2020 Acura Trucks brought together two of Acura’s most important luxury crossovers, the three-row MDX and the smaller, sportier RDX. Both models balanced everyday utility with the sharper steering, road manners, and upscale presentation that helped distinguish Acura in the premium SUV market. Tire sizing across 2020 Acura Trucks varies by model, with five radial sizes spread between two nameplates rather than one shared fitment across the range. The key step before choosing a tire is confirming whether you have an MDX or an RDX, then matching the correct size and wheel diameter to that specific model.
Which Tire Size Is Right for Your 2020 Acura Trucks
Five tire sizes are used across 2020 Acura Trucks, and they vary by model rather than being shared across the full range. Every size is a radial, so the real decision starts with confirming whether your vehicle is an MDX or an RDX and then verifying the correct rim diameter for that fitment. Understanding that distinction before choosing a product saves time and helps ensure the right match.
Year(s): 2020|Fit(s): MDX|Construction: Radial|Rim: 20-in rim
The 265/45R20 is a radial metric size with a 265 millimeter section width, a 45-series aspect ratio, and a 20-inch rim diameter. This MDX-specific size does not carry product coverage here, so the main point is confirming that your MDX actually uses the 20-inch fitment before moving on to product selection. It suits MDX applications that were equipped for this wider 20-inch setup rather than the alternative MDX sizes.
Year(s): 2020|Fit(s): MDX|Construction: Radial|Rim: 18-in rim
The 245/60R18 is a radial metric size with a 245 millimeter section width, a 60-series aspect ratio, and an 18-inch rim diameter. This size is specific to certain MDX configurations and stands apart from the MDX’s 20-inch options because it mounts on a different wheel diameter. It is the correct path for an MDX running 18-inch wheels, so wheel diameter should be confirmed first.
Year(s): 2020|Fit(s): MDX|Construction: Radial|Rim: 20-in rim
The 245/50R20 is a radial metric size with a 245 millimeter section width, a 50-series aspect ratio, and a 20-inch rim diameter. This is another MDX-specific fitment, and it shares a 20-inch wheel diameter with the MDX’s 265/45R20 option while differing in width and profile. It is the right choice for MDX owners who have confirmed this exact 20-inch factory-style size on the vehicle.
Year(s): 2020|Fit(s): RDX|Construction: Radial|Rim: 20 in
The 255/45R20 is a radial metric size with a 255 millimeter section width, a 45-series aspect ratio, and a 20-inch rim diameter. BFGoodrich, Nitto, and Pro-Trac offer this size, with Blackwall and RWL sidewall styles available; speed ratings vary by product, with W-rated options carrying a 168 mph ceiling, and rim-width coverage appears at 8.0 to 9.5 inches on the BFGoodrich offerings. This RDX-specific size is a practical choice for drivers who want to stay with the model’s 20-inch fitment while choosing among different brand and sidewall-character options.
Year(s): 2020|Fit(s): RDX|Construction: Radial|Rim: 19-in rim
The 235/55R19 is a radial metric size with a 235 millimeter section width, a 55-series aspect ratio, and a 19-inch rim diameter. This size is specific to certain RDX configurations and uses a different wheel diameter than the RDX’s 255/45R20 fitment. It is the correct starting point for an RDX on 19-inch wheels, especially when confirming model and wheel package before narrowing product choices.
Two Acura truck models are covered for 2020: the MDX and the RDX. They do not share the same tire sizes, so identifying the correct model is essential before choosing a tire. Select your model below to narrow the fitment history and product options to the right vehicle.
2020 Acura Trucks MDX
The 2020 Acura Trucks MDX is Acura’s midsize luxury crossover, known for three-row versatility and a more comfort-oriented role within the lineup. Its tires mount on either 18-inch or 20-inch wheels depending on configuration, so the wheel diameter on the vehicle matters just as much as the model name when choosing a size.
The 2020 Acura Trucks RDX is Acura’s compact luxury crossover, with a more athletic character and a slightly smaller footprint than the MDX. Its tire fitments mount on either 19-inch or 20-inch wheels, so verifying the original wheel package is the first step before comparing tire options.
