2019 Acura Trucks Tire Fitment Guide

2019 Acura Trucks vehicles use five model-specific radial sizes across the MDX and RDX. The MDX uses 245/50R20, 245/60R18, and 265/45R20, while the RDX uses 255/45R20 and 235/55R19. Those sizes mount on 18-, 19-, or 20-inch wheels depending on model and wheel package, so there is no single year-wide Acura Trucks tire size for 2019.

That means year and make alone are not enough to choose a tire for a 2019 Acura Trucks vehicle. Start by confirming whether you have an MDX or an RDX, then verify the actual wheel diameter on the vehicle or the door-jamb placard. Once the model and wheel size are confirmed, it becomes much easier to narrow down the correct replacement tire family and avoid choosing a size meant for the other Acura crossover.

On a 2019 Acura Trucks MDX, 245/50R20 is a metric radial size. The 245 is the nominal section width in millimeters, 50 is the aspect ratio, R identifies radial construction, and 20 is the wheel diameter in inches. That combination belongs to an MDX fitment and should not be treated as interchangeable with the MDX's 18-inch setup or the other 20-inch size used elsewhere in the lineup.

The practical value of decoding that size is simple: the wheel diameter is fixed at 20 inches, and the tire's width and profile are part of the intended overall package. If your MDX currently wears 20-inch wheels, this may be one of the relevant sizes, but you should still match the exact size already on the vehicle or the factory placard. Mixing this with another diameter requires a wheel change, not just a different tire.

No, 2019 Acura Trucks models do not use the same tire size. The MDX and RDX each have their own fitments, and even within the MDX there are multiple sizes tied to different wheel packages. The RDX also splits between a 19-inch and a 20-inch size, so the model and wheel package both matter.

That difference matters because many modern crossover tire sizes can look close at a glance while still being completely wrong for the wheel on the vehicle. A buyer comparing the MDX and RDX should treat them as separate fitment paths rather than assuming a shared Acura luxury-SUV size. Checking the sidewall on the current tire, the factory placard, and the wheel diameter before purchase is the quickest way to stay on the correct path.

For 2019 Acura Trucks fitments with active product coverage, 255/45R20 for the RDX is available in both Blackwall and RWL styles. BFGoodrich and Nitto offerings in that size use Blackwall styling, while Pro-Trac offers an RWL version. All of those are radial tires built around a modern performance-oriented size format.

Most 2019 Acura Trucks owners will prefer Blackwall because it aligns naturally with the understated, contemporary appearance expected on a late-model Acura crossover. An RWL tire changes the visual tone and gives the vehicle a more assertive aftermarket look. If appearance matters as much as fitment, decide early whether you want a factory-like presentation or a more custom sidewall treatment before narrowing down the exact product.

2019 Acura Trucks coverage in 255/45R20 includes BFGoodrich, Nitto, and Pro-Trac. BFGoodrich appears with multiple g-Force family choices, Nitto appears with the NT555 G2, and Pro-Trac offers the Street Pro III. All of them are radial products for the RDX's 20-inch fitment.

That brand mix gives an RDX owner a choice between familiar mainstream performance names and a more style-forward option with raised white letters. The best way to narrow them down is to compare the look you want, the exact speed rating on the sidewall, and any load information that matters for your driving habits. Matching the brand to your intended use is more useful than choosing by name alone.

In 255/45R20 for the 2019 Acura Trucks RDX, BFGoodrich appears in Blackwall form through g-Force family products, while Pro-Trac appears as the Street Pro III in RWL form. The BFGoodrich products carry a 101W service description in the examples here, and the Pro-Trac version uses the same 255/45ZR20 size family with a different sidewall presentation. Weight is also very close, with BFGoodrich examples at 32 pounds and the Pro-Trac example at 31.97 pounds.

The practical difference is less about basic fitment and more about appearance and product character. A Blackwall BFGoodrich keeps the look subtle and contemporary, while the Pro-Trac RWL version makes the sidewall part of the vehicle's visual statement. If your RDX is a daily driver with a factory-like appearance, many owners will lean toward Blackwall styling; if you want a more customized look, the RWL option stands out immediately.

Rim-width guidance appears for the 2019 Acura Trucks RDX in 255/45R20, where BFGoodrich examples specify an 8.0- to 9.5-inch approved rim-width range. That same size also mounts on a 20-inch wheel diameter. The other 2019 Acura Trucks sizes here are tied to 18-, 19-, or 20-inch wheel diameters, but their rim-width ranges are not all shown in the same detail.

Rim width matters because the correct tire size still needs the correct wheel width to support the intended sidewall shape and tread profile. If your RDX uses 255/45R20, compare your wheel width to the product's approved range before final selection. For MDX and the remaining RDX size, it is smart to verify both wheel diameter and wheel width against the actual wheel or manufacturer reference before mounting a replacement tire.

