2019 Audi Trucks Tire Fitment Guide

2019 Audi Trucks vehicles use 17 metric radial sizes across six models. Q3 uses 235/55R18, 235/50R19, and 255/40R20; Q5 uses 235/60R18, 235/55R19, and 255/45R20; Q7 uses 255/60R18, 255/55R19, 285/45R20, 285/40R21, and 285/35R22; Q8 uses 275/50R20, 285/45R21, and 285/40R22; SQ5 uses 255/45R20 and 255/40R21; e-tron Quattro uses 255/55R19, 255/50R20, and 265/45R21. Rim diameters across the range are 18, 19, 20, 21, and 22 inches.

That spread means 2019 Audi Trucks buyers should start with the exact model and wheel diameter rather than assuming one Audi SUV size crosses over to another. Only two sizes are shared at all: 255/45R20 between Q5 and SQ5, and 255/55R19 between Q7 and e-tron Quattro. Once the model and size are confirmed, then it makes sense to compare brand, sidewall style, and speed rating within the correct fitment.

On a 2019 Audi Trucks tire, 235/55R18 is a metric radial code. The 235 is the tire’s nominal section width in millimeters, 55 is the aspect ratio as a percentage of that width, R means radial construction, and 18 is the wheel diameter in inches. Within the 2019 Audi Trucks range, that specific size belongs to the Q3.

Reading the code correctly matters because a 235/55R18 is not interchangeable with a 235/50R19 or 255/40R20 even though those sizes may appear on the same model family. The wheel diameter must match exactly, and the tire’s width and sidewall profile change with the rest of the code. If your Q3 has 18-inch wheels, 235/55R18 is the starting point; if it has a different wheel package, the size changes with it.

No. 2019 Audi Trucks models do not share one universal tire size, and most fitments are tied to a specific model and wheel package. Q3, Q5, Q7, Q8, SQ5, and e-tron Quattro each have their own size mix, with only 255/45R20 shared by Q5 and SQ5 and 255/55R19 shared by Q7 and e-tron Quattro.

That matters because choosing by year and make alone can easily put you into the wrong rim diameter or the wrong overall fitment range. Audi used different wheel packages to shape each model’s road manners and appearance, especially as the lineup moved from compact crossover to larger luxury SUV. Checking the exact model badge and the current tire sidewall before ordering is the most efficient way to avoid a mismatch.

Current 2019 Audi Trucks product coverage shows two sidewall styles in the sizes with active product examples: Blackwall and RWL. The 255/40R20 and 285/35R22 options are Blackwall, while 255/45R20 is available in both Blackwall and RWL depending on the brand and series. That means the broadest appearance choice sits with the 20-inch Q5 and SQ5 size.

For a late-model Audi SUV, Blackwall is the more factory-like visual direction and generally the cleaner match for modern European luxury styling. RWL can create a more assertive aftermarket look, which some owners prefer on sport-oriented builds. If appearance matters as much as fitment, compare the exact sidewall treatment within your correct size before narrowing to speed rating or brand.

BFGoodrich, Nitto, and Pro-Trac appear in the current 2019 Audi Trucks product mix. BFGoodrich covers 255/40R20 and 255/45R20, Nitto covers 255/45R20 and 285/35R22, and Pro-Trac appears in 255/45R20. Among the sizes with product coverage, 255/45R20 has the widest brand spread.

Brand choice matters most after the size is settled, because Audi’s model-specific fitments leave very little room for substitution across the lineup. A Q5 or SQ5 owner with 255/45R20 has more freedom to compare appearance and speed rating than a Q7 owner using 285/35R22, where coverage is narrower. If you are cross-shopping brands, compare them within the same size rather than across different Audi models.

In 255/45R20 for 2019 Audi Trucks, BFGoodrich appears in g-Force Comp-2 A/S and g-Force Sport Comp-2 form, both with a 101W service description and an 8.0- to 9.5-inch rim-width range; one BFGoodrich example also carries a 1,819-pound maximum load at 51 psi. Nitto appears as the NT555 G2 in 255/45ZR20XL 105W form, also with a W speed rating. BFGoodrich examples shown here are Blackwall, while the Nitto example is also Blackwall.

The practical difference is less about basic fitment and more about the specific product specification inside the same size. Q5 and SQ5 owners should compare service description, load index, and any rim-width guidance that applies to their wheel before choosing between brands. If sidewall appearance matters, Pro-Trac adds an RWL alternative in this size, which gives the 255/45R20 fitment the most visual variety.

Rim-width guidance appears for the 2019 Audi Trucks sizes that currently have detailed product examples. The 255/40R20 BFGoodrich fitment suits 8.5- to 10-inch rims, and the 255/45R20 BFGoodrich fitments suit 8.0- to 9.5-inch rims. All of those mount on 20-inch wheels, while the 285/35R22 example confirms a 22-inch rim diameter but does not add a rim-width range here.

