The 2018 Audi Trucks Q3 sits in the compact luxury crossover segment, blending Audi road manners with the taller stance and everyday utility many drivers want in a smaller SUV. It is a modern vehicle with modern radial fitment, and this Q3 uses either 235/50R18 or 255/40R19 depending on wheel setup. That creates a straightforward but important choice between 18-inch and 19-inch fitment, with available tires spanning blackwall performance-oriented options as well as redline and raised white letter styles. The right selection comes down to confirming the wheel diameter already on the vehicle, then matching the tire's look, series, and intended road use to the way the Q3 is driven.
Which Tire Size Is Right for The 2018 Audi Trucks Q3
The 2018 Audi Trucks Q3 uses two primary tire sizes, and the first step is confirming whether the vehicle is on 18-inch or 19-inch wheels. Both sizes are radial fitments, and both appear across the covered Premium and Premium Plus sub-models. Once wheel diameter is confirmed, the decision shifts to tire character, sidewall style, and product details within the correct size.
235/50R18 is a metric radial size in which 235 identifies the section width in millimeters, 50 is the aspect ratio, R denotes radial construction, and 18 is the wheel diameter in inches. On the 2018 Audi Trucks Q3, this size suits the 18-inch wheel setup and keeps the vehicle in a modern radial format. Available choices include BFGoodrich, Nitto, and Pro-Trac, with blackwall, redline, and RWL sidewall treatments across several tire series. It is the size to evaluate when the Q3 is riding on 18-inch wheels and the goal is balancing correct fitment with appearance and road-use priorities.
255/40R19 is a metric radial size where 255 is the nominal section width in millimeters, 40 is the aspect ratio, R marks radial construction, and 19 indicates the wheel diameter in inches. For the 2018 Audi Trucks Q3, this size corresponds to the 19-inch wheel fitment and gives the vehicle a lower-profile tire presentation than the 18-inch alternative. BFGoodrich and Pro-Trac options are available here as well, with blackwall, redline, and RWL styles appearing in the lineup. This size deserves a close look when the vehicle already has 19-inch wheels and the buyer wants to compare styling and tire-series differences within that setup.
Fitment across the covered 2018 Audi Trucks Q3 sub-models is straightforward because both Premium and Premium Plus can use the same two tire sizes. The key is not trim level alone, but confirming whether the vehicle is equipped with 18-inch or 19-inch wheels before selecting tires.
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2018 Audi Trucks Q3 Premium
The 2018 Audi Trucks Q3 Premium can use either of the Q3's two radial tire sizes, depending on the wheel setup on the vehicle. That makes wheel-diameter confirmation the main step, followed by comparing available sidewall styles and tire series in the correct size.
The 2018 Audi Trucks Q3 Premium Plus also uses the same two radial fitment paths found on the Q3 range. Tire selection comes down to verifying the existing 18-inch or 19-inch wheel package, then choosing the product style and specifications that suit the vehicle's use.
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 Q3 Tires for Sale
Available 2018 Audi Trucks Q3 tires cover both 235/50R18 and 255/40R19 in radial construction, with options from BFGoodrich, Nitto, and Pro-Trac. Buyers can compare blackwall, redline, and RWL sidewalls along with tire series such as g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and Street Pro III.
These FAQs focus on the two tire sizes used on the 2018 Audi Trucks Q3, how wheel diameter affects fitment, and how to compare radial tire options by brand, sidewall style, appearance, and road-use needs.
Tire Size & Fitment
What tire size fits a 2018 Audi Trucks Q3?
The 2018 Audi Trucks Q3 uses two tire sizes: 235/50R18 and 255/40R19. Both are radial sizes, and both are used across the covered Premium and Premium Plus sub-models. The difference is tied to wheel setup rather than a unique construction change between trims.
The practical step is to confirm whether the vehicle has 18-inch or 19-inch wheels before choosing a tire. A Q3 with 18-inch wheels needs the 235/50R18 fitment, while a Q3 with 19-inch wheels needs 255/40R19. Checking the current tire sidewall and wheel diameter is especially important if the vehicle has been fitted with different wheels from stock.
What size rim does a 2018 Audi Trucks Q3 use?
The 2018 Audi Trucks Q3 uses either an 18-inch or 19-inch rim, depending on which tire size is on the vehicle. The 235/50R18 fitment uses an 18-inch rim, while the 255/40R19 fitment uses a 19-inch rim. Both belong to modern radial tire setups.
That rim diameter difference matters because tire size selection starts with the wheel, not just the model name. A tire built for an 18-inch wheel cannot be mounted on a 19-inch wheel, and the reverse is also true. Looking at the sidewall of the current tire is often the quickest way to confirm the wheel diameter already fitted to the Q3.
Do all 2018 Audi Trucks Q3 sub-models use the same tire size?
The covered 2018 Audi Trucks Q3 sub-models share the same tire-size options rather than each having a unique fitment. Both the Premium and Premium Plus can use 235/50R18 or 255/40R19, and both sizes are radial. The deciding factor is the wheel package on the individual vehicle.
That means trim badge alone does not settle the fitment question. One Premium may be on 18-inch wheels while another is on 19-inch wheels, and the same can apply to a Premium Plus. Before replacing tires, verify the actual wheel and tire combination on the vehicle so the new set matches its present setup and clears the suspension and bodywork properly.
