1958 Allard Jag Tires

The 1958 Allard Jag uses two primary tire sizes: 590-15 and 600-15. Both are bias-ply tires sized for 15-inch rims, and both are associated with the Mark II Jaguar sub-model, so neither size should be treated as an automatic substitute without checking the car’s actual wheel and tire setup.

The practical step is to inspect the tires already on the car and confirm wheel width before selecting between the two sizes. On a collector sports car, a small change in vintage numeric sizing can affect appearance and fitment, so the right choice depends on what is mounted now, how the car sits, and whether the goal is restoration-style presentation or broader replacement flexibility.

The primary tire sizes used on the 1958 Allard Jag are built for 15-inch rims. That applies to both 590-15 and 600-15, so the rim diameter stays consistent even though the tire width designation changes between the two fitments.

Rim diameter is only part of the fitment picture on a vintage car. Wheel width should also be checked, especially if the car has been changed from its earlier setup or fitted with aftermarket wheels at some point. Confirming both diameter and width helps narrow the correct tire choice and reduces the risk of selecting a size that changes the car’s stance or clearance unexpectedly.

The covered 1958 Allard Jag Mark II Jaguar can use both 590-15 and 600-15 bias-ply tires. That means fitment stays within the same general 15-inch vintage tire family, but it does not reduce the selection to one single size across every car in the field.

That distinction matters because many surviving specialty cars have been restored, re-wheeled, or set up differently over time. A buyer should confirm the exact tire size currently fitted, then compare wheel width and visual clearance before choosing a replacement. On a low-production sports car, the tire already on the car often tells more about practical fitment than model-level shorthand alone.

For the 1958 Allard Jag, 590-15 is a primary bias-ply tire size. In vintage numeric sizing, the 590 designation refers to nominal section width and the 15 identifies rim diameter, so this is part of the car’s original-style tire language rather than a modern radial size format.

That matters because staying with bias-ply construction helps preserve the car’s traditional appearance and period-style tire profile. Buyers considering a construction change should treat that as a separate decision from size selection, since a radial equivalent uses a different sizing convention and still needs to be checked against wheel width, dimensions, and the way the car is actually set up today.

Radial equivalents for 590-15 include 165R15 as an 80-series metric radial, P165/75R15 as a 75-series P-metric radial, and P175/70R15 as a 70-series P-metric radial. Those three options give the 1958 Allard Jag buyer a range of modern radial sizing formats without changing away from a 15-inch rim diameter.

Each equivalent should be viewed as an alternative, not an automatic interchange. The recommended rim-width range is 4 to 5 inches, which makes wheel verification especially important before a conversion. Clearance around the fenders and suspension also deserves attention, since this is a compact specialty sports car where small fitment differences can matter more than they would on a larger sedan.

Start by confirming the original tire size on the car, then match any radial alternative to the same 15-inch wheel diameter and an appropriate wheel width. For the 590-15 and 600-15 fitments, radial equivalents include 165R15, P165/75R15, and P175/70R15, with a recommended rim-width range of 4 to 5 inches.

The rest of the evaluation should focus on the actual vehicle setup. Check steering and fender clearance, suspension condition, and whether the car still has its original wheel package. A collector car that has been altered over time can react differently to a radial conversion, so the goal is to verify dimensions and compatibility first, then decide whether the change supports your appearance and road-use priorities.

The first consideration is selecting the correct primary size, since the 1958 Allard Jag uses both 590-15 and 600-15 in bias-ply construction on 15-inch rims. Once the size is confirmed, the next factors are wheel-width compatibility, sidewall style, product series, and whether the car is being kept in a traditional bias-ply format or evaluated for a radial equivalent.

A specialty car like this rewards careful matching rather than broad substitution. Buyers focused on restoration appearance may lean toward a classic bias-ply presentation, while regular road-use plans may lead to a closer look at radial alternatives. The best path is to compare the tire’s visual character, wheel requirements, and the way the car is actually driven, rather than choosing by size name alone.