Four products are available across five tire sizes for 2020 Acura Trucks vehicles. The 255/45R20 fitment includes four radial choices from BFGoodrich, Nitto, and Pro-Trac with Blackwall and RWL sidewall styles, so confirm your exact size first and then check the specific product’s speed rating and wheel-width compatibility.
These FAQs cover how 2020 Acura Trucks tire sizes differ between MDX and RDX models, what the metric size codes mean, what product and sidewall choices exist in 255/45R20, and what to check for regular use, storage, and longer drives.
Size Basics & Fitment
What tire sizes fit 2020 Acura Trucks vehicles?
2020 Acura Trucks vehicles use five sizes across two models. The MDX uses 265/45R20, 245/60R18, and 245/50R20, while the RDX uses 255/45R20 and 235/55R19. Those sizes do not overlap between the two models, and the wheel diameters span 18, 19, and 20 inches depending on the application.
That means year and make alone are not enough to choose a tire for 2020 Acura Trucks. You need to confirm whether you have an MDX or RDX and then verify the wheel diameter already on the vehicle. If the vehicle has been changed from its original wheel package, check the tire sidewall and the wheel itself before moving forward.
What does 255/45R20 mean on a 2020 Acura Trucks tire?
On a 2020 Acura Trucks tire, 255/45R20 is a metric radial size. The 255 is the section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 20 is the wheel diameter in inches. For 2020 Acura Trucks, that size belongs to the RDX rather than the MDX.
Knowing how to read that code helps you avoid choosing a tire that matches only part of the specification. A 20-inch wheel is only one part of the fitment, because width and aspect ratio also affect overall dimensions. If your RDX currently wears 255/45R20, stay with that exact size unless you are intentionally changing wheels and recalculating fitment.
Do all 2020 Acura Trucks models use the same tire size?
No, 2020 Acura Trucks models do not use the same tire size. The MDX has three fitments and the RDX has two, with no shared size across both nameplates. All of them are radial tires, but the actual dimensions and wheel diameters differ by model and configuration.
That matters because many buyers know the vehicle is a 2020 Acura but have not yet confirmed whether it is an MDX or RDX fitment issue, or whether the wheel package changed within the same model line. Start by identifying the model, then compare the current sidewall marking to the expected fitment. That is the simplest way to prevent a mismatch.
Buying the Right Tire
What sidewall styles are available for 2020 Acura Trucks tires?
Sidewall style variety appears in the 255/45R20 fitment used on the 2020 Acura Trucks RDX. That size is available in both Blackwall and raised white letter form, with BFGoodrich and Nitto options in Blackwall and a Pro-Trac Street Pro III option in RWL. The other 2020 Acura Trucks sizes here do not add another sidewall style to the range.
For a modern Acura crossover, Blackwall is usually the more factory-like visual choice, while RWL gives the tire a more overt performance look. The sidewall style does not change the basic size, so the decision is mainly about appearance once the correct fitment is confirmed. If keeping the vehicle close to original presentation matters, compare the sidewall look against the vehicle’s intended character.
What brands make tires for 2020 Acura Trucks vehicles?
2020 Acura Trucks tire coverage here includes BFGoodrich, Nitto, and Pro-Trac, all within the 255/45R20 size used on the RDX. BFGoodrich appears in both g-Force Comp 2 AS and g-Force Sport Comp 2 form, Nitto appears with the NT555 G2, and Pro-Trac appears with the Street Pro III. Each of those is a radial tire in the same basic fitment.
Brand choice becomes relevant after the correct size is settled, because the available brands are not spread evenly across every 2020 Acura Trucks fitment. If you are shopping an RDX on 255/45R20, you can compare brand character, sidewall appearance, and speed rating within that size. If you own an MDX or an RDX on 235/55R19, confirm the exact size first before narrowing brands.
What is the difference between BFGoodrich and Pro-Trac options for the 2020 Acura Trucks RDX in 255/45R20?
In 255/45R20 for the 2020 Acura Trucks RDX, BFGoodrich offers Blackwall g-Force options with a stated 8.0 to 9.5 inch rim-width range and 101W service description, while Pro-Trac offers the Street Pro III in raised white letter form. The BFGoodrich tires shown in this size weigh 32 pounds, and the Pro-Trac entry is 31.97 pounds. All are radial 20-inch fitments.
