1998 Aston Martin Tire Fitment Guide

1998 Aston Martin vehicles use two tire sizes, and both belong to the DB7: 245/40R18 and 265/35R18. The 245/40R18 mounts on an 18-inch wheel and fits rim widths from 8.0 to 9.5 inches across the available street-oriented products, while the M&H version uses an 8.5-inch rim. The 265/35R18 also mounts on an 18-inch wheel and fits rim widths from 9.0 to 10.5 inches.

That means a 1998 Aston Martin buyer is usually dealing with a staggered setup rather than choosing between two interchangeable sizes. The first step is confirming whether you are replacing the front axle, the rear axle, or all four tires. Once that is clear, you can narrow the choice by brand, speed rating, and the kind of driving the car actually sees.

On a 1998 Aston Martin, 245/40R18 is a metric radial size. The 245 is the nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. In the DB7 application, it is the narrower of the two sizes used on the car.

That sizing format matters because it tells you more than overall fit. It helps confirm the intended proportions of the tire, the wheel diameter it mounts on, and whether the tire belongs at the front or rear of the DB7. If you are matching an existing set, compare the sidewall marking on the car before choosing a replacement.

On a 1998 Aston Martin, 265/35R18 is also a metric radial size. The 265 indicates a nominal section width of 265 millimeters, 35 is the aspect ratio, R means radial construction, and 18 is the wheel diameter in inches. This is the wider size used on the DB7 and suits the rear position.

For a DB7 owner, that extra width is part of the car’s staggered setup and should not be treated as a universal replacement for all four corners. Confirming the rear size before ordering avoids mounting a tire that belongs on the other axle. It also helps you choose a tire with the right rim-width range for your specific rear wheel.

A 1998 Aston Martin DB7 does not use 245/40R18 and 265/35R18 as an either-or replacement choice for the same wheel position. The 245/40R18 is the narrower front fitment, while the 265/35R18 is the wider rear fitment. Both are radial 18-inch sizes, so the decision is about axle position rather than choosing between an old-style and modern-style construction.

If you are replacing only two tires, match the size already used on that axle. If you are replacing all four, keep the staggered arrangement unless a marque specialist and your wheel setup support a different approach. The next useful comparison is product character within each size, such as ultra-high-speed street use versus a specialized drag-race application.

1998 Aston Martin tire options in these DB7 sizes are blackwall tires. The 245/40R18 and 265/35R18 are both available in blackwall form, which suits the understated performance appearance expected on a late-1990s grand touring car. There are no whitewall or wide-whitewall options in these fitments.

That makes the appearance decision fairly straightforward for most DB7 owners. The more meaningful differences come from brand, speed rating, and intended use rather than decorative sidewall treatment. If visual correctness matters to your restoration or presentation goals, blackwall keeps the look consistent with the period and the DB7’s original market character.

1998 Aston Martin DB7 sizes are covered by M&H Racemaster, BFGoodrich, and Nitto. In 245/40R18, choices come from M&H Racemaster, BFGoodrich, and Nitto. In 265/35R18, choices come from BFGoodrich and Nitto. All of these are radial blackwall tires, but their intended use differs by series.

For a DB7 owner, the practical takeaway is to start with the correct axle size and then decide how the car is driven. BFGoodrich and Nitto cover mainstream performance street use in both DB7 sizes, while the M&H Racemaster option in 245/40R18 is more specialized. A matched set from the same family can simplify appearance and road feel, but front and rear availability should guide the final choice.

On a 1998 Aston Martin DB7, 245/40R18 products fit 18-inch wheels with rim-width recommendations ranging from 8.0 to 9.5 inches, with one drag-race application centered on an 8.5-inch wheel. The 265/35R18 products fit 18-inch wheels with rim-width recommendations from 9.0 to 10.5 inches. Those ranges reflect the tire size itself as well as the way each product is engineered.

That is why wheel confirmation matters before replacing tires on a DB7, especially if the car has ever been changed from factory wheels to aftermarket wheels. A tire can share the correct diameter and still be outside the ideal rim-width window. Check the wheel width on the car and compare it with the specific tire you plan to use on that axle.

The available 1998 Aston Martin DB7 tires in 245/40R18 and 265/35R18 are tubeless radial designs. Their size markings use modern radial nomenclature without tube-type markings, and these products are intended for contemporary tubeless wheel-and-tire use. That fits the late-1990s design era of the DB7.

Even with tubeless tires, valve condition and wheel integrity still matter. If a DB7 has sat for long periods, inspect valve stems, bead seats, and wheel surfaces before mounting new tires. A clean wheel, proper mounting, and correct inflation practice do more for reliability than assuming every issue is strictly a tire problem.

A 1998 Aston Martin DB7 uses both tire sizes on 18-inch wheels, so the wheel diameter is compatible with both front and rear fitments. That does not mean the same wheel width should be used everywhere, because the 245/40R18 and 265/35R18 have different rim-width ranges. The narrower size suits the front range, and the wider size suits the rear range.

In practical terms, the original DB7 wheel arrangement should be treated as a matched staggered system. If the car still wears its correct wheel set, replacing tires by axle is straightforward. If the wheels have been swapped at some point, measure both front and rear wheel widths before selecting tires so the fitment stays within the recommended range for each size.

A 1998 Aston Martin should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Inflate the tires to an appropriate storage pressure, keep the car off damp concrete when possible, and roll it periodically so the same footprint does not stay loaded for months at a time. Radials generally resist temporary flat-spotting better than older bias-ply designs, but they still age from heat, time, and static loading.

For a DB7 that sees limited seasonal use, good storage habits preserve ride quality and sidewall condition as much as tread depth. If the car will remain parked for an extended stretch, periodic movement or properly positioned stands can help reduce stress on the tires. A breathable car cover and stable indoor temperatures also help protect the whole vehicle, not just the rubber.