The available sidewall styles for 1958 Allard Jag tires include blackwall and wide whitewall. Both appear within the correct vintage fitment range, and the choice changes the car’s visual tone considerably even when the overall tire size and bias-ply construction remain within the proper family.

Blackwall usually gives the car a cleaner, more understated sports-car presentation, while a wide whitewall introduces a more formal period look. Since this model sits at the intersection of sporting and coachbuilt character, the right appearance choice depends on how the car is restored and presented. It is worth comparing sidewall style only after the correct size and wheel compatibility have already been confirmed.

BFGoodrich and Avon both offer tires within the 1958 Allard Jag fitment range. BFGoodrich appears in 590-15 and 600-15 through the Silvertown Classic Bias Ply line, while Avon is represented in the 590-size range with the Turbospeed Mk4, giving the buyer more than one brand and series approach within the correct vintage format.

Brand choice should be part of a broader comparison rather than the entire decision. The more useful differences usually involve size, sidewall treatment, tire series, and wheel-width compatibility. On an uncommon collector car, the strongest result comes from choosing the tire that matches the vehicle’s setup and intended appearance, then using brand and series to narrow the final selection.

A period-style 1958 Allard Jag usually starts with one of its original-format bias-ply sizes, either 590-15 or 600-15, depending on the wheel and setup on the car. Staying in a vintage numeric bias-ply size preserves the tire’s traditional visual proportions and keeps the car closer to the look expected on a late-1950s specialty sports machine.

The final choice should reflect how the car is being restored and shown. Blackwall and wide whitewall options create different impressions, and neither should be treated as universally correct without marque-specific research. When exact originality matters, compare your car against period photos, build records, and knowledgeable Allard or Jaguar-specialist sources before settling on one sidewall treatment or one of the two available sizes.

Tire construction changes more than road feel on a restored 1958 Allard Jag; it also changes visual character. A bias-ply tire keeps the car in its original-era sizing language and tends to support the traditional look expected from a late-1950s sports car, especially when paired with an appropriate blackwall or wide whitewall treatment.

A radial equivalent can still be considered, but it introduces a more modern sizing format and potentially a different overall visual impression. Buyers focused on show presentation often begin with the correct bias-ply size, then evaluate sidewall style and brand. Buyers planning more road use may still compare radial alternatives, but appearance should remain part of the decision instead of an afterthought.

Yes, modifications can affect tire fitment on a 1958 Allard Jag even when the car stays within a 15-inch wheel diameter. Changes such as aftermarket wheels, altered wheel width, suspension work, ride-height changes, or body adjustments can influence whether 590-15, 600-15, or a radial equivalent remains the most appropriate choice.

That is especially important on a compact specialty car with tight packaging and handmade character. A buyer should inspect actual wheel width, look at steering and fender clearance through full movement, and compare the current tire size before ordering replacements. Even modest deviations from the car’s earlier setup can turn a historically correct size into a practical fitment question.

Before driving a 1958 Allard Jag on new tires, inspect the wheels for correct diameter and usable condition, verify that the tire size matches the car’s setup, and check inflation, bead seating, and general clearance. It also makes sense to look over suspension and steering components, since worn parts can mask or complicate a tire-fitment issue.

A short initial drive should be treated as a shakedown rather than a final verdict. Watch for rubbing, unusual steering response, vibration, and any sign of contact under turning or suspension movement. On a collector car that may have spent long periods parked, a fresh tire installation is also a good time to inspect brake condition and confirm that the car tracks consistently once back on the road.

Collector-car tires in 590-15 or 600-15 sizing should be maintained with regular pressure checks, periodic visual inspection, and careful storage habits. Even if tread wear is low, age and inactivity can be just as important as mileage on a 1958 Allard Jag, especially when the car spends much of its life parked between events or occasional drives.

Look closely for sidewall cracking, cuts, bulges, irregular wear, and slow air loss, and keep the car away from prolonged heat, direct sunlight, and ozone sources when stored. It also helps to move the car occasionally or store it in a way that reduces long-term flat spotting. Vintage specialty cars benefit from routine inspection long before any tire appears obviously worn.