Choosing the Right Tire
What should I consider when choosing a 2018 Audi Trucks Q3 tire?
Start with the correct size for the wheel already on the vehicle: 235/50R18 for 18-inch wheels or 255/40R19 for 19-inch wheels. From there, compare radial tire series, sidewall treatment, rim-width suitability, load figures where stated, and the overall character of the tire lineup available in that size.
A Q3 used mainly for daily road driving may call for a different selection emphasis than one built around a more aggressive look. Blackwall tires keep a cleaner modern presentation, while redline or RWL styles create a more distinctive visual statement. It also helps to compare wheel width against the tire's approved range whenever that specification is given.
What sidewall styles are available for 2018 Audi Trucks Q3 tires?
Sidewall choices for the 2018 Audi Trucks Q3 include blackwall, redline, and RWL, depending on size and tire series. Blackwall appears across several BFGoodrich and Nitto performance-oriented options, while Pro-Trac Street Pro III adds redline and raised white letter styling in both 18-inch and 19-inch fitments.
The sidewall decision is mostly about appearance once the correct size has been established. Blackwall keeps the look understated and contemporary, while redline and RWL make the tire more visually prominent. Owners trying to shape the Q3's stance or style should compare sidewall treatment only after confirming the vehicle's actual wheel diameter and intended tire series.
What brands offer tires for the 2018 Audi Trucks Q3?
Tires for the 2018 Audi Trucks Q3 are available from BFGoodrich, Nitto, and Pro-Trac in the covered sizes. Across 235/50R18 and 255/40R19, the lineup includes several radial series such as g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, Nitto NT555 G2, and Street Pro III.
Brand selection should still come after the fitment basics are settled. Once the correct wheel diameter and tire size are confirmed, compare each brand's available series, sidewall styling, and any published load or rim-width details that matter to the vehicle's setup. The strongest comparison is usually between products in the same size rather than between brands in different fitments.
Restoration & Appearance
Which tire should I choose for a period-style 2018 Audi Trucks Q3?
A period-style approach on a 2018 Audi Trucks Q3 still begins with the correct modern radial size for the wheel package already on the vehicle. From there, appearance becomes the bigger distinction, especially when comparing blackwall tires with redline or RWL options offered in both primary sizes.
Since this is a modern crossover rather than a vintage restoration candidate, the appearance decision is more about visual character than strict originality. A cleaner, understated build may lean toward blackwall, while a more customized presentation may favor redline or raised white letter styling. Keeping the correct size and wheel match matters more than chasing a purely cosmetic effect.
How does tire construction affect the appearance of a restored 2018 Audi Trucks Q3?
On the 2018 Audi Trucks Q3, construction does not create a bias-ply versus radial appearance decision because both primary fitments are radial. The visual difference instead comes from profile, wheel diameter, and sidewall treatment. A 235/50R18 and a 255/40R19 can change the vehicle's stance simply because they belong to different wheel setups.
That makes appearance planning more straightforward than on an older collector vehicle. Owners can focus on whether the Q3 should retain a more restrained factory-inspired look or take on a more customized style through redline or RWL sidewalls. The smarter path is to confirm the wheels already on the vehicle and then compare tires that suit that exact setup.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Audi Trucks Q3?
Yes. A 2018 Audi Trucks Q3 may use either 235/50R18 or 255/40R19 in standard form, but wheel changes, altered offsets, suspension lowering, or other modifications can affect what works on the vehicle. Even when the tire size sounds familiar, the actual wheel and body clearance situation may no longer match a stock-style setup.
That is why modified vehicles should be checked more carefully before tire replacement. Confirm wheel diameter, wheel width, and the space available at the fenders and suspension components. Turning clearance and ride-height changes also matter, especially with wider wheel combinations. A tire in the correct nominal size still needs to suit the vehicle's actual physical setup.
What should I inspect before driving a 2018 Audi Trucks Q3 on new tires?
Before driving a 2018 Audi Trucks Q3 on new tires, inspect the wheel size, tire size, inflation condition, and general clearance around the suspension and body. It also helps to make sure the old tires did not mask issues such as uneven wear, damaged wheels, or alignment problems that could affect the new set.
A short initial road check is worthwhile after installation. Listen for rubbing, feel for vibration, and recheck air pressure once the tires have settled in. Looking at tread wear over the first several drives can also reveal whether the Q3 needs alignment or suspension attention. Those simple checks help protect both tire life and everyday driving quality.
How often should tires on a 2018 Audi Trucks Q3 be inspected?
Tires on a 2018 Audi Trucks Q3 should be inspected regularly, not just when replacement time arrives. Routine checks should include tread wear, cuts, bulges, cracking, and any sign of slow air loss. Because this Q3 can run two different wheel-and-tire packages, size and pressure consistency across the vehicle also deserve attention.
Inspection becomes even more important after pothole impacts, curb contact, wheel changes, or suspension work. A quick look at the sidewalls and tread every few weeks can catch developing issues early. On a vehicle used less often, tire age and storage conditions matter too, since rubber can deteriorate long before the tread appears worn out.
