Triumph Sedan Tires

The Triumph Sedan uses two listed tire sizes across the 1960, 1961, and 1962 model years: 145R13 and 520-13. The 145R13 size is a radial fitment on a 13-inch rim, while the 520-13 size is a numeric bias-ply fitment that also uses a 13-inch rim. Both sizes apply across the full year range rather than being split by model year.

That means the main choice is not early-versus-late production, but whether your Triumph Sedan is being set up with period-style bias-ply tires or with radial construction for a different driving feel. Start by checking the tire size already on the car, the wheel diameter, and whether the car is being restored for originality or prepared for regular road use.

On a Triumph Sedan, 520-13 is a numeric bias-ply tire size. The 520 figure represents the nominal section width with the decimal omitted, and the 13 indicates the rim diameter in inches. In the available Triumph Sedan fitments, 520-13 products are bias-ply tires intended for 13-inch wheels.

That size is the one to look at if your goal is a more period-correct appearance and the traditional response associated with bias-ply construction. It is also the size family on this page with the widest sidewall-style variety, so owners concerned with restoration character or visual stance should compare blackwall, narrow whitewall, and wide whitewall options carefully.

A 1960 Triumph Sedan has 145R13 and 520-13 listed because the fitment split is by construction type rather than by wheel diameter. Both sizes use 13-inch rims, but 145R13 is a radial metric size and 520-13 is a traditional numeric bias-ply size. The same two-size pattern continues through 1961 and 1962.

The practical question is whether your car should be kept in a more original-style bias-ply presentation or run on radial tires for a different on-road feel. If the car has already been fitted with one type for many years, inspect the wheels and overall setup before changing direction, especially if you are trying to preserve the stance and steering character you are used to.

The Triumph Sedan's 520-13 bias-ply fitment requires a tube. The 145R13 radial fitment is listed in tubeless-style sizing and is not presented the same way as the bias-ply option. Tube requirements therefore differ by which of the two listed size families your Triumph Sedan is using.

That distinction matters because a car restored around bias-ply tires should be set up accordingly, while a car running radial 145R13 tires may be configured differently. Before mounting new tires, check the wheel condition, valve hardware, and whether the car has been operating on tubes or tubeless radials, then keep the setup consistent across the axle and ideally across the full car.

The Triumph Sedan can be fitted with either bias-ply crossply tires in 520-13 or radial tires in 145R13, and both sizes are listed for 1960 through 1962. Bias-ply tires preserve a more period-correct look and response, while radial tires represent a more modern construction approach within the same 13-inch wheel diameter.

Choose crossply when authenticity, original-style stance, and traditional steering feel matter most. Choose radial when you want the Triumph Sedan to retain its 13-inch wheel fitment but behave more like a later road car in everyday driving. The best choice depends on whether the car is primarily a judged restoration, a show driver, or a regularly exercised collector car.

Yes, a Triumph Sedan fitted with 145R13 radial tires can feel different from one running 520-13 bias-ply tires, even though both fit 13-inch rims. The difference comes from construction type rather than wheel diameter. Radial and bias-ply tires flex and respond differently, which can influence steering feel, tracking, and overall ride character.

That matters if you are trying to preserve the period manners of a Triumph Sedan rather than simply keeping it mobile. Owners who value originality often prefer the more traditional response of a bias-ply setup, while drivers who use the car more frequently may prefer the behavior of radials. If the car has suspension, steering, or alignment issues, correct those first before judging the tire change.

A Triumph Sedan should be kept on one construction type rather than mixing 520-13 bias-ply crossply tires with 145R13 radial tires. Even though both fit 13-inch rims, they are different tire designs with different handling characteristics. Mixing them can make the car feel inconsistent under braking, cornering, and straight-line tracking.

The sensible approach is to choose one direction for the entire car and stay with it. If originality is the goal, keep the Triumph Sedan on a full set of bias-ply tires. If road use and a more modern feel are the priority, move to a full radial set. Matching tire type across all four corners is the cleanest way to preserve predictable behavior.

