2014 Audi Tire Fitment Guide

2014 Audi vehicles use 21 tire sizes across 19 model lines. A4 and A4 Quattro use 245/45R17, 245/40R18, and 255/35R19; A5 and A5 Quattro use 245/40R18 and 255/35R19; A6 and A6 Quattro use 225/55R17, 245/45R18, 255/40R19, and 255/35R20; A7 Quattro uses 255/40R19 and 265/35R20; A8 Quattro uses 255/45R19 and 265/40R20; Allroad uses 245/45R18 and 245/40R19; R8 uses 235/35R19, 295/30R19, and 305/30R19; RS5 uses 265/35R19 and 275/30R20; RS7 uses 275/35R20 and 275/30R21; S4 uses 245/40R18 and 255/35R19; S5 uses 245/40R18, 255/35R19, and 265/30R20; S6 uses 255/40R19 and 255/35R20; S7 uses 255/40R19 and 265/35R20; S8 uses 265/35R21 and 275/35R21; TT Quattro uses 245/40R18 and 255/35R19; TTS Quattro uses 255/35R19.

That spread means there is no single 2014 Audi tire size. Some families overlap, especially A4, A5, S4, S5, TT Quattro, and TTS Quattro around 18- and 19-inch fitments, while larger A6, A7, A8, S, and RS models move into wider 19-, 20-, and 21-inch sizes. If your car has optional wheels, confirm the exact size on the sidewall of the current tire before choosing a replacement. That step matters just as much as knowing the year and make.

On a 2014 Audi tire, 245/40R18 is a metric radial size. The 245 is the nominal section width in millimeters, 40 is the aspect ratio, meaning the sidewall height is 40 percent of the section width, R means radial construction, and 18 is the wheel diameter in inches. This size appears on A4, A4 Quattro, A5, A5 Quattro, S4, S5, and TT Quattro models in the 2014 Audi range.

That code tells you both dimensions and wheel compatibility. A 245/40R18 tire belongs only on an 18-inch wheel, and it should not be treated as interchangeable with 245/45R17 or 255/35R19 just because those sizes may appear on related Audi models. Within 245/40R18, street-performance choices come from BFGoodrich and Nitto, while M&H also offers a drag-radial version for a much more specialized use case. Matching the code exactly is the safest place to begin.

No, 2014 Audi models do not use the same tire size. The year spans compact sedans and coupes, midsize luxury cars, a raised Allroad wagon, full-size flagship sedans, S and RS performance variants, and the R8 supercar, so tire size changes substantially by model. Rim diameters range from 17 inches to 21 inches, and some models such as the R8 and S8 use multiple sizes within the same wheel-diameter family.

In practical terms, that means a 2014 Audi buyer has to identify the exact model before choosing tires. An A4 and an A6 may both be 2014 Audi vehicles, but their available sizes, wheel diameters, and intended tire widths can differ considerably. The same applies inside one model family when optional wheel packages were offered. Start with the model, then the wheel diameter, then the full sidewall size already on the car.

Most 2014 Audi tire sizes here are available in blackwall form, which is the standard modern appearance for late-model Audi sedans, coupes, wagons, and performance cars. A few sizes add specialty sidewall treatments: 225/55R17 is available in a wide whitewall, 265/35R20 appears in blackwall, redline, and RWL versions, 305/30R19 appears in blackwall, redline, and RWL, and 275/35R20 appears in blackwall and RWL. Those specialty looks are unusual in period-correct 2014 Audi presentation.

For most restorations or stock-looking cars, blackwall is the natural choice because it matches the visual language Audi used in this era. A redline, whitewall, or raised white letter treatment makes more sense on a personalized build than on an original-style A6, S4, or RS7. The right answer comes down to whether you want to preserve factory-style appearance or create a more custom look. Once that visual direction is clear, choosing among the available sizes becomes much easier.

2014 Audi tire sizes here come from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. BFGoodrich appears across the broadest range of sizes, including 245/40R18, 245/45R17, 255/35R19, 225/55R17, 245/45R18, 255/40R19, 255/35R20, 245/40R19, 235/35R19, 265/35R19, and 275/35R20. Nitto covers many of the same modern performance sizes, while M&H appears in select drag-radial applications and Pro-Trac appears in certain custom-style 20- and 19-inch sizes with redline or RWL sidewalls.

