1962 Daimler SP 250 Tires

The 1962 Daimler SP 250 is associated with two primary tire sizes: 590-15 in bias-ply construction and 165R15 in radial construction. Both sizes use a 15-inch rim, so the main distinction is not wheel diameter but the tire type and sizing system chosen for the car.

That means the best choice depends on how the car is set up and what the owner wants from it. A 590-15 suits a period-style bias-ply approach, while 165R15 opens up a much wider range of radial options. Before selecting either one, confirm the actual wheel width on the car and make sure the current suspension and clearance conditions support the intended tire.

The 1962 Daimler SP 250 uses a 15-inch rim diameter with both of its primary tire sizes, 590-15 and 165R15. Even though the tire sizing formats are different, both fitments are built around the same basic 15-inch wheel diameter rather than separate wheel sizes.

Rim diameter is only the first part of the fitment check, especially on a vintage sports car. Wheel width still matters, and the available tires in these sizes do not all share the exact same approved rim-width range. If the car has replacement wheels or older rims of uncertain specification, measuring the wheel before choosing between bias-ply and radial options is the sensible next step.

590-15 is a vintage numeric bias-ply tire size. The 590 portion is the old nominal section-width designation used in classic inch-based sizing, and the 15 identifies the rim diameter in inches. On a 1962 Daimler SP 250, it represents the bias-ply fitment path rather than a modern metric radial format.

That distinction matters because a 590-15 should be selected as a bias-ply size first, not treated like a modern radial code with the same dimensions assumed. Owners considering a change from 590-15 to a radial alternative should compare the wheel width, the intended appearance of the car, and the available clearance around the fenders and steering components before making the switch.

590-15 is the bias-ply tire size associated with the 1962 Daimler SP 250. It uses a vintage numeric sizing format and is offered in bias-ply construction, including blackwall and wide whitewall versions, which makes it the traditional-looking fitment choice for this car.

Choosing 590-15 usually comes down to preserving period-style construction and appearance. A bias-ply tire can present the car differently than a radial, both visually and in general road feel, so owners should decide whether they want that traditional setup or a radial-based alternative. Wheel width and overall vehicle condition still need to be verified before mounting any replacement tire.

Radial equivalents for 590-15 include 165R15 as the 80-series metric radial equivalent, P165/75R15 as the P-metric 75-series radial equivalent, and P175/70R15 as the P-metric 70-series radial equivalent. A bias-look radial equivalent is not part of the available equivalent set for this size.

These equivalents offer different sizing conventions and profile families, not automatic interchangeability. The recommended rim-width range tied to this comparison is 4 to 5 inches, which makes wheel-width verification especially important. It is also worth checking the car's current ride height, fender clearance, and steering clearance before choosing a radial alternative to the original 590-15 bias-ply size.

A 1962 Daimler SP 250 can be approached either way, because it is associated with both 590-15 bias-ply and 165R15 radial fitments. Bias-ply suits owners pursuing a more traditional presentation, while radial choices in 165R15 bring a broader assortment of brands, sidewall styles, and tire series on the same 15-inch rim diameter.

The better choice depends on how the car will be used and what matters most to the owner. A restoration-minded car may favor the vintage look of a bias-ply tire, while a regular driver may be evaluated around radial options. In either case, the actual wheel width, suspension condition, and the car's present setup should be confirmed before settling on one construction type.

Start with the two basic fitment paths for the 1962 Daimler SP 250: 590-15 bias-ply or 165R15 radial, both on a 15-inch rim. After that, compare construction type, approved rim-width range, sidewall style, load specification where stated, and whether the tire's overall look matches the car's intended character.

A traditional restoration may lean toward a bias-ply blackwall or wide whitewall, while a more road-focused setup may center on the wider radial selection. It also helps to think about how the car is actually used, whether for show, fair-weather touring, or longer drives. Matching the tire to the wheel and the owner's priorities usually matters more than simply picking the first size that appears correct.

