The 2018 Audi Trucks Q5 sits in the modern luxury crossover segment, where everyday comfort, all-weather confidence, and sharp road manners all matter to owners. Its styling and chassis tuning give tire choice a bigger role than on a purely utilitarian SUV, especially when wheel diameter changes across trims. This Q5 uses radial tire fitments in 18-, 19-, and 20-inch sizes, with sub-model and wheel package determining which one applies. Available options lean toward modern blackwall performance tires, with some raised white letter and redline choices in 255/45R20. The key is matching the exact trim and wheel setup before comparing appearance, road-use character, and rim compatibility.
Which Tire Size Is Right for The 2018 Audi Trucks Q5
The 2018 Audi Trucks Q5 uses three primary tire sizes, and the right one depends on the exact sub-model and wheel diameter. All three fitments are radial, but they are tied to different 18-, 19-, and 20-inch wheels, so confirming the wheel size on the vehicle is the first step before comparing tire choices.
235/55R19 is a metric radial size in which 235 identifies the section width in millimeters, 55 is the aspect ratio, R designates radial construction, and 19 is the wheel diameter in inches. On the 2018 Audi Trucks Q5, this size represents a modern crossover fitment aimed at balancing ride quality, handling, and proper wheel proportion. It shares a very similar overall diameter with the other primary Q5 sizes, but it still belongs only on the correct 19-inch wheel. This size should be evaluated by owners who have confirmed a 19-inch factory-style setup on their specific Q5 trim.
235/60R18 follows the same modern metric radial format, with a 235-millimeter section width, a 60-series profile, radial construction, and an 18-inch rim diameter. For the 2018 Audi Trucks Q5, it is one of the primary fitments tied to an 18-inch wheel package rather than a universal size across every trim. Its dimensions keep it close in overall height to the other Q5 tire options, but wheel diameter remains the deciding factor. Buyers considering this size should verify that the vehicle actually wears 18-inch wheels before moving on to tread style and product comparison.
255/45R20 is a wider metric radial size, with 255 indicating section width in millimeters, 45 representing the aspect ratio, R for radial construction, and 20 for the wheel diameter. On the 2018 Audi Trucks Q5, this fitment is used on certain configurations that carry 20-inch wheels and a more aggressive visual stance. Available tires in this size include offerings from BFGoodrich, Nitto, and Pro-Trac, with blackwall, raised white letter, and redline sidewall treatments. This size is the one to review when the Q5 already has 20-inch wheels and appearance choice matters alongside basic fitment.
Tire fitment on the 2018 Audi Trucks Q5 varies by sub-model and wheel package rather than following one size across the full range. Checking the exact trim matters because Premium, Premium Plus, and Prestige do not all share the same tire-size spread.
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2018 Audi Trucks Q5 Premium
The 2018 Audi Trucks Q5 Premium uses radial tire fitments in 235/60R18 and 235/55R19, depending on the wheel setup on the vehicle. Tire selection starts with confirming whether the Q5 has 18-inch or 19-inch wheels, then comparing replacement options within that exact size.
The 2018 Audi Trucks Q5 Premium Plus has the broadest fitment range here, with radial sizes in 235/60R18, 235/55R19, and 255/45R20. That makes wheel diameter the key detail to verify first, since the correct tire choice depends on the actual wheel package installed on the vehicle.
The 2018 Audi Trucks Q5 Prestige uses the 255/45R20 radial fitment. For this trim, the decision is less about choosing among primary sizes and more about selecting the right 20-inch tire style, series, and sidewall presentation for the way the vehicle is used.
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 Trucks Q5 Tires for Sale
Available product choices center on 255/45R20, with radial offerings from BFGoodrich, Nitto, and Pro-Trac. The main differences are tire series, blackwall versus raised white letter or redline sidewall treatment, and rim-width specifications where stated.
These FAQs focus on 2018 Audi Trucks Q5 tire sizes, trim-based fitment, wheel diameter, available 255/45R20 product choices, and the checks that matter before road use or wheel changes.
Tire Size & Fitment
What tire size fits a 2018 Audi Trucks Q5?
The 2018 Audi Trucks Q5 uses three primary tire sizes: 235/60R18, 235/55R19, and 255/45R20. All are radial fitments, but they do not apply across every Q5 configuration in the same way. Premium can use 18-inch or 19-inch sizes, Premium Plus can use 18-, 19-, or 20-inch sizes, and Prestige uses 255/45R20.
The practical step is to confirm the exact trim and, just as importantly, the wheel diameter currently on the vehicle. A Q5 that has had wheel changes since new may no longer match the original trim pattern, so the tire should always be selected by the actual wheel size in front of you.
What size rim does a 2018 Audi Trucks Q5 use?
A 2018 Audi Trucks Q5 can use 18-inch, 19-inch, or 20-inch rims, depending on the trim and wheel package. The 235/60R18 tire belongs on an 18-inch rim, 235/55R19 belongs on a 19-inch rim, and 255/45R20 belongs on a 20-inch rim.
Rim diameter is the first fitment detail to verify because the three primary Q5 tire sizes are tied directly to different wheel diameters. Once that is confirmed, the next checks are wheel width, overall vehicle setup, and any aftermarket changes that could affect clearance or the tire choices worth comparing.
Do all 2018 Audi Trucks Q5 sub-models use the same tire size?