That brand mix gives 2014 Audi owners several different directions. BFGoodrich and Nitto are the core choices for conventional street use in many of the common Audi sizes, especially where W- and Y-rated options appear. M&H is a niche choice for straight-line traction rather than everyday use, and Pro-Trac adds visual character more than an OEM-style appearance. Once you know your exact size, compare brands by speed rating, sidewall style, and the kind of driving the car actually sees.

For several 2014 Audi sizes, BFGoodrich offers both g-Force Sport COMP-2 and g-Force Phenom T/A versions. In shared sizes such as 255/35R19, 255/40R19, 255/35R20, 245/40R19, 235/35R19, 265/35R19, and 275/35R20, the g-Force Sport COMP-2 commonly carries a W speed rating, while the g-Force Phenom T/A carries a Y speed rating. Rim-width compatibility is often similar within the same size, and some Phenom products also show specific load figures at 50 psi.

For a 2014 Audi owner, the practical takeaway is to compare the exact size first, then look at the speed letter and any load figures attached to the specific product. A Phenom T/A may appeal when a higher speed symbol matters or when you want the most current spec within that size family, while a g-Force Sport COMP-2 remains a straightforward blackwall performance option. The better choice is not universal across the whole range; it depends on the exact Audi model and tire size you are matching.

Rim width requirements vary by size on 2014 Audi vehicles. Examples include 245/40R18 at 8.0 to 9.5 inches, 245/45R17 at 7.5 to 9.0 inches, 255/35R19 at 8.5 to 10.0 inches, 225/55R17 at 6.0 to 8.0 inches, 245/45R18 at 7.5 to 9.0 inches, 255/40R19 at 8.5 to 10.0 inches, 255/35R20 at 8.5 to 10.0 inches, 265/35R20 at 9.0 to 10.5 inches, 245/40R19 at 8.0 to 9.5 inches, and 275/35R20 at 9.0 to 11.0 inches. A few products in some sizes show a single measuring rim instead of a full range.

Those numbers matter because a tire can have the correct sidewall size and still be a poor choice if the wheel width falls outside the manufacturer’s approved range. Before ordering, confirm the actual wheel width on the car, especially on aftermarket wheels or staggered setups such as the R8 and some high-performance S and RS models. Staying inside the approved rim-width window helps preserve intended tread shape, bead seating, and overall drivability.

The 2014 Audi tire sizes here are modern radial fitments, and the products that show tube-related markings point toward tubeless construction rather than tube-type service. Some products explicitly include TL in the size marking, while many others use modern radial nomenclature without a tube-type designation. There is no tube-type-only fitment in this 2014 Audi group. Even so, exact tube status can vary by product marking, so the sidewall and manufacturer details for the tire you choose should be checked before installation.

For most 2014 Audi applications on original modern wheels, buyers will be working within a tubeless tire and tubeless wheel environment. The main setup concern is less about adding a tube and more about making sure the tire matches the wheel diameter, approved rim width, and any front-to-rear stagger. If a wheel has been refinished, repaired, or replaced with an aftermarket piece, inspect the wheel condition and valve stem hardware at the same time the new tires are fitted.

A stored 2014 Audi should sit in a cool, dry, dark space away from direct sunlight, electric motors, welders, battery chargers, furnaces, and other ozone-producing equipment. Keep the tires clean, properly inflated, and off damp soil or standing moisture. If the car will sit for an extended period, move it periodically so the same contact patch does not stay loaded in one spot for months. That is especially helpful on low-profile performance tires used on larger 19-, 20-, and 21-inch wheels.

The practical goal is to slow cosmetic aging and reduce flat-spotting. Long static storage can age a tire more by time and environment than by miles, which matters on enthusiast-owned Audis that see seasonal use or are kept as special-occasion cars. If the car will be parked for a very long period, some owners use stands to reduce load on the tires, but that only helps if the suspension is supported correctly and the storage environment itself is sound.

