The 2018 Audi A4 allroad blends wagon practicality with the raised stance and all-weather character that made Audi’s allroad models so appealing to drivers who wanted something more versatile than a standard luxury sedan. It sits firmly in the modern sport-wagon category, where ride quality, steering response, and everyday usability all depend heavily on proper tire choice. This model uses a 245/45R18 radial tire on an 18-inch rim across its covered trim levels. Available choices center on blackwall performance-oriented radial options from BFGoodrich and Nitto. For this Audi, the real decision is choosing the right tire within the correct size while confirming wheel specs, load needs, and intended road use.
Which Tire Size Is Right for The 2018 Audi A4 allroad
The 2018 Audi A4 allroad uses one primary tire size: 245/45R18, a radial fitment for an 18-inch wheel. That same size is used across Premium, Premium Plus, and Prestige trims, so the main decision is not which size fits, but which tire best matches the vehicle’s wheel setup, driving priorities, and preferred product characteristics.
In 245/45R18, the 245 identifies the tire’s nominal section width in millimeters, 45 is the aspect ratio, R indicates radial construction, and 18 is the rim diameter in inches. For the 2018 Audi A4 allroad, this modern metric radial size supports the vehicle’s balance of everyday comfort, handling precision, and wagon utility. Available options in this size include blackwall tires from BFGoodrich and Nitto across several performance-oriented series. Choosing within 245/45R18 comes down to matching the tire to the actual wheel width, load specification, and the kind of road use the car will see.
Tire fitment is straightforward across the covered 2018 Audi A4 allroad trims. Premium, Premium Plus, and Prestige all use the same 245/45R18 radial size, so trim level does not change the basic tire-size decision.
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2018 Audi A4 allroad Premium
The 2018 Audi A4 allroad Premium uses the same 245/45R18 radial tire size as the other covered trims. That keeps selection focused on the tire itself, including wheel-width compatibility, load capacity, and the character of the available blackwall performance-oriented options.
The 2018 Audi A4 allroad Premium Plus follows the same 245/45R18 radial fitment used across the model range. With size consistency already established, the practical next step is comparing tire series, wheel-width suitability, and the type of road manners desired from the replacement tire.
The 2018 Audi A4 allroad Prestige also uses 245/45R18 radial tires on an 18-inch rim. Since the size does not change at this trim level, tire selection is mainly about choosing among the available brands and series while confirming the actual wheel setup on the vehicle.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2018 Audi A4 allroad Tires for Sale
Available 245/45R18 choices center on blackwall radial tires from BFGoodrich and Nitto. The product grid lets you compare several performance-focused series with similar 18-inch fitment but meaningful differences in rim-width range, load specification, and overall tire character.
These FAQs for the 2018 Audi A4 allroad focus on the correct 245/45R18 tire size, 18-inch rim fitment, product selection, trim-level consistency, and the basic checks that matter before putting the vehicle back into regular road use.
Tire Size & Fitment
What tire size fits a 2018 Audi A4 allroad?
The 2018 Audi A4 allroad uses a 245/45R18 radial tire. That size applies across the covered Premium, Premium Plus, and Prestige trims, making fitment more straightforward than on vehicles where tire size changes by sub-model or wheel package.
Using the correct size is only the first step. It is still important to confirm that the car retains its 18-inch wheels and that wheel width matches the tire’s approved range, especially if the vehicle has been modified or fitted with aftermarket wheels since new.
What size rim does a 2018 Audi A4 allroad use?
The primary tire fitment for the 2018 Audi A4 allroad is built around an 18-inch rim. The 245/45R18 size is designed for that wheel diameter, and the available products in this fitment are all 18-inch radial tires.
Rim diameter should never be guessed from appearance alone. Checking the actual wheel on the vehicle is especially worthwhile before replacement, since an allroad may already have different wheels installed, and matching the tire to both rim diameter and wheel width is what keeps fitment on track.
Do all 2018 Audi A4 allroad sub-models use the same tire size?
Yes. The covered 2018 Audi A4 allroad Premium, Premium Plus, and Prestige trims all use the same 245/45R18 radial tire size. That means trim level does not create a separate primary fitment path within this model-year page.
Even with shared trim fitment, the vehicle itself should still be checked before purchase. Wheels may have been changed over time, and actual tire selection still involves comparing load rating, wheel-width compatibility, and the driving feel you want from the available radial tire options.