No. The 2018 Audi Trucks Q5 sub-models do not all share one tire size. Premium uses 235/60R18 or 235/55R19, Premium Plus can use 235/60R18, 235/55R19, or 255/45R20, and Prestige uses 255/45R20.
That variation means tire selection should start with the exact trim and wheel package rather than the model name alone. It is also smart to inspect the tire sidewall and wheel before ordering replacements, since many Q5s may have changed wheels over time and no longer wear the same size they left with originally.
Choosing the Right Tire
What should I consider when choosing a 255/45R20 tire for a 2018 Audi Trucks Q5?
Start with the basics: 255/45R20 must match the 20-inch wheel on the vehicle, and the tire should suit how the Q5 is actually driven. Available choices in this size include several radial products, with differences in tire series, sidewall treatment, weight, and stated rim-width compatibility where that specification appears.
Beyond size alone, compare whether the tire's look and character fit the vehicle's role. Some owners want a straightforward blackwall performance look, while others may prefer raised white letter or redline styling. It also helps to confirm wheel width and inspect for any suspension or wheel modifications before narrowing the selection.
What sidewall styles are available for 2018 Audi Trucks Q5 tires?
Among the currently available Q5 product choices, 255/45R20 offers blackwall, raised white letter, and redline sidewall styles. Blackwall appears across BFGoodrich and Nitto options, while Pro-Trac Street Pro III is available in raised white letter and redline versions.
Sidewall style changes the visual character of the vehicle much more than many owners expect, especially with a 20-inch wheel. A blackwall keeps the look modern and understated, while raised white letter or redline adds a more stylized presentation. The right choice depends on the appearance goal as much as the tire size itself.
What brands offer tires for the 2018 Audi Trucks Q5?
Current product options for the 2018 Audi Trucks Q5 in 255/45R20 include BFGoodrich, Nitto, and Pro-Trac. Those choices cover several tire series, including g-Force Comp 2 AS, g-Force Sport Comp 2, Nitto NT555 G2, and Pro-Trac Street Pro III.
Brand is only one part of the decision. It makes more sense to compare each tire by the exact size, sidewall treatment, construction, and any stated rim-width or load specification than to choose by name alone. That approach is especially useful when the Q5's wheel package and intended use are already fixed.
Restoration & Appearance
How important is appearance when choosing tires for a 2018 Audi Trucks Q5?
Appearance can play a meaningful role, especially on a 2018 Audi Trucks Q5 fitted with 20-inch wheels where the tire sidewall remains very visible. In the available 255/45R20 choices, blackwall, raised white letter, and redline styles create noticeably different visual impressions even though they share the same basic fitment category.
For an owner who wants a clean contemporary look, blackwall is the most understated choice. Raised white letter and redline treatments move the vehicle toward a more customized presentation. The best approach is to decide whether the Q5 should look stock-leaning or personalized before comparing series and secondary specifications.
How does tire construction affect the appearance of a 2018 Audi Trucks Q5?
On the 2018 Audi Trucks Q5, the primary fitments are radial tires, so construction itself is not a bias-ply-versus-radial appearance decision. The more visible difference comes from the tire's proportions within its size and the sidewall treatment chosen, particularly in 255/45R20 where blackwall, raised white letter, and redline options are available.
That means appearance shopping on this Q5 is really about style within the correct radial fitment rather than changing tire construction type. Owners trying to preserve a restrained luxury-crossover look will usually focus on blackwall choices, while a more expressive street-oriented presentation may point toward one of the styled sidewalls.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Audi Trucks Q5?
Yes. Modifications can change how a tire fits on a 2018 Audi Trucks Q5 even when the size looks correct on paper. Aftermarket wheels, different wheel widths, suspension changes, lowering, or body modifications can all affect clearance and may alter whether 235/60R18, 235/55R19, or 255/45R20 remains the appropriate working fitment.
A changed vehicle should be checked as it sits, not only by trim name. Measure the actual wheel diameter, confirm wheel width, and inspect steering and fender clearance before replacing tires. That extra step matters most on Q5s wearing 20-inch wheels, where appearance upgrades often go hand in hand with fitment changes.
What should I inspect before driving a 2018 Audi Trucks Q5 on new tires?
Before putting a 2018 Audi Trucks Q5 back into regular road use on new tires, inspect the wheels for damage, verify the tire size matches the wheel diameter, and make sure the tires are mounted and inflated correctly. It is also worth checking alignment condition, brake clearance, and general suspension wear if the vehicle has seen curb impacts or uneven tire wear before.
A short road test should confirm there is no rubbing, vibration, or steering interference through the full range of travel. Recheck inflation after the first drives and keep an eye on early wear patterns. Catching a wheel or suspension issue early is much easier than discovering it after the new tires have already worn unevenly.
How often should tires on a 2018 Audi Trucks Q5 be inspected?
Tires on a 2018 Audi Trucks Q5 should be inspected regularly, not just at replacement time. Look over tread wear, cuts, punctures, sidewall damage, and signs of air loss on a routine basis, and inspect them more closely before longer trips or after any impact with potholes, curbs, or road debris.
Consistent checks matter because a modern crossover like the Q5 can hide developing problems until they affect ride quality or handling. It also helps to monitor wear across all four tires, since uneven patterns can point to alignment or suspension issues. Regular pressure checks remain one of the simplest and most useful habits.