Tires on a 2014 Audi should be judged primarily by age and condition, not just by remaining tread. A sensible collector and enthusiast standard is to begin close inspection and replacement evaluation around five to seven years, then give strong replacement consideration as tires approach ten years from the DOT date code, even if they have seen limited mileage. Low annual use does not stop rubber from aging, hardening, or losing flexibility over time.

That matters even more on a 2014 Audi because many of these sizes are low-profile, performance-oriented radials fitted to larger wheels. Such tires may still look presentable yet develop age-related issues that affect ride quality and safety margins. Check the DOT code, inspect sidewalls and tread closely, and think about replacement before a long road trip rather than after cracks or vibration become obvious. Age is often the more important benchmark than miles on enthusiast cars.

Tires on a 2014 Audi should be inspected before every drive and given a more thorough check before any longer highway trip. Look for cracking, cuts, punctures, bulges, irregular tread wear, curb damage on low-profile sidewalls, and any sign that the tire is losing pressure between outings. Performance Audis with staggered setups, such as the R8 and some large S or RS applications, deserve extra attention because front and rear tires may wear differently and cannot always be rotated in the same way.

A quick walkaround catches many problems before they become expensive or dangerous. Pay close attention to shoulders and inner edges, since wide modern Audi tires can hide wear that is not obvious from a casual glance. If a car is stored for long periods, inspect the spare as well, not just the four road tires. Regular checks are one of the simplest ways to protect wheels, suspension parts, and overall drivability on a late-model enthusiast Audi.

Yes, many 2014 Audi tire options here are suitable for highway driving when they are in good condition, correctly inflated, and matched to the vehicle’s original size and wheel. The sizes with visible speed symbols use W and Y ratings, with W carrying a 168 mph ceiling and Y carrying a 186 mph ceiling. Several sizes, including 245/40R18, 255/35R19, 255/40R19, 255/35R20, 265/35R20, 245/40R19, 235/35R19, 265/35R19, and 275/35R20, offer both W- and Y-rated choices depending on product.

In real use, a 2014 Audi’s condition, alignment, brake health, and suspension integrity matter just as much as the speed symbol on the tire. Most normal U.S. highway driving stays well below these published ceilings, but the tire still needs to be the correct size for the wheel and axle position. For higher-output cars such as RS and R8 models, matching the intended speed category and keeping the tires fresh and properly maintained is especially important.

Inflation pressure on a 2014 Audi should follow the vehicle placard or owner’s manual first, because factory pressure targets are tuned to the exact model, wheel package, and axle loading. Tire products in these sizes show different maximum load and pressure figures, and those figures are not the same thing as the car’s recommended cold inflation setting. Examples include 245/40R18 products at 44 to 51 psi maximum depending on product, 245/45R17 products at 35 to 51 psi, 255/35R19 at 50 psi on products that state load data, and 275/35R20 at 50 psi on products that state load data.

Use the tire manufacturer’s maximum-pressure marking as the upper limit tied to that tire’s rated load, not as a universal day-to-day setting. Because 2014 Audi fitments span many sizes and several different vehicle classes, pressure from one model or tire size should never be copied onto another. Start with the Audi placard, verify the exact size on the car, and adjust only within the tire and vehicle manufacturer’s guidance. That approach preserves wear, ride quality, and handling balance.

Before a longer drive in a 2014 Audi, inspect each tire for cracking, cuts, punctures, bulges, uneven wear, and proper cold inflation. Confirm that the size matches the wheel position, especially on cars with staggered fitments such as the R8 and some larger S or RS models. Check valve stems, tread depth, and the condition of the spare if the car carries one. On low-profile sizes, also look closely for sidewall bruising or wheel-edge damage from potholes or curb contact.

A tire check should be part of a broader pre-trip inspection on any 2014 Audi, not a stand-alone task. Wide modern tires can mask inner-edge wear, so use a flashlight and inspect the full circumference if possible. If the car has been sitting, drive a short distance locally first to feel for vibration, pull, or pressure-loss symptoms before committing to a long highway run. Catching those issues early is far easier than dealing with them after the trip begins.