Allard Jag Tires

The Allard Jag uses two listed tire sizes across its 1958 and 1959 production years: 590-15 and 600-15. Both are numeric bias-ply sizes for 15-inch rims. The 590-15 products are built for 15-inch wheels and generally suit 4.00 to 4.50 inch rim widths, while the 600-15 products are also for 15-inch wheels and span roughly 4.00 to 5.00 inch rim widths depending on the specific tire.

That means the key decision is not model year alone, because both sizes appear in both years. Check the size stamped on the existing tire if it is known to be correct, then compare wheel width and overall clearance so the replacement matches the car’s present configuration and restoration goals.

On an Allard Jag, 590-15 is a period numeric bias-ply size code. The 590 portion represents a nominal section width of about 5.90 inches, and the 15 identifies a 15-inch rim diameter. It is not a modern metric radial designation, so the code reads more simply than a contemporary size but still reflects an older tire sizing system used on mid-century sports and touring cars.

Knowing how to read the code helps when comparing one period-style tire to another. On an Allard Jag, the practical next step is making sure the wheel itself matches the intended rim width range and that the car has enough clearance for the size chosen, especially if a previous owner changed tires or wheels long ago.

A 1958 Allard Jag has two listed tire sizes because both 590-15 and 600-15 were used in that model year. The split is not a rim-diameter change, since both sizes fit 15-inch wheels, and it is not a construction split because the available products are all bias-ply. In practical terms, the difference is a same-year fitment variation centered on tire width and wheel compatibility.

That is why year alone is not enough to identify the correct tire. Measure the wheel width, review any surviving factory or restoration records, and look at the car’s current clearances and intended appearance so you choose the size that suits the specific Allard Jag rather than the calendar year only.

The listed Allard Jag tires are all numeric bias-ply designs, and for this type of fitment a tube is required. Both 590-15 and 600-15 are offered in bias-ply construction only, which follows the period-correct approach for a late-1950s specialist sports car using these older size conventions.

When replacing tires on an Allard Jag, treat tubes, flaps if required by the wheel type, and overall wheel condition as part of the job rather than as afterthoughts. A clean, properly prepared rim and the correct tube setup help preserve ride quality, reduce mounting issues, and keep the installation in line with collector-car practice.

A 1959 Allard Jag may use either 590-15 or 600-15, and both fit 15-inch wheels. The right choice comes from confirming the wheel width, checking any surviving period paperwork tied to the car, and comparing the existing setup if it is known to be correct. The 590-15 products suit narrower wheel widths overall, while 600-15 can cover a slightly broader range depending on the tire.

Start with the wheel itself, because the wheel often settles the question faster than the model year. Once the width is known, choose the size that matches the wheel and the look you want, whether that means a slightly narrower period sports-car stance or the fuller section width associated with the 600-15 size.

Allard Jag tires are available in both blackwall and wide whitewall form within the listed sizes. The 590-15 offerings include blackwall and a 2.625 inch wide whitewall, and the 600-15 offerings also include blackwall and a 2.625 inch wide whitewall. That gives restorers a meaningful appearance choice while staying within period-style bias-ply construction.

Blackwall is the more restrained sporting look and often suits an Allard Jag’s competition-flavored character. Wide whitewall can be appropriate when the goal is a more formal late-1950s presentation, so the best choice depends on the specific restoration style, period photos, and how the individual car was finished.

The listed Allard Jag tire options come from BFGoodrich and Avon. BFGoodrich appears in both 590-15 and 600-15, while Avon appears in the 590 size with the Turbospeed Mk4. All of the listed options remain within a period-style bias-ply approach rather than introducing a radial alternative for this application.

Brand choice on an Allard Jag often comes down to balancing visual authenticity, tread style preference, and the exact size needed. Once the correct size is settled, compare the available sidewall treatments and series names so the final tire choice matches the car’s intended use and restoration personality.

The listed Allard Jag products include BFGoodrich Silvertown Classic Bias Ply and Avon Turbospeed Mk4 series. Both are bias-ply tires in period-style sizing, but they represent different product families and visual personalities within that older construction type. The BFGoodrich offerings cover both listed sizes, while the Avon Turbospeed Mk4 appears in the 590-size range.

For an Allard Jag, the series decision is usually about the character of the restoration rather than a basic fitment change. After you establish the proper size, compare the available series alongside sidewall style and overall appearance so the tire supports either a more sporting look or a more formal period presentation.

A stored Allard Jag should be kept in a cool, dry, dark space with the tires protected from sunlight, ozone sources, and major temperature swings. Keep the tires at appropriate pressure for storage, avoid long-term contact with oil or solvents, and move the car periodically or support it so one part of each tire is not carrying the load month after month.

