2025 Audi Tire Fitment Guide

2025 Audi vehicles use 27 distinct tire sizes: 225/45R17, 225/40R18, 245/40R18, 245/35R19, 245/45R18, 255/35R19, 265/30R20, 235/45R18, 245/40R19, 245/45R19, 255/40R20, 255/35R21, 235/45R20, 265/40R20, 225/55R19, 245/50R19, 245/45R20, 265/35R21, 285/40R20, 305/30R21, 265/30R19, 265/35R19, 275/30R20, 275/35R21, 285/30R22, 235/35R19, and 245/35R20. These fit different model groups rather than every 2025 Audi, and wheel diameters span 17 through 22 inches.

That wide spread means year and make alone are not enough for a safe selection. Start with the exact model, then verify the wheel diameter already on the car, then confirm the size molded on the existing tire placard or sidewall. That is especially important on A5, A6, RS, S, and e-tron models, where one model line may use two, three, or even four different sizes depending on package and axle position.

On a 2025 Audi, a size such as 245/40R18 breaks down into three main dimensions. The first number, 245, is the nominal section width in millimeters. The second number, 40, is the aspect ratio, meaning the sidewall height is 40 percent of the section width. The R means radial construction, and the final number, 18, is the wheel diameter in inches.

Once you understand that format, it becomes easier to compare how Audi fitments change across the range. A move from a 45-series tire to a 35-series tire usually means a shorter sidewall and a larger wheel, while the width number often increases as the car moves from standard luxury trim toward S, RS, or staggered EV performance applications. That makes the code itself one of the quickest ways to verify whether a replacement belongs on your exact 2025 Audi.

No, 2025 Audi models do not use the same tire size. The A3 Quattro starts as small as 225/45R17, while cars such as the RS6 Avant and RS7 Sportback reach 285/30R22, and the RS e-tron GT Performance uses a staggered combination that includes 245/45R20, 285/40R20, 265/35R21, and 305/30R21. Even within one model line, multiple factory wheel and tire packages are common.

That variation has a practical consequence: model identification is not optional. Audi’s current lineup mixes compact sedans, wagons, large luxury cars, and EVs, so there is no single year-wide fitment rule. If you are uncertain, compare the car’s model badge, the door-jamb tire information placard, and the actual sidewall marking before settling on a replacement size.

The currently covered 2025 Audi tire sizes use blackwall sidewalls throughout the available products. That includes sizes such as 225/45R17, 225/40R18, 245/40R18, 245/35R19, 245/45R18, 255/35R19, 245/45R20, 265/35R19, and several others with active product coverage. There are no whitewall or specialty sidewall treatments in the available selections for these sizes.

That matches what most modern Audi buyers would expect, since contemporary Audi sedans, wagons, and performance models are designed around clean, understated sidewall appearance rather than vintage styling cues. For a 2025 Audi, sidewall choice is therefore simple, and the more meaningful comparison points become exact size, wheel diameter, speed rating, and whether the tire’s overall character fits the way you use the car.

BFGoodrich, Nitto, and M&H Racemaster cover the 2025 Audi sizes that currently have product availability here. BFGoodrich appears across most of the covered sizes, including 225/45R17, 225/40R18, 245/40R18, 245/35R19, 255/35R19, 245/45R19, 245/45R20, and 245/35R20. Nitto also covers a wide group of those sizes, while M&H Racemaster appears in 245/40R18 with a drag-oriented radial option.

Brand choice matters less than matching the tire to the car’s actual fitment and intended use. A commuter-oriented A3 Quattro, a luxury A6 Quattro, and an RS5 Sportback may all need different dimensions and may also suit different performance priorities. Once the size is confirmed, comparing the available brand mix within that exact size is the most efficient way to narrow the field.

On covered 2025 Audi sizes where both appear, BFGoodrich g-Force and Nitto NT555 G2 often share the same basic size and blackwall radial layout but can differ in speed rating details, load figures, and rim-width ranges. In 245/45R20, for example, BFGoodrich products include W- and Y-rated choices, while the Nitto NT555 G2 is W-rated. In 245/40R18, BFGoodrich and Nitto both fit the size, but the published rim-width ranges and load figures are not identical across every product.

That means the best comparison is never brand name alone. Once you know the exact size on your 2025 Audi, look at the sidewall service description, speed letter, and approved rim-width range for the individual tire. Those details matter more than broad brand reputation when you are trying to match a modern Audi’s wheel package and intended driving use accurately.

Rim-width requirements vary by size on 2025 Audi applications. Examples include 225/45R17 at roughly 7.0 to 10.0 inches depending on the product, 225/40R18 at about 7.5 to 9.0 inches, 245/40R18 at about 8.0 to 9.5 inches with one drag radial at 8.5 inches, 255/35R19 at about 8.5 to 10.0 inches, 245/50R19 at about 7.0 to 8.5 inches, and 245/35R20 at about 8.0 to 9.5 inches.

