2020 Audi Trucks Tire Fitment Guide

2020 Audi Trucks vehicles use 18 distinct tire sizes across 10 model lines. Q3 uses 235/55R18, 235/50R19, or 255/40R20; Q5 uses 235/60R18, 235/55R19, or 255/45R20; Q5 PHEV uses 235/55R19 or 255/45R20; Q7 uses 255/55R19, 285/45R20, 285/40R21, or 285/35R22; Q8 uses 275/50R20, 285/45R21, or 285/40R22; RS Q8 uses 295/40R22 or 295/35R23; SQ5 uses 255/45R20 or 255/40R21; SQ7 uses 285/40R21; SQ8 uses 285/45R21 or 285/40R22; e-tron Sportback uses 255/50R20 or 265/45R21.

That spread means there is no one universal 2020 Audi Trucks tire size. Rim diameters run from 18 through 23 inches, so the fastest way to narrow the correct fitment is to identify the exact model and then confirm the wheel diameter currently on the vehicle. Even within the same model family, Audi often paired different wheel packages with different section widths and aspect ratios, so matching the full size code matters more than matching brand or tread alone.

On a 2020 Audi Trucks application, 255/45R20 is a metric radial size. The 255 is the nominal section width in millimeters, 45 is the aspect ratio, R means radial construction, and 20 is the wheel diameter in inches. Within the 2020 Audi Trucks range, this size is used on the Q5, Q5 PHEV, and SQ5, so it is one of the more widely shared fitments in the lineup.

Reading the code correctly helps prevent a common mistake: assuming any 20-inch Audi SUV tire will interchange. A 255/45R20 differs from a 275/50R20 or 285/45R20 in both width and sidewall profile, even though all three mount on 20-inch wheels. Once the size is confirmed, the next step is comparing sidewall appearance and speed rating, because 255/45R20 products span more than one brand and more than one speed category.

No. 2020 Audi Trucks models do not share a single common tire size across the full lineup. Some fitments overlap within related models, such as 235/55R19 between the Q5 and Q5 PHEV, 255/45R20 across the Q5, Q5 PHEV, and SQ5, 285/40R21 between the Q7 and SQ7, and 285/45R21 plus 285/40R22 between the Q8 and SQ8, but most sizes are model-specific.

That matters because an Audi owner who knows only the year and make can still end up choosing the wrong tire if the model is not confirmed first. It also means wheel diameter alone is not enough, since several 20-, 21-, and 22-inch sizes appear with different widths and aspect ratios. If the vehicle has been fitted with a non-original wheel package, verify the size on the current sidewall and compare it to the model’s known fitment range before moving forward.

Sidewall style variety is concentrated in the 255/45R20 size for 2020 Audi Trucks vehicles. That size is available in both Blackwall and RWL form, while the currently supported 255/40R20 and 285/35R22 products are Blackwall only. Since every fitment here is a modern metric radial for a 2020 model-year Audi SUV, Blackwall is the mainstream late-model appearance, while RWL gives a more performance-oriented aftermarket look.

For most Q5, Q5 PHEV, and SQ5 owners using 255/45R20, the sidewall decision is mainly about appearance rather than era-correct restoration. Buyers who want a clean OEM-style presentation usually stay with Blackwall, while someone leaning toward a sportier visual treatment may prefer the raised white letters. The key is to keep appearance secondary to the correct size, load capability, and speed rating for the specific vehicle and driving use.

The supported product range for 2020 Audi Trucks includes BFGoodrich, Nitto, and Pro-Trac. BFGoodrich appears in 255/40R20 and 255/45R20, Nitto appears in 255/45R20 and 285/35R22, and Pro-Trac appears in 255/45R20. All of these currently supported products are radial tires aimed at modern road use rather than vintage-style reproduction applications.

Brand choice becomes most useful after the correct size is narrowed, because not every brand appears in every fitment. The 255/45R20 size gives the broadest brand spread and is the best example of how one Audi fitment can support multiple product personalities, sidewall treatments, and speed categories. A Q7 owner needing 285/35R22 or a Q3 owner needing 255/40R20 has a much narrower pool, so size confirmation should come before comparing brand preference.

Within 255/45R20 for 2020 Audi Trucks vehicles, BFGoodrich and Nitto both offer radial performance-oriented products, but their details differ. BFGoodrich appears in W-rated form, which carries a 168 mph ceiling, and includes products with an 8.0- to 9.5-inch rim width range; one BFGoodrich example also shows a maximum load capacity of 1,819 pounds at 51 psi. Nitto appears in a Y-rated form with a 186-plus mph ceiling, and the available Nitto example is marked 255/45ZR20XL 105W in the size field.

For a Q5, Q5 PHEV, or SQ5 owner, that means the comparison is less about whether the size fits and more about the exact product specification you want within the same fitment. Speed category, sidewall appearance, and wheel width compatibility are the useful points to compare at this stage. Check the specific tire’s sidewall marking and its approved wheel range against the wheels on the vehicle rather than assuming every 255/45R20 behaves the same.

Rim width guidance is available for some of the supported 2020 Audi Trucks sizes. The 255/40R20 BFGoodrich application fits 8.5- to 10-inch rims, while the BFGoodrich 255/45R20 applications fit 8.0- to 9.5-inch rims. All of those examples mount on 20-inch-diameter wheels, but width compatibility still matters because the tire must be matched to the wheel’s measured width, not just its diameter.

That distinction is especially important when an Audi has aftermarket wheels or when you are replacing tires on a used vehicle with an unknown wheel package. A 20-inch wheel that is too narrow or too wide for the tire can affect sidewall shape, steering response, and wear behavior. Before ordering, confirm the wheel’s actual width and compare it with the approved range for the specific tire you plan to use.