The 2019 Acura Trucks products visible in 255/45R20 do not carry tube-type markings, and their size notation follows modern radial practice. Nothing in that size points toward an inner-tube-only construction. That aligns with what most buyers would expect on a 2019 Acura luxury crossover using contemporary one-piece road wheels.

Even so, the wheel condition and valve-stem condition still matter. If the vehicle has original wheels, inspect the bead seats for corrosion, make sure the valve stems are fresh, and confirm the exact tire's sidewall marking before installation. A late-model SUV normally points toward tubeless use, but the final authority should be the product's own sidewall and the wheel's condition rather than assumption.

A 2019 Acura Trucks vehicle should be stored on clean, properly inflated tires in a cool, dry space away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing sources. Keep the tires off contaminated surfaces such as oil-soaked concrete, and move the vehicle periodically if it sits for long stretches. Modern radial tires generally resist flat-spotting better than older bias-ply designs, but long static storage can still stress any tire.

If the vehicle will sit for months, inflate to the recommended storage pressure guidance from the vehicle or tire maker and consider tire cradles or stands to reduce prolonged contact loading. A quick monthly check for pressure loss and visible cracking goes a long way toward preserving the tires. Storage habits often matter more to longevity on a low-mileage luxury SUV than tread wear ever will.

On a 2019 Acura Trucks vehicle, age matters as much as mileage and often more. A sensible collector and enthusiast rule is to begin evaluating tires closely around five to seven years of age and to treat the ten-year mark as a serious replacement point regardless of remaining tread. The DOT date code on the sidewall tells you when each tire was manufactured.

That timeline is especially important on an MDX or RDX that sees low annual mileage, because a tire can look usable while aging internally. Heat cycles, sunlight, storage conditions, and underinflation all affect service life. If the tires are several years old, have them inspected before long trips even if the tread depth looks healthy, and replace as a set when age-related deterioration becomes a concern.

Tires on a 2019 Acura Trucks vehicle should be inspected before every drive and more thoroughly before any extended trip. Look for cuts, bulges, punctures, irregular wear, sidewall cracking, and pressure loss, and make sure the tread is wearing evenly across the tire. A modern radial on a premium crossover should also be checked for signs of curb impact or alignment-related shoulder wear.

Routine inspection helps catch small issues before they become vibration, handling, or safety problems at highway speed. On an SUV that may carry passengers and cargo, pressure accuracy matters just as much as tread condition. It is also wise to inspect the spare, since a neglected spare can turn a minor roadside problem into a major inconvenience when you finally need it.

Yes, the radial fitments used on 2019 Acura Trucks vehicles are appropriate for modern road use when they are the correct size, properly inflated, and in sound condition. In the active 255/45R20 RDX fitment, W-rated products appear, and a W speed rating carries a 168 mph ceiling. In real-world use, the more important limits are usually tire age, inflation, alignment, road damage, and the overall mechanical condition of the vehicle rather than the raw speed symbol alone.

Highway confidence comes from choosing the exact size your MDX or RDX requires and keeping the tires maintained, not from chasing the highest speed letter. An older set of tires with good tread can still be a poor highway choice if the rubber has hardened or cracked. Before longer freeway travel, check pressures cold, inspect the sidewalls, and make sure the tires match side to side on the same axle.

Inflation pressure on a 2019 Acura Trucks vehicle should follow the factory vehicle placard or owner's manual for the exact model, wheel package, and load condition. One 255/45R20 BFGoodrich option for the RDX carries a maximum load and pressure figure of 1819 pounds at 51 psi, but that is a tire-rating figure rather than a universal operating pressure for every 2019 Acura Trucks fitment. Pressure should never be transferred from one size to another just because the vehicles are from the same make and year.

Use the Acura placard as the starting point for day-to-day service, then compare it with the tire manufacturer's guidance if you move to a different product line in the same size. Check pressure cold, not after driving, and revisit it with seasonal temperature swings. Proper inflation protects ride quality, tread wear, handling balance, and load capacity all at once.

Before a longer drive in a 2019 Acura Trucks vehicle, inspect every tire for cracking, cuts, bulges, punctures, uneven wear, and correct cold pressure. Confirm that all four tires are the right size for the model, check the valve stems, and make sure the spare is inflated and usable. If the vehicle has been sitting, pay special attention to age-related rubber hardening and any vibration that may appear in the first few miles.

Tires are only one part of the preparation, but they are one of the easiest places to prevent roadside trouble. On a modern Acura crossover, a pre-trip check should also include brakes, fluids, battery health, and suspension condition. Taking ten minutes to do that inspection is far easier than diagnosing a handling problem or blowout risk once the trip is already underway.