for those 10-inch Morris small cars.
Year(s): 1959|Fit(s): Minor|Construction: Radial|Rim: 14 in
155R14 is a radial metric size with a 155-millimeter nominal section width and a 14-inch rim diameter, using the familiar Euro-metric format that typically implies an 80-series profile. Firestone and Michelin offer it as a blackwall radial, and tube type versus tubeless varies by product, with at least one T-rated example carrying a 118 mph ceiling. This size is specific to the Morris Minor and is the radial choice for owners who prefer a more modern road-going character on the 14-inch wheel.
Year(s): 1959|Fit(s): Minor|Construction: Bias Ply|Rim: 14 in
520-14 is a numeric bias-ply size where 5.20 is the nominal section width and 14 is the rim diameter. Premium Sport offers this size in narrow whitewall form, with original-design examples listing a 3.50- to 4.00-inch rim width range and a 1230-pound load rating at 60 psi where stated. This size is specific to the Morris Minor and is the bias-ply alternative for owners chasing an older appearance and construction style on the 14-inch wheel.
Year(s): 1959|Fit(s): Oxford|Construction: Radial|Rim: 15 in
165R15 is a radial metric size with a 165-millimeter nominal section width on a 15-inch rim, again using the Euro-metric convention that typically implies an 80-series profile. Coker Classic, American Classic, Firestone, and BFGoodrich offer this size in blackwall, narrow whitewall, and wide whitewall forms, with listed load capacities ranging from 1168 pounds at 35 psi to 1170 pounds at 36 psi. This size is specific to the Oxford and gives that model a broader radial selection with more sidewall-style variety than the smaller 155R15 fitment.
Year(s): 1959|Fit(s): Oxford|Construction: Bias Ply|Rim: 15 in
590-15 is a numeric bias-ply size in which 5.90 denotes nominal section width and 15 identifies the rim diameter. BFGoodrich and Avon offer it in blackwall and wide whitewall styles, and speed ratings vary by product, including H-rated examples up to 130 mph; listed load capacities reach 1050 pounds at 32 psi on BFGoodrich versions and 1,018 pounds on the Avon offering. This size is specific to the Oxford and serves buyers who want a larger 15-inch bias-ply option than 560-15 within that model family.
Five Morris models are covered for 1959, and tire sizing changes meaningfully from one model to the next. Some pairs of models share the same radial-and-bias options, while the Oxford carries additional 15-inch alternatives and the Minor uses its own 14-inch pair, so identifying the exact model matters before selecting a size. Choose a model below to narrow the fitment history and available tires more precisely.
1959 Morris Crowley
The Morris Crowley sits in the larger saloon part of the 1959 range and shares its tire pattern with another full-size Morris model rather than the smaller Minor or Mini variants. Its tires mount on 15-inch wheels, with one radial metric option and one numeric bias-ply alternative depending on the look and driving character you want.
The 1959 Morris Mini Cooper belongs to the revolutionary small-car side of the Morris story, built around the compact Mini package that changed expectations for space efficiency. Its tires mount on 10-inch wheels, and the choice is between a radial metric size and a numeric bias-ply size sized specifically for the Mini platform.
The Morris Mini Minor introduced buyers to the original Mini formula, with tiny overall dimensions and a wheel-and-tire package unlike the larger Morris saloons. It also uses 10-inch wheels, with one radial metric choice and one numeric bias-ply choice that fit only the Mini-based models in this year-and-make range.
The Morris Minor remained one of Britain's most recognizable everyday cars in 1959, known for its practical shape and broad appeal across saloon and family use. Its tires mount on 14-inch wheels, and the model uses its own size pair rather than sharing the 10-inch Mini setup or the 15-inch larger-car fitments.
The Morris Oxford was the larger, more substantial family car in the 1959 Morris lineup, and its fitment options are correspondingly broader than the rest of the range. It uses 15-inch wheels, with both shared Crowley sizes and additional Oxford-specific radial and bias-ply alternatives for buyers comparing appearance and sizing within the same wheel diameter family.