The supported 2020 Audi Trucks products shown here are modern radial tires with tubeless-style sizing, and none carry a tube-type marking. That makes them tubeless by design in normal late-model Audi SUV use, provided the wheel itself is a suitable tubeless wheel in sound condition. This applies to the currently supported 255/40R20, 255/45R20, and 285/35R22 products.

Even with tubeless tires, the wheel condition still matters. Damaged bead seats, corrosion, or a compromised valve stem can cause air-loss complaints that look like a tire problem but start at the wheel. If the vehicle has aftermarket wheels, verify that the wheel is intended for tubeless radial use and inspect the valve hardware during installation rather than focusing only on the tire size.

No single set of original 2020 Audi Trucks wheels covers every tire size in the range, because these vehicles use multiple rim diameters from 18 through 23 inches. Some models share the same diameter and even the same full size code, such as Q5 and Q5 PHEV in 235/55R19 or Q8 and SQ8 in 285/40R22, but that does not make all Audi SUV wheels interchangeable.

The practical approach is to confirm the wheel diameter first, then the exact size code, and then the wheel width if that information is available. A 20-inch Audi wheel from one model may still be wrong for another if the intended tire width or sidewall profile differs. Staying with the exact model-and-size combination is the safest path unless a knowledgeable Audi specialist has already verified an alternate wheel and tire package.

A stored 2020 Audi Trucks vehicle should be kept out of direct sunlight, away from ozone-producing equipment such as electric motors or battery chargers, and off damp surfaces when possible. These are all radial tires, so they generally tolerate storage better than old-style bias-ply tires, but long periods of inactivity can still encourage pressure loss, spotting, and sidewall aging if the vehicle sits in one place for months.

For longer storage, inflate the tires to the appropriate cold pressure for the vehicle, move the vehicle periodically, or use stands if the storage period will be extended and the setup allows it safely. Clean, climate-moderated storage pays off on large-diameter modern SUV tires because replacement costs can be substantial and some fitments are more specialized than mainstream passenger-car sizes.

On a 2020 Audi Trucks vehicle, tire age matters at least as much as tread depth. A good rule is to begin evaluating tires closely once they reach the five- to seven-year range and to treat around 10 years from the DOT date code as a strong replacement threshold, even if the tread still appears serviceable. Collector-style low mileage, seasonal driving, or light use does not stop rubber from aging.

That is especially relevant for premium SUVs that may accumulate fewer miles than commuter cars yet still carry heavy curb weights and high-speed-rated tires. A lightly used RS Q8, SQ8, or Q7 can have plenty of tread left and still be overdue by age. Reading the DOT date code and pairing it with regular inspections gives a more accurate replacement timeline than mileage alone.

Tires on a 2020 Audi Trucks vehicle should be checked before every drive and again before any longer highway trip. Look for cracking, cuts, bulges, punctures, uneven wear, and signs of air loss, and confirm cold inflation pressure while the tires are not heat-soaked from recent driving. On a late-model Audi SUV, uneven wear can also point to alignment or suspension issues rather than a tire defect alone.

A quick inspection matters even more on vehicles running lower-profile 20-, 21-, 22-, or 23-inch fitments because there is less sidewall height to absorb impacts. It is also wise to inspect the spare, if equipped, along with valve stems and wheel condition. Catching a slow leak or impact-related sidewall damage before a trip is far easier than dealing with it on the road.

Yes, the supported 2020 Audi Trucks products are modern radial tires intended for contemporary road use, and the available speed ratings are appropriate for highway travel when the tire is properly sized, inflated, and in good condition. The supported products here include W-rated tires with a 168 mph ceiling and Y-rated tires with a 186-plus mph ceiling. Those ratings far exceed normal U.S. highway speeds, but they do not override load limits, inflation requirements, or the condition of the vehicle itself.

For real-world safety, the bigger concern is usually using the exact correct size and maintaining the vehicle properly. A Q7, SQ5, or RS Q8 with the wrong width, a damaged wheel, poor alignment, or aged rubber can be less confidence-inspiring than a properly maintained vehicle on a lower-maximum-speed tire. Treat the speed rating as one piece of the overall package, not as a substitute for correct fitment and regular inspection.

Inflation pressure on a 2020 Audi Trucks vehicle should follow the factory vehicle placard or owner’s manual for the specific model and wheel package, because Audi calibrates pressure around the vehicle’s weight, suspension, and intended load. Tire-level pressure figures shown on some products are maximum-rated values tied to that tire’s load capacity, such as 1,819 pounds at 50 psi for one 255/40R20 application and 1,819 pounds at 51 psi for one 255/45R20 application.

Those maximum figures are not a blanket recommendation for every 2020 Audi Trucks model using a similar size. A Q3, Q5, SQ5, and Q7 can require different operating pressures even when their tires look close at a glance. Use the vehicle placard as the starting point for daily driving, then confirm that the selected tire’s load and pressure capabilities are appropriate for the application.

Before a longer drive in a 2020 Audi Trucks vehicle, inspect each tire for sidewall cracking, cuts, bulges, punctures, irregular tread wear, and any sign of impact damage. Confirm cold inflation pressures, look over the valve stems, and make sure the spare tire or mobility setup is serviceable. On larger Audi SUVs and performance variants, wheel condition matters too, since bent or cracked wheels can create vibration and air-loss issues that mimic tire trouble.

A tire check should be part of a broader pre-trip review that also covers brakes, fluids, battery condition, and suspension health. That is especially important for models such as the Q7, SQ7, SQ8, and RS Q8, where weight, power, and large wheel packages place real demands on the tire. If anything feels off during the inspection or the first few miles, address it before committing to a longer highway run.