On a 1998 Aston Martin, tire age matters more than mileage for most collector-use cars. A sound rule is to begin careful evaluation around five to seven years of age and to treat about ten years as the point where replacement deserves serious consideration, even if the tread still looks usable. The DOT date code on the sidewall is the best starting point for determining age.

That is especially important on a DB7, because a grand touring car can feel composed right up until an old tire loses flexibility, grip, or casing integrity. A low-mileage tire is not automatically a fresh tire. If the car has an older matched set, checking the dates before any long trip is just as important as checking tread depth or air pressure.

Tires on a 1998 Aston Martin should be inspected before every drive and again before any longer outing or highway trip. Look for cracking, weathering, punctures, bulges, uneven tread wear, and signs of slow air loss. Because the DB7 uses different front and rear sizes, inspect each axle on its own rather than assuming wear will look the same at all four corners.

A quick visual check is valuable, but a hands-on pressure check matters just as much on a car that may sit between drives. If one tire repeatedly loses pressure, investigate the valve stem, wheel sealing surface, and the tire itself before taking the car farther from home. Catching those issues early prevents both cosmetic damage to the tire and more serious roadside trouble.

A 1998 Aston Martin DB7 belongs to an era when modern radial performance tires were standard equipment, and its fitment uses 245/40R18 at the front and 265/35R18 at the rear. Those sizes suit the DB7’s late-1990s grand touring layout and its 18-inch wheel package. Original-equipment brand choice could vary by market and production details, so the safest historical baseline is to match the correct radial size, overall stance, and blackwall appearance.

For an owner pursuing originality, the goal is usually preserving the correct staggered look and a period-appropriate modern performance radial profile rather than chasing an unverified brand name. Factory literature, delivery records, and Aston Martin marque specialists are the best resources if you want to confirm market-specific details. For most restorations, getting the correct front and rear sizes right is the first priority.

Correct tire fitment does matter when showing a 1998 Aston Martin, even though the DB7 is a newer collector car than many traditional concours subjects. Judges and knowledgeable enthusiasts notice whether the car retains the proper front and rear sizing relationship, whether the tires have the appropriate blackwall appearance, and whether the overall profile suits a late-1990s grand touring Aston. An obviously incorrect size or a mismatched stagger can distract from an otherwise well-presented car.

For display use, authenticity usually means maintaining the car’s intended visual balance rather than reproducing a much older sidewall style. Owners entering marque-specific events should review the event’s judging standard and, if needed, check with an Aston Martin club or model registrar. That extra step helps determine how closely the car should mirror original market fitment versus a tasteful road-driven presentation.

For a 1998 Aston Martin DB7, both the BFGoodrich g-Force Sport COMP-2 and the Nitto NT555 G2 are available in 245/40R18 and 265/35R18, and both are blackwall radial performance tires. In 245/40R18, the BFGoodrich carries a 93W marking with a 168 mph ceiling and a 1,433-pound load figure at 51 psi, while the Nitto carries a 97W XL marking with a 1,609-pound load figure at 50 psi. In 265/35R18, the BFGoodrich appears in a 93W version, while the Nitto is a 97W XL with a 1,609-pound load figure at 50 psi.

Those details make this less about appearance and more about the exact spec balance you want within the correct DB7 front or rear size. A driver comparing the two should weigh load index, pressure rating, and the recommended rim-width range against the wheels already on the car. Matching front and rear from the same family can also help keep the car’s response more consistent.

1998 Aston Martin DB7 tires in these sizes are modern radial performance tires, and the available speed ratings include W and Y depending on the specific product. W corresponds to 168 mph, while Y corresponds to 186+ mph. Those ratings are well beyond ordinary U.S. highway speeds, and on a properly maintained DB7 the car’s condition, alignment, brakes, and suspension are just as important to safe road use as the tire speed symbol.

Highway safety comes down to choosing the correct front or rear size, using a tire with an appropriate rating for how the car is driven, and making sure the rest of the vehicle is ready for the trip. On a grand tourer like the DB7, old age, long storage, or deferred maintenance usually presents a bigger real-world risk than the rated capability of a fresh tire.

A 1998 Aston Martin should use pressures appropriate to its exact tire size and product, not a single number transferred across every option. In the available range, 245/40R18 products include load and pressure figures such as 1,235 pounds at 44 psi, 1,433 pounds at 51 psi, and 1,609 pounds at 50 psi. For 265/35R18, available figures include 1,433 pounds at 51 psi and 1,609 pounds at 50 psi.

Those numbers are tire capacities at maximum rated pressure, not automatic day-to-day DB7 inflation recommendations. For road use, compare the car’s factory guidance with the tire manufacturer’s sidewall information and keep the pressures consistent by axle. If the car has non-original wheels or a changed use pattern, a marque specialist or experienced tire technician can help you fine-tune from the correct baseline.

Before taking a 1998 Aston Martin DB7 on a longer drive, inspect all four tires for cracking, cuts, bulges, punctures, and uneven wear, and confirm that the front 245/40R18 and rear 265/35R18 positions are correctly matched. Check cold inflation pressures, valve stems, wheel condition, and the age of the tires. The spare, if carried, deserves the same inspection because long-stored backup tires often age out before they wear out.

A longer trip in a DB7 also calls for a broader pre-drive check of fluids, belts, brakes, and battery condition, since tire readiness is only one part of the car’s reliability picture. If the car has been sitting, a short local test drive after the inspection can reveal vibration, pull, or pressure loss before you commit to highway miles. That extra step is especially worthwhile with a modern classic Aston Martin.