Twenty-eight products are available across eight tire sizes for 1959 Morris vehicles. 155R15 includes four radial blackwall choices from Firestone and Michelin; 560-15 has four bias-ply whitewall options from Firestone and US Royal; 145R10 offers four radial blackwalls from Firestone, Kings, Camac, and Dunlop; 155R14 has two radial blackwalls from Michelin and Firestone; 520-14 includes four bias-ply narrow whitewalls from Premium Sport; 165R15 offers four radial choices from Coker Classic, American Classic, Firestone, and BFGoodrich in blackwall, narrow whitewall, and wide whitewall styles; 590-15 includes three bias-ply options from BFGoodrich and Avon in blackwall and wide whitewall. Confirm your size and construction choice first, since tube status and speed ratings can vary within some sizes.
These answers sort out the real 1959 Morris questions: which models share sizes, how the Mini, Minor, Crowley, and Oxford differ, when a radial or bias-ply choice makes sense, and what to check before fitting collector-car tires for regular use or storage.
Size Basics & Fitment
What tire sizes fit 1959 Morris vehicles?
1959 Morris vehicles use eight sizes across five models. Crowley uses 155R15 or 560-15, Mini Cooper uses 145R10 or 5.20-10, Mini Minor uses 145R10 or 5.20-10, Minor uses 155R14 or 520-14, and Oxford uses 155R15, 560-15, 165R15, or 590-15. Rim diameters break out by model family: 10-inch for Mini Cooper and Mini Minor, 14-inch for Minor, and 15-inch for Crowley and Oxford.
That means year and make alone are not enough for a correct selection on 1959 Morris cars. Start by identifying the model, then match the wheel diameter, and only after that compare radial versus bias-ply options within the sizes that belong to your car. Where rim-width guidance is listed, it should be checked against the actual wheel before making a final choice, especially on Oxford and Minor applications where more than one 15-inch or 14-inch size path exists.
What does 560-15 mean on a 1959 Morris tire?
On a 1959 Morris tire, 560-15 is a numeric bias-ply size. The 5.60 figure refers to the nominal section width, and the 15 identifies the wheel diameter in inches. On the Morris range, that size belongs to the Crowley and Oxford and represents the bias-ply counterpart to 155R15 on those 15-inch cars.
Numeric sizes like 560-15 are common on period-correct restorations because they reflect the earlier sizing language used before modern metric radials became standard. If your 1959 Morris still wears a 15-inch wheel and you want the older construction type and classic sidewall presentation, 560-15 is the format to compare. The next step is deciding whether you want blackwall, narrow whitewall, or wide whitewall styling within the choices available for that size.
What does 145R10 mean on a 1959 Morris tire?
On a 1959 Morris tire, 145R10 is a Euro-metric radial size. The 145 identifies nominal section width in millimeters, the R denotes radial construction, and the 10 is the rim diameter in inches. In the 1959 Morris lineup, that size is used on the Mini Cooper and Mini Minor, both of which run 10-inch wheels rather than the larger diameters used by the Minor, Crowley, or Oxford.
That code matters because it immediately separates the Mini-based cars from the rest of the Morris range. A 145R10 radial gives a Mini owner a different construction type from the companion 5.20-10 bias-ply fitment, even though both belong to the same wheel diameter family. If you are sorting through a newly acquired car, the model badge and the wheel size usually narrow the answer quickly before you compare brand, speed rating, or sidewall style.
Buying the Right Tire
Should I choose the 155R15 or the 560-15 for my 1959 Morris?
For a 1959 Morris Crowley or Oxford, 155R15 is the radial choice and 560-15 is the bias-ply choice. Both are 15-inch fitments, but they represent different construction eras and different visual character. The radial side is offered as blackwall tires from Firestone and Michelin, while 560-15 bias-ply choices from Firestone and US Royal include narrow and wide whitewall styles.
