1968 Aston Martin DB Tires

The 1968 Aston Martin DB uses two primary tire sizes: 185R15 in radial construction and 775-15 in bias-ply construction. Both sizes are associated with 15-inch rims, so the fitment decision centers on construction type and tire style rather than moving to a different wheel diameter.

Choosing between them depends on how the car is equipped now and what kind of presentation is desired. A car kept in a more traditional period-style format may stay with 775-15 bias-ply tires, while a radial-based setup points toward 185R15. It is worth confirming the actual wheel width and the current tire setup before selecting between those two fitment paths.

The 1968 Aston Martin DB uses a 15-inch rim diameter with both primary tire sizes on this page. That applies whether the car is fitted with 185R15 radial tires or 775-15 bias-ply tires, so wheel diameter remains consistent across the two main fitment choices.

Rim diameter is only part of the check, because available tires in these sizes can call for different wheel-width ranges. Before changing construction or selecting a different tire series, confirm the actual width of the wheels on the car. That is especially important if the DB has been restored, re-wheeled, or converted from one tire type to the other at some point in its life.

775-15 is a vintage numeric bias-ply size. The 7.75 portion refers to the nominal section width in inches, and the 15 identifies the rim diameter. On a 1968 Aston Martin DB, it represents the traditional bias-ply fitment path rather than the Euro-metric radial 185R15 option.

That matters because a 775-15 tire brings a different construction and visual character than a radial, even though both fitment paths use 15-inch wheels. Buyers looking at this size should think beyond the number itself and compare sidewall treatment, tire series, and wheel-width suitability. It is also the size with several radial-equivalent alternatives, which can be useful when considering a construction change.

On the 1968 Aston Martin DB, 775-15 is a bias-ply tire size. It is the traditional numeric format used on many period cars, and it differs from the DB's 185R15 radial fitment both in construction and in the kind of sidewall treatments commonly offered in that size.

That distinction affects both appearance and selection. A buyer comparing 775-15 options will find bias-ply offerings in blackwall, narrow whitewall, redline, goldline, blue dot, and raised white letter blue streak styles. Before changing to a radial alternative, confirm wheel width and the car's current setup so the new tire is being evaluated against the actual wheel and clearance conditions, not just the shared 15-inch diameter.

Radial equivalents for 775-15 include 195R15 as an 80-series metric radial, P205/75R15 as a P-metric 75-series radial, P215/70R15 as a P-metric 70-series radial, and 670R15 as a bias-look radial. These give the 1968 Aston Martin DB several different radial-format alternatives tied to the original bias-ply size.

Each of those equivalents should be treated as an alternative to evaluate, not as an automatic replacement. The associated rim-width range for these equivalents is 5 to 7 inches, which makes wheel-width confirmation especially important. Comparing wheel compatibility, tire dimensions, and clearance at the front suspension and bodywork is the sensible next step before changing from 775-15 bias-ply tires to any radial equivalent.

Either approach can make sense on a 1968 Aston Martin DB because both a primary radial size, 185R15, and a primary bias-ply size, 775-15, are used on this car. The decision usually comes down to whether the priority is a more traditional period-style presentation or a radial-based setup in a classic 15-inch fitment.

Bias-ply tires generally appeal to buyers focused on vintage appearance and sidewall style, while radial choices broaden the path toward Euro-metric and equivalent sizing. The best decision starts with the wheels already on the car, the way the DB will be driven, and the look that suits the restoration. Keeping those three factors aligned usually leads to a more satisfying tire choice than construction alone.

Start with the two correct fitment paths for the 1968 Aston Martin DB: 185R15 radial or 775-15 bias-ply, both on 15-inch rims. From there, compare the construction, wheel-width suitability, sidewall treatment, tire series, and any load information attached to the specific tire being considered.

A restoration-oriented car may call for one visual direction, while a road-driven grand tourer may point toward another. It also helps to look at how the car is currently configured, since wheel changes over time can affect which tire is the better match. The best comparison is between tires in the correct fitment path that also suit the car's intended use and presentation.