Sidewall choices for the 1962 Daimler SP 250 include blackwall, narrow whitewall, and wide whitewall, depending on the tire size and series selected. The 165R15 radial size offers the widest variety of sidewall treatments, while 590-15 bias-ply options include blackwall and wide whitewall versions.

That gives owners room to shape the car's appearance without changing the basic 15-inch fitment. Blackwalls usually create the cleanest sporting look, while whitewalls push the presentation toward a more formal or distinctly period-oriented style. Sidewall treatment should still be chosen only after confirming the right size and construction, since appearance alone should not override wheel compatibility or fitment needs.

Tire choices for the 1962 Daimler SP 250 include BFGoodrich, Avon, Coker Classic, American Classic, Firestone, Michelin, and Vredestein. Those brands appear across the two primary fitment paths, with 165R15 carrying the broader radial assortment and 590-15 covering the more traditional bias-ply side of the selection.

Brand alone should not decide the purchase. It makes more sense to narrow the choice by correct size and construction first, then compare the available series, sidewall treatments, and wheel-width compatibility within that group. On a car like the SP 250, the right visual style and the intended use of the vehicle are often just as important as the name molded into the sidewall.

For a period-style 1962 Daimler SP 250, the 590-15 bias-ply fitment is the natural starting point because it preserves the vintage numeric sizing format and traditional construction associated with this car. That size is available in blackwall and wide whitewall versions, giving some flexibility without moving away from the bias-ply presentation.

The best restoration choice depends on how strictly the car is being interpreted and what visual character is desired. A blackwall can keep the look more restrained, while a whitewall changes the overall presentation noticeably. When exact originality matters, it is wise to compare the tire choice against marque-club guidance, period photography, or other vehicle-specific historical references before making a final decision.

Tire construction changes more than ride characteristics on a restored 1962 Daimler SP 250; it also changes how the car sits visually and how authentic the overall presentation feels. A 590-15 bias-ply keeps the car in a more traditional vintage format, while a 165R15 radial introduces a more modern construction even when the size still looks appropriate on the car.

That visual difference becomes more important as the restoration gets more detail-oriented. Sidewall profile, whitewall treatment, and the general stance of the tire can all influence whether the finished car reads as strictly period-style or more road-use oriented. Owners balancing authenticity and drivability usually benefit from deciding on construction early, before narrowing the choice to a specific series or sidewall style.

Modifications can absolutely affect tire fitment on a 1962 Daimler SP 250, even when the tire size itself is appropriate. Changes such as aftermarket wheels, altered wheel width, suspension work, ride-height changes, or body and fender repairs can all influence whether a 590-15 or 165R15 setup still has the clearance it should.

That is why an older sports car should be checked as it sits today rather than assumed to match its original configuration. A tire that suits the car on paper may still need confirmation around steering sweep, inner clearance, and wheel specification. Measuring the actual wheels and inspecting the current suspension and body relationship is the safest way to avoid fitment surprises.

Before driving a 1962 Daimler SP 250 on new tires, inspect the wheels for correct diameter and condition, confirm that the beads seat properly, and make sure the tires clear the fenders and steering components through their full range of movement. It is also wise to check inflation, valve stems, lug torque, and the general condition of the suspension and steering system.

A vintage car often reveals fitment issues only once weight is on the suspension and the steering is turned lock to lock. A short, careful road test helps confirm that there is no rubbing, vibration, or pull. After the first drive, recheck pressure and give the tires another visual inspection so any early mounting or clearance issue is caught quickly.

Tires on a collector 1962 Daimler SP 250 should be maintained with regular pressure checks, visual inspections, and careful storage habits. Whether the car wears 590-15 bias-ply tires or 165R15 radials, it is important to watch for sidewall cracking, tread separation, cuts, bulges, uneven wear, and gradual air loss over time.

Low annual mileage does not eliminate tire aging, so condition matters as much as tread depth on a seldom-driven collector car. Keeping the vehicle away from prolonged sunlight, heat, moisture, and ozone sources can help preserve the tires between drives. It also helps to inspect them before every outing, especially if the SP 250 has been parked for extended periods.