The decision usually comes down to the kind of ownership experience you want rather than simple wheel compatibility. A buyer leaning toward period presentation and traditional construction often starts with 560-15, while a buyer prioritizing a radial-format tire for regular road use usually compares the 155R15 options first. Confirm the actual wheel width before finalizing either path, since some products carry published rim-width guidance and others are more narrowly specified.
What sidewall styles are available for 1959 Morris tires?
Sidewall styling varies quite a bit across 1959 Morris sizes. Radial sizes 155R15, 145R10, and 155R14 are offered here as blackwalls, while 165R15 adds blackwall, narrow whitewall, and wide whitewall choices. On the bias-ply side, 560-15 appears in narrow and wide whitewall form, 520-14 is offered as a narrow whitewall, and 590-15 is available as either a blackwall or wide whitewall.
That variety lets appearance play a larger role once you have the model and size sorted out. Mini applications are straightforward because the listed 145R10 choices are blackwalls, while Oxford owners have the widest cosmetic spread because 165R15 and 590-15 bring multiple whitewall and blackwall options into the picture. If originality matters for judging or period style, choose the sidewall treatment with the same care you give the size and construction.
What brands make tires for 1959 Morris vehicles?
Several brands cover the 1959 Morris range, but they are divided by size. Firestone and Michelin appear in 155R15, Firestone and US Royal cover 560-15, Firestone, Kings, Camac, and Dunlop appear in 145R10, Michelin and Firestone serve 155R14, Premium Sport covers 520-14, Coker Classic, American Classic, Firestone, and BFGoodrich appear in 165R15, and BFGoodrich plus Avon are offered in 590-15.
Brand choice matters most after you have narrowed the correct fitment, because the available styling and construction mix changes from size to size. A Mini owner shopping 145R10 is comparing a very different brand set from an Oxford owner evaluating 165R15 or 590-15. It is worth deciding first whether you need a radial or bias-ply tire, then comparing brands within that single size family instead of trying to compare the entire Morris range at once.
Fitting & Setup
What rim width do 1959 Morris tires require?
Published rim-width guidance depends on the specific 1959 Morris size. 155R15 appears with a 4.00- to 5.50-inch range on some products, 560-15 is listed at either 4.5 inches or 4.50 to 5.50 inches, 155R14 appears with a 4.00- to 5.50-inch range on some products, 520-14 is listed at 3.50 to 4.00 inches, 165R15 is listed at 4.50 to 6.00 inches, and 590-15 is listed at 4.00 to 4.50 inches.
Those ranges show why matching the wheel is just as important as matching the tire code on a 1959 Morris. Oxford owners in particular may be comparing multiple 15-inch sizes that do not share the same published rim-width range, even though they mount on the same rim diameter. Measure or verify the actual wheel before fitting a tire, especially if the car has changed hands, has mixed wheels, or has been restored with non-original rims at some point.
Do 1959 Morris tires require inner tubes?
Inner-tube requirements vary by product on some 1959 Morris sizes rather than staying uniform across the whole size. In 155R15, there are both tube-type and tubeless examples, and 155R14 also includes a tubeless-marked example alongside another product without the same marking. Other sizes on the page do not show enough consistent tube labeling to treat the entire size family as automatically tube-type or tubeless.
That makes the individual tire's sidewall marking and product specification more important than the size alone. If your 1959 Morris still uses original-style wheels, especially on an older British application, it is wise to confirm wheel design, valve-stem setup, and tube compatibility before installation rather than assuming all radials are tubeless or all bias-ply tires require tubes. This is one place where the exact tire chosen matters as much as the size code.
Can the original 1959 Morris wheels be used with both tire sizes on each model?