Sidewall choices for the 1968 Aston Martin DB are broad. Across the available 185R15 and 775-15 tires, options include blackwall, narrow whitewall, redline, goldline, blue dot, and raised white letter blue streak treatments. That gives the DB owner room to move between understated touring looks and more visibly period-style presentations.

The right sidewall depends on the direction of the car rather than on appearance alone. A subtle blackwall or narrow whitewall can suit a restrained grand touring look, while redline, goldline, or specialty sidewalls push the car toward a stronger vintage statement. Since sidewall treatment does not override fitment, make size, construction, and wheel compatibility the first decision and let style follow from there.

Tires for the 1968 Aston Martin DB are available from several brands across its two main fitment paths. In 185R15 radial form, choices include Coker Classic, Michelin, Avon, and Universal Vintage Tire. In 775-15 bias-ply form, options include BFGoodrich, Firestone, and Goodyear.

Brand matters most when it comes to the tire series, sidewall styles, and sizing details each one brings to the table. Some buyers will be drawn to a particular look, while others will focus first on staying within a specific construction type. Comparing brands is most useful after narrowing the decision to the correct size and construction for the car's current wheels and the way the DB is meant to be used.

A period-style 1968 Aston Martin DB usually starts with deciding whether the car should present as a traditional bias-ply car or as a classic radial-equipped grand tourer. The 775-15 bias-ply size offers the strongest vintage visual range, while 185R15 keeps the car in a classic radial format with more restrained sidewall options.

That choice should follow the restoration goal rather than trend alone. Buyers aiming for a distinctly late-1960s tire look may spend more time with the 775-15 offerings, especially where stripe or whitewall treatment matters. When exact originality is important, compare the chosen size and style against marque-club references or other vehicle-specific historical sources instead of assuming any currently available sidewall treatment is exact.

Tire construction changes the visual character of a restored 1968 Aston Martin DB as much as it changes the size format on the sidewall. A 775-15 bias-ply setup gives the car a more traditional vintage presentation, while a 185R15 radial keeps a classic look but in a more modern construction style.

That difference becomes more noticeable once sidewall styling is added to the picture. Bias-ply options in this application include several period-style treatments such as redline, goldline, and whitewall variations, while the radial side tends to be more restrained. Matching construction to the restoration theme usually produces a more coherent result than selecting a sidewall style first and hoping the construction choice will follow naturally.

Yes, modifications can affect tire fitment on a 1968 Aston Martin DB even when the tire size itself is correct. Aftermarket wheels, changes in wheel width, altered offset, suspension work, or body and fender changes can all influence how a 185R15 or 775-15 tire sits and clears the car.

That is why an owner should check the actual wheel and chassis setup before assuming a familiar size will behave the same way on every car. Clearance at full steering lock, suspension travel, and the relationship between the tire and the wheel opening all matter. Modified cars need a real-world fitment check, especially when changing from bias-ply tires to radials or vice versa.

Before driving a 1968 Aston Martin DB on new tires, inspect the wheels for correct diameter and width, confirm the tires are seated properly, and verify inflation pressure against the tire being used. It is also wise to look over suspension and steering components so the new tires are not being introduced to a car with obvious mechanical issues.

A short, careful road test is a smart follow-up after installation. Watch for rubbing, unusual steering feel, vibration, or signs that the tire is too close to suspension or bodywork. Collector cars that have sat for long periods deserve extra attention here, since stale bushings, uneven ride height, or old wheel hardware can complicate an otherwise correct tire installation.

Tires on a collector 1968 Aston Martin DB should be checked regularly for pressure loss, tread wear, sidewall cracking, cuts, bulges, and any sign of age-related deterioration. Even a car driven only occasionally still needs inspection, because long storage can be just as hard on tires as regular road use.

Storage conditions matter nearly as much as mileage on a classic grand tourer like this. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires between drives. It also helps to inspect the tires before longer trips rather than assuming low annual mileage means they are road-ready, especially on a car that may spend much of its life parked.