Those ranges are a reminder that tire size alone is only part of the fitment picture. Before replacing a tire on a 2025 Audi, confirm that the wheel width falls inside the approved range for the exact tire you want, not just the size in general. That is especially important on lower-profile 19-, 20-, and 21-inch applications, where wheel-package differences are common.

The covered 2025 Audi tires are modern radial products, and the visible service markings point to tubeless fitments rather than traditional tube-type construction. Some size strings include TL markers, such as 245/40ZR18 97Y XLTL and 245/45ZR20 103Y XLTL, while the rest follow the same modern radial pattern without any tube-type designation. There are no TT markings in the currently covered Audi products here.

For most late-model Audi applications, that means the tire choice is centered on the wheel and tire match rather than sourcing inner tubes. The practical check is to confirm the wheel itself is appropriate for tubeless use and that the valve stem condition is good before mounting. On a 2025 Audi, valve-stem health and wheel condition matter more than tube selection.

A stored 2025 Audi should be kept out of direct sunlight, away from electric motors or ozone-producing equipment, and in a clean, dry environment with stable temperature if possible. Tire pressures should be set correctly before storage, and the car should be moved periodically or supported in a way that reduces long-term static loading if it will sit for an extended period. Modern radial tires generally tolerate storage better than older bias-ply designs, but they still age from time, heat, and environmental exposure.

For an Audi that sees seasonal or collector-style use, proper storage can preserve both ride quality and sidewall condition. Check the tires after storage for flat spotting that does not drive out, sidewall weathering, or pressure loss before returning the car to regular use. That is especially worthwhile on expensive 20-, 21-, and 22-inch Audi fitments, where replacement costs and wheel sensitivity tend to be higher.

On a 2025 Audi, tire life should be judged by age and condition as much as by tread depth. A good working rule is to evaluate tires closely once they reach about five to seven years of age and to treat about ten years as the outer edge for replacement consideration regardless of remaining tread. The DOT date code on the sidewall is the best way to establish the tire’s age.

That guideline matters because many luxury and performance Audis accumulate miles unevenly. A garage-kept S5 Sportback or RS6 Avant can still have aging tires long before the tread is gone, while an A3 Quattro daily driver may wear out a set much sooner through use alone. Tread, age, cracking, and how the car actually drives should all be part of the replacement decision.

Tires on a 2025 Audi should be inspected before every drive in a quick walk-around and more carefully before any long highway trip. Check for visible cuts, bulges, unusual shoulder wear, punctures, and pressure loss, and pay close attention to the low-profile sidewalls used on many 19-, 20-, 21-, and 22-inch applications. A more thorough inspection during regular service intervals is also wise.

Modern Audis can mask tire issues well because the chassis is so refined, which makes visual inspection even more important. A tire with marginal pressure or hidden sidewall damage can change steering response and braking feel before it becomes obvious. If your 2025 Audi uses staggered sizes, inspect all four positions individually rather than assuming front and rear wear patterns will match.

Yes, the covered 2025 Audi tire options are modern radial designs intended for normal road use, and several sizes carry W or Y speed ratings depending on the specific product. W-rated tires are rated to 112 mph, while Y-rated tires are rated to 186 mph. Some sizes, including 245/40R18, 245/35R19, 245/45R18, 255/35R19, 245/40R19, 245/45R19, 245/45R20, 265/35R19, and 235/35R19, can vary by product between those ratings.

For normal U.S. highway use, the tire’s speed ceiling is often less limiting than the car’s condition, alignment, brakes, and the actual road surface. The important step is choosing a tire whose service description suits the car’s performance level and then maintaining correct pressure and condition. On a powerful 2025 Audi, especially an S, RS, or e-tron GT model, matching the intended speed category is part of responsible replacement planning.

Inflation pressure on a 2025 Audi should follow the vehicle placard or owner’s manual first, because Audi sets pressure by model, axle load, and operating condition. The tire products themselves also publish maximum load and pressure figures in some covered sizes, such as 225/45R17 at up to 1,477 pounds at 50 psi, 245/40R18 at up to 1,609 pounds at 50 psi, 245/45R19 at up to 1,874 pounds at 50 psi, and 245/50R19 at up to 2,039 pounds at 50 psi.

Those figures are not everyday cold-pressure recommendations for every Audi using that size. They are service-capability numbers for the tire itself. The practical rule is simple: use Audi’s pressure guidance for your exact model and load condition, then confirm the tire you choose meets the needed capacity. Do not transfer a pressure figure from one size or one Audi model to another just because the numbers look close.

Before a longer trip in a 2025 Audi, inspect tread depth, visible sidewall condition, air pressure, and any signs of puncture, cuts, or bulging. Also check for uneven wear that might suggest alignment or suspension issues, especially on low-profile or staggered setups. If the car has a spare, verify its condition and inflation too, and make sure the valve stems and caps are intact.

A long-drive check should go beyond the tires, but the tires are still one of the most important safety items on the car. On a high-performance or EV Audi, heavy loads, long interstate runs, and large wheel diameters can make pressure accuracy especially important. A few minutes spent checking condition before departure can prevent vibration, poor handling, or a roadside failure much farther from home.