Many 1959 Morris models have a radial and a bias-ply option that share the same rim diameter within that model. Crowley pairs 155R15 with 560-15 on 15-inch wheels, Mini Cooper and Mini Minor pair 145R10 with 5.20-10 on 10-inch wheels, and Minor pairs 155R14 with 520-14 on 14-inch wheels. Oxford also keeps its alternatives within the 15-inch family, even when moving to 165R15 or 590-15.
Shared rim diameter does not automatically mean every wheel is ideal for every listed size, because the published rim-width ranges are not identical across all options. A 1959 Morris owner should treat original wheel use as likely in diameter terms but still verify width and tire-specific requirements before fitting a different construction or moving to one of the Oxford-only 15-inch alternatives. That extra check is especially worthwhile on cars with older restorations or replacement wheels.
Maintenance, Storage & Longevity
How should I store a 1959 Morris when the tires are fitted?
A stored 1959 Morris should be kept away from direct sunlight, standing moisture, electric motors, welders, furnaces, and other ozone sources that age rubber even when the car is not being driven. Clean, dry surfaces and stable inflation matter more than mileage for a collector car. Bias-ply tires are especially prone to flat-spotting during long static periods, while any older-style sidewall can suffer from cracking if storage conditions are poor.
For a Morris that sits for weeks or months at a time, move the car periodically or support it in a way that reduces constant load on one contact patch. Keep the tires inflated to a sensible stored condition and avoid parking with one side exposed to continuous window light. If the car wears tube-type products, include valve stems and tube condition in your seasonal storage inspection, not just tread and sidewall appearance.
How long do tires on a 1959 Morris typically last?
Tire life on a 1959 Morris is usually governed more by age than by mileage, because collector cars often cover limited annual distance. A good rule is to begin evaluating tires closely once they reach five to seven years of age and to consider replacement around the ten-year mark regardless of tread depth. The DOT date code on the tire is the starting point for understanding age.
That timeline is especially important on a Morris that looks lightly used, since old tires can appear presentable while the internal structure and rubber compound have already aged out. Heat cycles, storage conditions, inflation history, and sunlight exposure all affect service life. If you have just acquired the car and the tire age is older than expected, replacing aged tires is often a wiser first step than trying to judge them only by visible tread wear.
How often should tires on a 1959 Morris be inspected?
Tires on a 1959 Morris should be checked before every drive and again before any longer outing. Look for sidewall cracking, cuts, bulges, irregular tread wear, and pressure loss, and make sure the spare is in equally usable condition. Any car running products marked tube type, or likely using tubes because of wheel design, also deserves a quick valve-stem and leak check before road use.
Frequent inspection matters on older cars because tire issues often develop slowly while the car is parked rather than all at once on the road. A Morris with light annual use can still suffer from dry rubber, shifting balance, or air loss between drives. Build tire inspection into the same routine as checking fluids, brake feel, and lights, especially before club tours, highway stretches, or events that involve sustained speed.
Restoration & Authenticity
What tires were originally fitted to the 1959 Morris Mini Minor?
A 1959 Morris Mini Minor would have been associated with bias-ply construction in its original era, and within the listed choices the period-style size for that model family is 5.20-10. The radial alternative is 145R10, which belongs to the same 10-inch wheel family but reflects a later construction approach. Original-equipment brand can vary by market and period, so size and construction are the first authenticity checkpoints.
For a restoration-minded owner, that means the key question is whether you are preserving factory-era presentation or preparing the car for more frequent road use. If originality matters for a show field or period-correct appearance, start by comparing 5.20-10 fitment options and then verify any market-specific expectations through Mini and Morris marque clubs. Those groups are often the best source for confirming country-specific tire details beyond the core size and construction type.
Does correct tire fitment matter for showing a 1959 Morris?
Correct tire fitment matters on a 1959 Morris because judges and knowledgeable enthusiasts often notice size, construction, and sidewall treatment quickly. A Mini wearing a modern-looking radial when the car is being judged for strict originality tells a different story from one fitted with a period-style bias-ply size, and the same logic applies to Minor, Crowley, and Oxford models. Whitewall width and blackwall versus whitewall choice can also influence how authentic the car appears.