A 1961 Triumph Sedan has two listed tire sizes: 145R13 and 520-13, and both use 13-inch rims. The correct choice usually comes down to how the car is equipped now and whether it is being maintained as a period-style bias-ply car or a radial-equipped driver. Looking only at the model year is not enough, because the same two-size choice appears throughout 1960 to 1962.

Start with the wheel diameter, then check the existing tire size marking and the overall intent of the car. A restored Triumph Sedan often points toward 520-13 bias-ply tires, while a car set up for road use may already be running 145R13 radials. If the car has long been in one configuration, preserving that established setup usually avoids unnecessary fitment surprises.

Triumph Sedan tire options include blackwall, narrow whitewall, and wide whitewall styles. The 145R13 radial choices are blackwall, while the 520-13 bias-ply options include blackwall, narrow whitewall, and wide whitewall versions. That means sidewall appearance varies by both size and construction, not just by brand.

Blackwall is the straightforward choice if you want a restrained, factory-like appearance, especially with the radial fitments. Whitewall options in 520-13 give the Triumph Sedan a stronger custom or period accessory look, and they can change the car's visual character significantly. Decide on sidewall style early, because it is part of the car's presentation, not just a small finishing detail.

Triumph Sedan tires in these listed sizes are available from Michelin, Firestone, and Premium Sport. Michelin appears in the 145R13 radial fitment, Firestone appears in both 145R13 radial and 520-13 bias-ply fitments, and Premium Sport appears in 520-13 bias-ply form. That gives the Triumph Sedan owner a mix of traditional and more modern replacement approaches.

Brand choice should come after size, construction type, and visual style are settled. Once you know whether your Triumph Sedan needs 145R13 radial or 520-13 bias-ply tires, compare the available brands by sidewall style, series, and the overall character you want from the car. A restoration-minded owner and a regular road driver may end up choosing different brands for equally valid reasons.

The Triumph Sedan products on this page include Michelin XAS-FF, F560 Radial, Firestone Classic Bias Ply, and Premium Sport Lowrider series. Michelin XAS-FF and F560 Radial are radial constructions in 145R13, while Firestone Classic Bias Ply and Premium Sport Lowrider are bias-ply constructions in 520-13. The biggest distinction is therefore radial versus bias-ply rather than small cosmetic differences alone.

That series split gives you two different paths for the car. A radial series suits owners who want the Triumph Sedan to feel more settled in modern road use, while a bias-ply series better preserves period appearance and traditional response. Within the bias-ply options, sidewall treatment becomes an important secondary decision because it can shift the car from understated stock style to a more customized presentation.

A Triumph Sedan should be stored on a clean, dry surface away from direct sunlight, ozone sources, and large temperature swings. Keep the tires properly inflated for the size and construction fitted, and avoid leaving the car in one position for long periods if possible. Collector tires age as much from time and storage conditions as from mileage.

If the Triumph Sedan sits for extended stretches, move it occasionally or support it in a way that reduces long-term flat spotting and casing stress. Bias-ply and radial tires both benefit from careful storage, but a lightly used collector car especially needs routine attention because the tires may look fine while quietly aging. Good storage habits help preserve both appearance and drivability.

Tires on a Triumph Sedan should be inspected before each meaningful drive and more thoroughly at regular service intervals. Check inflation, sidewall condition, tread surface, valve area, and any signs of uneven wear or age cracking. On a collector car that is driven infrequently, visual inspection is especially important because problems can develop long before the tread is worn out.

A quick walkaround before driving can catch the issues most likely to interrupt a vintage car outing. If your Triumph Sedan runs bias-ply tires, also pay close attention to tube-related setup, bead seating, and how the tire sits on the wheel. Any sudden change in steering feel, vibration, or ride quality should trigger a closer inspection before the car goes back on the road.

A Triumph Sedan's tires should be replaced when age, cracking, hardening, separation, repeated air loss, or visible casing distress appear, even if the tread still looks usable. Tread depth alone is not a reliable measure on a collector car, because these vehicles often accumulate very low miles while the tires continue to age. Time and condition matter at least as much as wear.