Choosing the Right Tire
What should I consider when choosing a 245/45R18 tire for a 2018 Audi A4 allroad?
Start with the correct 245/45R18 size and confirm the tire is intended for an 18-inch wheel. From there, compare practical factors such as wheel-width range, load specification, tire series, and the kind of use the Audi will see, whether that is routine commuting, highway driving, or more performance-minded road use.
The available choices in this size are all blackwall radial tires, but they are not identical in specification. Looking at the actual wheel width on the car, along with the tire’s load capacity and overall product character, will help narrow the field without treating every 245/45R18 as the same.
What brands offer tires for the 2018 Audi A4 allroad?
Tires for the 2018 Audi A4 allroad in 245/45R18 are available from BFGoodrich and Nitto. BFGoodrich appears across multiple g-Force series as well as the g-Force Phenom T/A, while Nitto is represented by the NT555 G2 in this fitment.
Brand alone should not decide the purchase. It makes more sense to compare each tire’s series, load figure, rim-width range, and intended character within the correct size, then match those details to the way the allroad is actually driven and the wheel setup currently on the car.
What tire series are available for the 2018 Audi A4 allroad?
The 2018 Audi A4 allroad has several 245/45R18 radial series available, including BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2. Each stays within the correct size while offering a different product identity within the performance-oriented radial category.
Series names matter because they help distinguish options that may share the same basic size but differ in specification and intended use. Comparing the series alongside wheel-width compatibility, load capacity, and the car’s expected driving conditions will usually be more useful than comparing size alone.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Audi A4 allroad restoration or preservation project?
Yes. Even though a 2018 Audi A4 allroad is a modern vehicle, correct tire fitment still matters for anyone preserving the car’s intended stance, handling balance, and overall presentation. Staying with the proper 245/45R18 size keeps the tire in the fitment range this model uses across its covered trims.
Appearance is only one part of that decision. A preservation-minded owner should also confirm wheel diameter, wheel width, and the vehicle’s current setup before choosing a replacement, since later wheel changes can alter both the look of the car and the practical fitment requirements.
Which sidewall style suits a period-appropriate 2018 Audi A4 allroad appearance?
The available tires in 245/45R18 for the 2018 Audi A4 allroad use a blackwall sidewall style. That suits the vehicle’s modern European sport-wagon look and keeps the presentation aligned with the understated, performance-oriented appearance many owners prefer on this generation of Audi.
Sidewall style should still be viewed as part of a larger fitment decision rather than a stand-alone cosmetic choice. Keeping the correct size and proper wheel compatibility in place matters just as much as appearance, especially on a vehicle where tire profile contributes noticeably to the overall visual balance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Audi A4 allroad?
Yes. A 2018 Audi A4 allroad may use the same primary 245/45R18 size across its covered trims, but aftermarket wheels, suspension changes, ride-height adjustments, or body modifications can change what actually works on the car. Those changes can affect wheel width, offset, and available clearance.
Checking the current setup before replacement is the safest approach. Measure the actual wheel diameter and width, then inspect steering and fender clearance at full lock and normal ride height so the chosen tire matches the car as it sits now, not simply how it left the factory.
What should I inspect before driving a 2018 Audi A4 allroad on new tires?
Before road use, inspect tire pressure, lug torque, tread seating, and the general condition of the wheels. It is also smart to look for any visible interference at the inner fender, suspension, or steering components, especially if the vehicle has non-original wheels or recent suspension work.
A short, careful test drive helps confirm that everything feels normal. Pay attention to vibration, pulling, unusual noise, and clearance under turning and compression, then recheck pressures after the tires have settled in so the allroad is ready for regular driving with confidence.
How often should tires on a 2018 Audi A4 allroad be inspected?
Tires on a 2018 Audi A4 allroad should be inspected regularly, not only when replacement is due. Frequent visual checks for uneven wear, cracking, punctures, bulges, and air loss are important, especially on a vehicle that may alternate between daily use and longer periods of limited mileage.
Routine inspection is also a good way to catch fitment-related problems early. Uneven shoulder wear, rubbing marks, or pressure loss can point to alignment issues, wheel changes, or other setup concerns, and those are easier to correct before they shorten the life of a new 245/45R18 tire.