Bias-ply collector tires benefit from careful storage because flat-spotting, sidewall stress, and age-related deterioration can develop even when mileage stays low. If the Allard Jag sits for extended periods, a regular routine of inspection, repositioning, and basic climate control will do more for tire life than simply leaving the car untouched.

Tires on an Allard Jag should be inspected before every meaningful drive and more thoroughly at regular seasonal intervals. Look for cracking, cuts, tread separation, uneven wear, sidewall distortion, loss of pressure, and any signs that the tube or rim may be causing trouble. On a lightly used collector car, time and storage conditions matter as much as mileage.

That inspection routine is especially important on a specialty sports car with bias-ply tires, because old alignment issues, wheel damage, or long storage periods may not become obvious until the car is in motion. A few minutes in the garage can prevent an avoidable roadside problem and help preserve both the tires and the car.

Tires on an Allard Jag should be replaced when age, cracking, hardening, vibration, or structural concerns begin to appear, even if the tread still looks usable. Collector-car tires often age out before they wear out, and a low-mileage bias-ply tire can still become unsuitable for road use simply through time, storage conditions, or internal deterioration.

If the car has been parked for years, treat the tires as components that need evaluation rather than assuming good tread equals good serviceability. Replacement is the right call when the tires no longer inspire confidence in inspection, ride quality, or casing condition, particularly on a powerful and uncommon car like the Allard Jag.

The listed period-style fitments for the Allard Jag are 590-15 and 600-15, both in bias-ply construction on 15-inch rims. Available series include BFGoodrich Silvertown Classic Bias Ply and Avon Turbospeed Mk4, but those current offerings should not be read as a single original-equipment claim for every car. The short production run and specialist nature of the model make individual history especially important.

For restoration work, use the listed sizes as the starting point and then compare them against surviving factory literature, old photographs, ownership history, and marque-club knowledge. On an Allard Jag, getting the exact size and visual style right can matter just as much as choosing a respected period-style brand.

Correct tire fitment can absolutely affect the presentation, judging credibility, and market perception of an Allard Jag. Size, construction type, and sidewall style all contribute to whether the car looks and sits as a knowledgeable enthusiast expects. On a rare specialty car, obvious tire mismatches can distract from otherwise strong restoration work.

That does not always mean every owner needs the same cosmetic outcome, but it does mean the tire choice should match the restoration’s purpose. If the Allard Jag is being prepared for formal judging, use marque references and period imagery to settle details such as blackwall versus wide whitewall and the proper numeric size.

Allard Jag restoration choices in the listed range include blackwall and 2.625 inch wide whitewall styles. Both appear in the available period-style bias-ply offerings, so the right answer depends on the look of the specific car rather than one universal rule. Blackwall typically reads as more sporting, while wide whitewall creates a more dressed late-1950s appearance.

The most accurate path is to match the sidewall style to the car’s individual history, trim presentation, and restoration goal. A competition-influenced Allard Jag may look more convincing on blackwalls, while a more formal road-going presentation can justify wide whitewalls if that appearance aligns with period evidence.

Period-style bias-ply tires can be suitable for public-road use on an Allard Jag when they are correctly sized, properly mounted, in sound condition, and paired with a car that has been mechanically sorted. They are not modern high-performance radials, so expectations should remain rooted in the behavior of a late-1950s sports car on bias-ply construction.

The practical takeaway is to treat the whole package as a system. Good brakes, steering, suspension, alignment, wheel condition, and tire pressure matter just as much as tread, and a freshly restored Allard Jag should be driven cautiously until the owner understands how the car responds on its chosen tires.

Before driving an Allard Jag, check tire pressure, visible sidewall condition, tread condition, wheel security, and any signs of tube-related air loss. Also look for flat spotting from storage, cracks around the bead area, or rubbing marks that suggest the tire size and wheel combination need a closer look.

Because the Allard Jag is a low-volume collector car with period-style bias-ply tires, a brief pre-drive inspection is part of responsible ownership rather than an optional ritual. It is also wise to bring the car up to speed gradually on each outing so any vibration, pull, or brake issue shows itself before the drive becomes demanding.

An Allard Jag on period-style bias-ply tires should be driven at moderate, sensible road speeds that respect the limits of vintage tire construction and the condition of the individual car. Even when the car itself is capable, older-style tires do not deliver the same reserve grip, tracking, or heat tolerance a driver might expect from modern performance rubber.

The best approach is to build speed gradually and let the car’s stability, steering response, and overall condition set the pace. A well-prepared Allard Jag can be enjoyed on the road, but it should be driven in a way that reflects its age, tire type, and collector status rather than pushed like a modern sports car.