That principle is especially important on a lightly used Triumph Sedan that spends long periods parked between drives. If the tire surface feels stiff, shows checking around the sidewall or tread blocks, or the car has developed persistent vibration, replacement deserves serious consideration. A collector car tire can reach the end of its safe service life while still looking presentable from a few feet away.

The Triumph Sedan listings include both 520-13 bias-ply tires and 145R13 radial tires for 1960 through 1962. That means there are at least two fitment approaches represented here: a traditional numeric bias-ply format and a metric radial replacement format. The available products do not point to one single original-equipment specification across every car in the series.

For a restoration, use the tire currently on the car only as a clue rather than final proof. The strongest references are factory literature, surviving original examples, and marque-club knowledge for the exact body and market specification. Once that is settled, choose the tire that best matches the intended appearance, construction type, and presentation standard for your particular Triumph Sedan.

Yes, correct tire fitment can affect both the judged presentation and the market impression of a Triumph Sedan. Size, construction type, and sidewall style all shape how authentic the car appears. A Triumph Sedan on period-looking 520-13 bias-ply tires presents differently from one on 145R13 radial blackwalls, even though both sizes are listed for the model years covered here.

Judging standards vary, so the best approach is to match the tire choice to the car's intended lane. Concours and preservation-minded cars usually benefit from era-appropriate sizing and appearance, while touring or driver-level cars may reasonably lean toward radial practicality. If the car will be shown, check with the relevant marque club or event standard before settling on sidewall style and construction.

Triumph Sedan tire options here include blackwall, narrow whitewall, and wide whitewall styles, but they are not spread evenly across both size families. The 145R13 radial fitments are blackwall, while the 520-13 bias-ply fitments include blackwall as well as narrow and wide whitewall versions. Sidewall choice therefore depends on both the look you want and whether the restoration leans radial or bias-ply.

For a restrained restoration, blackwall is usually the safest visual direction because it suits either a stock-style bias-ply look or a subtle radial replacement approach. Whitewall versions can be appropriate when they match the period presentation and regional style of the specific car. A well-restored Triumph Sedan benefits when the sidewall style feels intentional rather than simply decorative.

A Triumph Sedan can be driven on public roads when the tires are the correct size, in sound condition, properly mounted, and appropriate to the car's intended use. Both 145R13 radial and 520-13 bias-ply options are available, but safe road use depends on the full condition of the tire, wheel, suspension, and steering system rather than the size marking alone.

A roadworthy tire on a collector car still needs to be matched with realistic expectations. A Triumph Sedan is an early-1960s small saloon, not a modern highway appliance, so careful speeds and regular inspection remain part of safe use. If the car has been stored for a long time or has unknown mechanical history, have the whole running gear evaluated before putting meaningful road miles on it.

Before driving a Triumph Sedan, check tire pressure, visible sidewall condition, tread condition, and whether all four tires match in size and construction. A car on 520-13 bias-ply tires should also be checked for proper tube-based setup, while a car on 145R13 radials should be checked for general mounting and wheel condition. Any wobble, cracking, or air loss deserves attention before the car moves.

That pre-drive routine matters because collector cars often spend more time parked than driven. The first few miles after storage are when neglected issues tend to show themselves, especially if the car has older tires or has not been serviced recently. Add a quick look at the spare and basic roadside readiness, since a small vintage sedan is more enjoyable when simple preventable problems are handled in advance.

A Triumph Sedan should always be driven at speeds appropriate to the age, condition, and construction of the tires fitted, especially if it is running period-style 520-13 bias-ply tires. Even when the size is correct, an older collector car and its tires should be treated with more restraint than a modern car. Tire age, wheel condition, and the overall mechanical state of the car all matter.

The prudent approach is to build speed gradually and judge the car by how stable and composed it feels rather than assuming modern cruising capability. A Triumph Sedan used regularly on 145R13 radials may feel more settled than one on bias-ply tires, but that does not remove the need for caution. Smooth inputs, moderate speeds, and regular inspections are the right habits for preserving both safety and the car itself.