That means wheel diameter alone is not enough when comparing 20-inch fitments, especially if your Audi is running aftermarket wheels. A tire can share the same 20-inch rim diameter yet still be intended for a different rim-width window. Before choosing a tire, verify the wheel’s actual width stamping or manufacturer specification so the tire and wheel work together as intended.

The current 2019 Audi Trucks product examples point to modern tubeless radial construction rather than tube-type fitments. The sizes with visible service descriptions use contemporary metric radial formats such as 255/45ZR20 and 285/35R22XL, and there are no tube-type markings in the examples shown here. That aligns with what buyers would expect from a 2019 Audi SUV platform.

Even so, the right habit is to inspect the actual tire sidewall and confirm the wheel’s condition before installation, especially on replacement wheels or custom builds. A modern Audi wheel and tire combination is ordinarily a tubeless setup, but a damaged bead seat or incompatible wheel can still create sealing issues. Valve stem condition should also be checked whenever new tires are mounted.

A 2019 Audi Trucks SUV should be stored on clean, properly inflated tires in a cool, dry area away from direct sunlight, electric motors, welders, and other ozone sources. Long static storage is easier on the tires if the vehicle is moved periodically so the same contact patch is not carrying the load for months at a time. Clean floors and stable temperature help preserve both the rubber and the finish of the wheels.

Owners who drive seasonally should check pressures before and after storage, since even modern radials can lose air over time. If the vehicle will sit for an extended period, some collectors use tire cradles or stands to reduce stress on the carcass. The goal is not just preventing visible cracking, but also preserving ride quality and avoiding vibration when the Audi goes back into regular use.

On a 2019 Audi Trucks vehicle, tire age matters at least as much as tread depth. A good rule is to begin evaluating tires carefully once they are in the five- to seven-year range and to treat around ten years as the point where replacement deserves serious consideration, even if the tread still looks usable. The DOT date code on the sidewall is the quickest way to verify the tire’s age.

That matters especially for SUVs that may see limited mileage but still carry significant weight and highway speeds. A tire can age out long before it wears out, particularly if it has seen heat cycles, underinflation, or long storage periods. If your Audi still has older tires with good-looking tread, age and condition should still drive the replacement decision.

Tires on a 2019 Audi Trucks vehicle should be inspected before every drive and more thoroughly before any extended highway trip. Check for cuts, bulges, sidewall cracking, uneven wear, punctures, and pressure loss, and inspect the valve stems as part of the same routine. Modern low-profile SUV fitments can hide inner-edge wear, so a close look at the full tread width is worthwhile.

Regular inspection helps catch problems early, especially on larger 20-, 21-, and 22-inch wheel packages where impact damage from potholes may not be obvious at a glance. If the vehicle has been parked for weeks, verify pressures cold before driving. A quick walk-around takes very little time and often reveals issues that would be easy to miss once the Audi is back on the road.

Yes, the radial tire examples currently represented for 2019 Audi Trucks are suitable for highway use when they are the correct size, properly inflated, and in sound condition. The visible speed ratings include W, with a 168 mph ceiling, and Y, with a 186-plus mph ceiling, depending on the product and size. Those ratings are well beyond normal U.S. highway speeds.

Real-world safety still depends on the whole vehicle, not just the speed letter on the sidewall. Alignment, suspension condition, braking performance, load carried, and tire age all matter more in ordinary driving than the theoretical top-speed ceiling. For a modern Audi SUV, the safest approach is matching the exact size, confirming the service description, and keeping the tires in healthy, properly maintained condition.

Inflation pressure for 2019 Audi Trucks should follow the vehicle’s factory placard or owner’s manual first, because Audi set pressure targets around the exact model, load condition, and wheel package. The product examples here show rated pressure figures for some sizes, including 1,819 pounds at 50 psi for 255/40R20 and 1,819 pounds at 51 psi for one 255/45R20 BFGoodrich example. Those figures describe the tire’s rated load relationship, not a one-size-fits-all vehicle setting.

That distinction is important because a Q3, Q5, SQ5, Q7, Q8, and e-tron Quattro do not all use the same pressures, even when a few sizes overlap. Use the factory recommendation for day-to-day operation unless the tire manufacturer and vehicle application call for something different. Avoid copying a pressure from one Audi model or one tire size to another without verifying the correct application.

Before a longer drive in a 2019 Audi Trucks vehicle, inspect each tire for cracking, cuts, punctures, bulges, unusual wear, and proper cold inflation pressure. Check the spare if the vehicle carries one, and look over the valve stems and wheel lips for damage, especially on larger-diameter fitments with shorter sidewalls. Tread depth should be even across the tire rather than worn heavily on one edge.

A longer trip is also the right time to think beyond the tires themselves. Late-model Audi SUVs can mask minor tire issues until speed and heat build on the highway, so it pays to combine the tire check with a broader inspection of brakes, fluids, and suspension condition. Catching a pressure or wear problem in the driveway is far easier than dealing with vibration or a failure mid-trip.