The 1949 AC Saloon comes from a period when British postwar cars still carried much of their prewar engineering character, with narrow tires, upright proportions, and a strong emphasis on mechanical elegance rather than excess. For collectors and restoration-minded owners, that makes tire choice an important part of how the car looks and feels on the road. This model uses a 550-17 bias-ply tire on a 17-inch rim, keeping the fitment squarely in traditional vintage territory. Available options include blackwall, wide whitewall, and double-whitewall presentations within the same period-style series. The key decision is usually preserving the right vintage look while confirming wheel condition and overall road readiness.
Which Tire Size Is Right for The 1949 AC Saloon
The 1949 AC Saloon uses one primary tire size: 550-17. It is a bias-ply fitment for a 17-inch rim, and the covered 2-Liter sub-model uses that same size. With the fitment itself being straightforward, the real choice becomes selecting the sidewall style that suits the car's appearance and restoration direction while staying with the proper vintage construction.
A 550-17 size is a vintage numeric bias-ply designation in which the 550 represents an approximate 5.50-inch nominal section width and the 17 refers to the wheel diameter in inches. On the 1949 AC Saloon, this is a traditional bias-ply fitment that matches the car's period character and narrow-tire stance. Available choices in this size include BFGoodrich Silvertown Classic Bias Ply tires in blackwall, wide whitewall, and double-whitewall styles. That makes 550-17 the size to evaluate when the goal is maintaining proper vintage proportions while choosing the sidewall presentation that best suits the car.
Fitment is straightforward for the covered 1949 AC Saloon sub-model. The 2-Liter uses the same primary tire size, so the focus shifts from size differences to choosing the right bias-ply tire style and confirming the condition of the wheels before road use.
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1949 AC Saloon 2-Liter
The 1949 AC Saloon 2-Liter uses the same 550-17 bias-ply fitment as the model core, so there is no separate sub-model tire-size split to sort out. Tire selection is mainly about preserving the car's vintage look with the preferred blackwall or whitewall treatment while staying with the correct 17-inch rim setup.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1949 AC Saloon Tires for Sale
Available 550-17 options center on BFGoodrich Silvertown Classic Bias Ply tires. The main comparison points are sidewall treatment and presentation, with blackwall, wide whitewall, and double-whitewall choices all built in the same traditional bias-ply construction for 17-inch fitment.
These FAQs focus on the 1949 AC Saloon's 550-17 fitment, 17-inch rim use, bias-ply construction, available sidewall styles, restoration-minded selection, and the basic wheel and tire checks that matter before putting a collector car back on the road.
Tire Size & Fitment
What tire size fits a 1949 AC Saloon?
The 1949 AC Saloon uses a 550-17 tire size. This is a vintage numeric bias-ply designation, and it is the primary fitment for the model covered here.
That means the first step is not sorting through multiple primary sizes, but confirming that the car still has the correct 17-inch wheels for this fitment. On an older collector car, it is also wise to verify that the wheels, brakes, and suspension have not been altered in a way that changes clearance or tire requirements.
What size rim does a 1949 AC Saloon use?
The 1949 AC Saloon uses a 17-inch rim with its 550-17 tire size. That rim diameter is part of the tire designation, with the final number identifying the wheel diameter in inches.
Wheel diameter is one of the most important fitment checks on a vintage car because a correct tire size still cannot be mounted on the wrong rim size. It also helps to inspect the wheel itself for age, damage, corrosion, and past repairs before mounting new tires, especially on a low-use restoration or survivor.
What does 550-17 mean on a 1949 AC Saloon?
On a 1949 AC Saloon, 550-17 is a numeric bias-ply tire size. The 550 refers to an approximate 5.50-inch nominal section width, and the 17 refers to the wheel diameter in inches.
This older sizing format is different from modern metric radial sizing, so it helps to read it as a period tire code rather than expecting current-style width and aspect-ratio markings. For the buyer, that makes construction type and wheel size just as important as the size code itself when selecting a proper replacement tire.
Choosing the Right Tire
What should I consider when choosing a 550-17 tire for a 1949 AC Saloon?