The practical takeaway is to match the tire to the restoration goal, not just the wheel diameter. A touring car can wear a different construction than a concours-focused car without either choice being inherently wrong, but event standards may favor one over the other. If you plan to show your 1959 Morris seriously, check the judging rules for that event and compare them with the model's correct size family before making the final tire decision.
What is the difference between 165R15 and 590-15 for the 1959 Morris Oxford?
For the 1959 Morris Oxford, 165R15 is a radial 15-inch size and 590-15 is a bias-ply 15-inch size, so the difference begins with construction as much as with the code. The 165R15 range includes blackwall, narrow whitewall, and wide whitewall offerings from several brands and is listed for 4.50- to 6.00-inch rims. The 590-15 range includes blackwall and wide whitewall examples, with listed rim widths of 4.00 to 4.50 inches on BFGoodrich versions and an H-rated Avon option available in that family.
That makes these two Oxford choices distinct not only in appearance but also in wheel-range guidance and product mix. An owner preserving a more traditional bias-ply presentation may focus on 590-15, while an owner looking for the Oxford-specific radial path will usually compare 165R15 products first. Because both are 15-inch sizes but not the same shape or published wheel-range fitment, confirm the actual rim width before moving from one family to the other.
Safety & Road Use
Are 1959 Morris tires safe for highway driving?
1959 Morris tires can be suitable for highway driving when they are the correct size, in sound condition, and used within the speed capability of the specific tire. Among the listed options, some sizes carry explicit speed ratings such as S at 112 mph, T at 118 mph, and H at 130 mph, while other products do not show a speed letter here. Those ceilings are higher than the normal cruising speeds most 1959 Morris cars will see in collector use.
Real-world highway safety on a 1959 Morris depends on more than the tire alone. Brake condition, steering play, suspension wear, alignment, and the basic limits of a late-1950s car often become the controlling factors before the tire reaches its published speed capability. For that reason, the best approach is to choose the correct tire type, inspect it carefully, and treat the whole car as a system rather than assuming a higher speed-rated tire alone transforms road behavior.
What inflation pressure should I use for 1959 Morris tires?
Inflation pressure on a 1959 Morris should follow the factory recommendation for the vehicle and the maximum-rated information printed for the specific tire, rather than copying a number across different sizes. The listed tires show several different load-and-pressure pairings where stated, including 1045 pounds at 44 psi for one 155R15, 970 pounds at 32 psi for 560-15, 694 pounds at 30 psi for one 145R10, 990 pounds at 44 psi for one 155R14, 1230 pounds at 60 psi for 520-14, 1168 pounds at 35 psi to 1170 pounds at 36 psi for 165R15, and 1050 pounds at 32 psi for 590-15.
Those figures are tire ratings, not blanket instructions for every Morris application. Use the owner's manual or marque guidance to establish the vehicle's target cold inflation pressure, then make sure the tire you chose is being operated within its own rated limits. Never assume that a pressure suitable for a 15-inch Oxford tire should also be used on a 10-inch Mini fitment or a 14-inch Minor fitment, because the size families and load capacities are different.
What should I check before taking a 1959 Morris on a longer drive?
Before a longer trip in a 1959 Morris, inspect each tire for cracking, cuts, bulges, uneven wear, and proper cold inflation, and do not forget the spare. Check valve stems, and if the car uses tube-type products or tube-dependent wheel arrangements, make sure there are no slow leaks or stem issues. Also confirm that the tires are age-appropriate for road use rather than simply having acceptable tread left.
A longer drive is also the time to think beyond the tires. Wheel security, steering response, brake feel, fluid levels, and cooling condition all matter on a late-1950s British car, especially if the route includes modern traffic speeds or sustained distances. Starting with a careful tire check is smart because tires are one of the few parts you can inspect thoroughly in minutes, but they should be part of a broader pre-tour mechanical routine.
