1961 Toyota Tiara Tires

A 1961 Toyota Tiara can use two primary tire sizes: 590-13 in bias-ply construction and 165R13 in radial construction. Both sizes are built for 13-inch rims, so the fitment question is centered more on construction type and wheel width than on switching to a different wheel diameter.

The practical choice comes down to how the car is being used and presented. A 590-13 keeps a more traditional vintage look, while 165R13 gives the Tiara a radial-size option in a period small-car format. Before choosing, check the actual wheel width on the car and confirm that nothing has been changed from stock over the years.

The 1961 Toyota Tiara uses a 13-inch rim with both of its applicable tire sizes. That includes the 590-13 bias-ply fitment and the 165R13 radial fitment, so wheel diameter remains consistent even though the tire constructions differ.

Rim diameter is only part of the fitment picture, especially on an older imported sedan. Wheel width matters too, because the bias-ply and radial offerings are suited to different width ranges. It is worth measuring the wheels on the car rather than relying on assumption, particularly if the Tiara has replacement wheels or has been off the road for many years.

590-13 is a vintage numeric bias-ply size. The 590 refers to an approximate 5.90-inch nominal section width, and the 13 identifies the wheel diameter in inches. On a 1961 Toyota Tiara, it is the traditional bias-ply tire size and carries the older sizing language common to many cars of that era.

Understanding that format helps when comparing it to radial alternatives. A 590-13 is not written in the same way as a modern metric radial, so the size code itself does not tell the whole story of interchange. Any move away from that bias-ply size should include a careful look at wheel width, vehicle stance, and available clearance around the tire.

590-13 is the bias-ply tire size used on the 1961 Toyota Tiara. It uses a vintage numeric sizing format and represents the more traditional construction choice for this car, especially for owners who want an older-style tire presentation on a 13-inch wheel.

That matters because the Tiara also has a radial option in 165R13, and the two constructions can change the car’s look and setup requirements. A bias-ply choice is often tied to appearance and restoration goals, while a radial choice shifts the conversation toward wheel-width suitability and how the car will be driven once it is back in service.

Radial equivalents for 590-13 include 165R13 as an 80-series metric radial, P165/75R13 as a P-metric 75-series radial, and P175/70R13 as a P-metric 70-series radial. These are three distinct radial-equivalent paths for owners considering alternatives to the original bias-ply sizing format.

Each one should be treated as an alternative to evaluate, not an automatic swap. The recommended rim-width range associated with the equivalent conversion is 4 to 5 inches, and the car’s actual wheel width still needs to be confirmed. It is also smart to compare overall clearance at the fenders and steering components before changing construction or profile.

Either can be appropriate on a 1961 Toyota Tiara because both a bias-ply size and a radial size are used for the car. The bias-ply choice is 590-13, while 165R13 covers the radial side. The better option depends on whether the priority is traditional appearance or a move toward a radial configuration.

A restoration-minded Tiara may lean toward the bias-ply route, especially with a wide-whitewall presentation. A driver-focused car may point toward the radial side, but the wheels need to be checked carefully because the available products are built around different width ranges. Construction choice should follow the car’s intended use, current wheels, and overall fitment condition.

Start with the two correct size paths for the 1961 Toyota Tiara: 590-13 in bias-ply construction or 165R13 in radial construction. From there, the key factors are wheel width, the look you want the car to have, and whether you are trying to preserve a more traditional presentation or move to a radial-style setup.

Product differences also matter. The radial side is available in blackwall form from Michelin and Dunlop, while the bias-ply option brings a wide-whitewall appearance through BFGoodrich’s Silvertown Classic Bias Ply series. Comparing construction, sidewall style, and wheel compatibility usually tells the buyer more than simply choosing by brand name alone.

The available sidewall styles for a 1961 Toyota Tiara include blackwall and wide whitewall. Blackwall choices appear in the 165R13 radial offerings from Michelin and Dunlop, while the 590-13 bias-ply option is available with a 2.375-inch wide whitewall in the BFGoodrich Silvertown Classic Bias Ply line.

That makes sidewall style an important part of the buying decision, not just a cosmetic detail. A blackwall radial tends to suit owners who want a cleaner, more understated look, while a wide whitewall gives the Tiara a stronger period-style visual presence. The sidewall choice should be matched to the car’s restoration theme and construction choice.

Tires for the 1961 Toyota Tiara are available from Michelin, Dunlop, and BFGoodrich. Michelin and Dunlop cover the 165R13 radial side, while BFGoodrich provides the 590-13 bias-ply option through the Silvertown Classic Bias Ply series.

Brand choice is only one part of the comparison. The more useful way to narrow the field is to decide first between the radial and bias-ply fitments, then compare sidewall style, tire series, and wheel-width suitability within that path. That approach keeps the selection focused on how the Tiara will look and how the tire will fit the wheel you actually have.

For a period-style 1961 Toyota Tiara, the 590-13 bias-ply size is the natural starting point because it preserves the vintage numeric sizing format and traditional construction associated with the car’s era. The available BFGoodrich Silvertown Classic Bias Ply in wide whitewall form also supports an unmistakably older visual presentation.

That does not automatically make it the right answer for every restoration. Some owners want the car to read as period-inspired while still using a radial format such as 165R13. If exact originality matters, compare the tire choice against marque references, photos, and vehicle-specific historical documentation before settling on size, construction, and sidewall style.

Tire construction changes the visual character of a restored 1961 Toyota Tiara more than many buyers expect. A 590-13 bias-ply keeps the car in a distinctly early-1960s presentation, especially with a wide whitewall, while a 165R13 radial gives the Tiara a more modernized vintage look through a blackwall radial profile.

That difference matters even when both tires fit a 13-inch wheel. On a restoration-focused car, the choice influences stance, sidewall impression, and the overall feel of the finished vehicle. Owners trying to strike a middle ground often begin by deciding whether appearance or road-use preference matters most, then select the tire type that supports that goal.

Yes, modifications can affect tire fitment on a 1961 Toyota Tiara even when the tire size itself is correct. Aftermarket wheels, changed wheel width, altered offset, suspension work, or body changes can all influence how a 590-13 or 165R13 tire sits in the wheel opening and how much clearance remains at full steering travel.

That is why the car should be checked as it actually exists today, not only by its original size chart. Measure wheel width, confirm the 13-inch diameter, and inspect for clearance at the fenders and suspension. Older imported cars are often modified over time, and even a modest wheel or ride-height change can alter the final fitment picture.

Before driving a 1961 Toyota Tiara on new tires, inspect the wheels for correct diameter and condition, verify that the lug hardware seats properly, and make sure the chosen tire size matches the wheel setup. It is also smart to look over steering and suspension components so the new tires are not being installed onto a worn or misaligned foundation.

The tires themselves deserve a careful once-over after installation. Check inflation, confirm there is no rubbing at full lock, and look for adequate clearance around the fenders and underbody. A short initial drive followed by another inspection can reveal settling, contact marks, or air-loss issues before the car is taken on regular road use.

Tires on a collector 1961 Toyota Tiara should be maintained with regular pressure checks, visual inspections, and careful storage habits. Whether the car is on 590-13 bias-ply tires or 165R13 radials, watch for sidewall cracking, tread separation, bulges, cuts, and slow air loss, especially if the Tiara spends long periods parked.

Collector cars often age their tires by time and storage conditions more than by mileage. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the rubber. It also pays to inspect the tires before every longer outing, because a vehicle that looks fine in the garage can still have age-related tire issues.