Start with the correct primary size and construction: 550-17 in bias-ply form on a 17-inch rim. From there, the meaningful choices are the tire's visual presentation and whether the product suits the kind of restoration or road use planned for the car.
For this AC Saloon, available options stay within the BFGoodrich Silvertown Classic Bias Ply line, so the main selection difference is sidewall style rather than a change in overall fitment concept. It helps to match the tire's appearance to the car's finish, trim, and intended presentation while also confirming that the wheels are sound and properly sized.
What sidewall styles are available for 1949 AC Saloon tires?
The 1949 AC Saloon's 550-17 tire size is available in blackwall, wide whitewall, and double-whitewall styles. Each version keeps the same basic vintage bias-ply construction while changing the look of the sidewall.
That gives the owner some flexibility in how formal or understated the car appears without moving away from the correct size category. A blackwall tends to keep the presentation more restrained, while whitewall treatments create a more dressed, restoration-oriented look. The best choice depends on how the car is being finished and how closely the owner wants to follow a period-style appearance.
What brands offer tires for the 1949 AC Saloon?
The available 550-17 tires for the 1949 AC Saloon are offered under the BFGoodrich brand. They are part of the Silvertown Classic Bias Ply series and are available with different sidewall treatments.
Since the brand choice here is straightforward, the comparison shifts to details such as blackwall versus whitewall presentation and the overall look that best suits the car. Buyers should also compare practical basics such as construction type, wheel compatibility, and the condition of the existing rims instead of focusing on brand alone.
Restoration & Appearance
Which tire should I choose for a period-style 1949 AC Saloon?
A period-style 1949 AC Saloon starts with the correct 550-17 bias-ply size on a 17-inch rim. That keeps the car in the traditional tire format that suits its postwar vintage character and narrow original-style proportions.
From there, the visual choice comes down to sidewall treatment rather than changing the fitment concept. Blackwall, wide whitewall, and double-whitewall versions all create different impressions, so the right option depends on the restoration's intended look. If exact historical originality matters, marque-specific references and period photographs are worth consulting before settling on a sidewall style.
How does tire construction affect the appearance of a restored 1949 AC Saloon?
Tire construction matters because a 550-17 bias-ply tire gives the 1949 AC Saloon the narrow, upright visual character associated with cars of its era. On a restored vehicle, that construction contributes to the overall period-style stance as much as the sidewall design does.
Appearance is only part of the decision, but it is an important one on a collector car where the tire helps define the finished look. A restoration-minded owner usually wants the tire size, shape, and sidewall treatment to complement the body and wheel design, not overpower it or make the car look visually out of period.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1949 AC Saloon?
Yes, modifications can affect tire fitment on a 1949 AC Saloon even when 550-17 is the correct original-style size category. Changes to wheel diameter, wheel width, suspension height, brake components, or body clearance can all alter what works safely and cleanly on the car.
That is why an older vehicle should be checked as it sits today rather than assumed to match its original configuration. A car with replacement wheels or suspension work may need extra attention to clearance at the fenders and steering components, and any change from the standard setup should be evaluated before mounting new tires.
What should I inspect before driving a 1949 AC Saloon on new tires?
Before driving a 1949 AC Saloon on new tires, inspect the wheels for damage or corrosion and make sure the 17-inch rims are appropriate for the 550-17 fitment. The rest of the basic road-use check should include valve stems, lug hardware, tire pressure, and visible clearance around suspension and body components.
A collector car also deserves a broader once-over before it returns to regular road use. Steering and suspension wear, brake condition, wheel bearing health, and any signs of rubbing or contact are worth checking early. Catching those issues before driving helps the new tires wear properly and keeps the car feeling settled on the road.
How should 550-17 tires on a collector 1949 AC Saloon be maintained?
550-17 tires on a collector 1949 AC Saloon should be maintained with regular pressure checks, visual inspections, and careful storage habits. Look for cracking, cuts, bulges, uneven wear, or slow air loss, especially if the car spends long periods parked between drives.
Storage conditions matter because heat, direct sunlight, moisture, and ozone exposure can shorten tire life on low-mileage classics just as surely as road wear can. It also helps to move the car periodically and inspect the tread and sidewalls before each outing, since a seldom-driven vintage car can develop tire issues that are easy to miss.