The practical difference is less about basic fitment and more about presentation and product character within the same size. If wheel-width compatibility is a key check, the BFGoodrich specifications give you a clear 8.0 to 9.5 inch target. If the visual goal leans toward a more assertive sidewall treatment, the Pro-Trac RWL option stands out immediately on the vehicle.
Fitting & Setup
What rim width do 2020 Acura Trucks tires require?
Rim-width guidance appears in the 255/45R20 size used on the 2020 Acura Trucks RDX. The BFGoodrich options in that size call for an 8.0 to 9.5 inch rim-width range on a 20-inch wheel. The other 2020 Acura Trucks sizes here do not add wheel-width figures, so the safest approach is to confirm the actual wheel specification before changing tire brands or series.
Rim width matters because the same tire size can behave differently when stretched or pinched outside the intended range. If your RDX uses 255/45R20, compare the wheel width stamped on the wheel or confirmed by the wheel maker against that 8.0 to 9.5 inch window. That check is especially worthwhile on vehicles with aftermarket wheels.
Do 2020 Acura Trucks tires require inner tubes?
The 2020 Acura Trucks tires covered here are all radial metric sizes, and no tube-type marking appears in the available product coverage for 255/45R20. That points to tubeless radial use for the products represented in that size. The remaining 2020 Acura Trucks fitments should still be matched to the exact tire and wheel combination being used.
Inner-tube decisions should always follow the tire’s sidewall marking and the wheel design actually on the vehicle. Modern Acura crossover wheels are ordinarily used with tubeless radials, but that should be confirmed directly on the tire and wheel rather than assumed from model year alone. If a wheel has been replaced or refinished, inspect the bead seat and valve setup before installation.
Maintenance, Storage & Longevity
How should I store a 2020 Acura Trucks when the tires are fitted?
A 2020 Acura Trucks vehicle should be stored in a cool, dry place away from direct sunlight, electric motors, battery chargers, furnaces, and other ozone sources that can age rubber. Keep the tires clean, maintain normal inflation, and move the vehicle periodically so one contact patch does not stay loaded in the same place for months at a time. Those practices help preserve radial sidewalls and tread shape.
If the vehicle will sit for an extended season, many owners either roll it occasionally or support it in a way that reduces long-term load without leaving the suspension hanging unnaturally. Storage habits matter even on newer collector-oriented vehicles because age, heat, and environment can shorten tire life long before tread wears out. A tire cover and a clean indoor floor also help.
How long do tires on a 2020 Acura Trucks typically last?
Tires on a 2020 Acura Trucks vehicle should be judged by age and condition as much as by tread depth. A good rule is to evaluate them carefully once they are in the five- to seven-year range and to treat about ten years as a point where replacement deserves serious consideration even if the tires still look usable. The DOT date code on the sidewall is the reference for tire age.
That age-based approach is especially important for vehicles that are driven lightly, because collector-style use can leave a tire looking decent while the rubber hardens internally. If a 2020 Acura Trucks vehicle still carries older original or early replacement tires, inspect them more critically than mileage alone would suggest. Cracks, hardening, and vibration can all appear before the tread is worn out.
How often should tires on a 2020 Acura Trucks be inspected?
Tires on a 2020 Acura Trucks vehicle should be inspected before every drive and more thoroughly before any longer trip. Look for pressure loss, uneven wear, cuts, bulges, punctures, shoulder damage, and sidewall cracking. On a radial crossover tire, even a small issue can become more serious quickly at modern road speeds.
A quick visual check takes very little time and can catch the kind of age-related or impact-related damage that is easy to miss on a vehicle that is not driven daily. Before an extended outing, also inspect the spare, valve stems, and tread depth across the full width of the tire. That routine is often more useful than waiting for a scheduled service interval.
Safety & Road Use
Are 2020 Acura Trucks tires safe for highway driving?
2020 Acura Trucks tires in the available 255/45R20 fitment include W-rated products, which carry a 168 mph speed ceiling. That is far beyond normal U.S. highway use and indicates that the tire itself is not the limiting factor in ordinary interstate driving when it is in good condition, correctly inflated, and properly matched to the wheel. The remaining fitments still need to be matched by exact size and condition before use.
Highway safety depends on more than the speed symbol alone. Tire age, inflation pressure, alignment, suspension condition, and any prior impact damage all matter in real-world use. For a 2020 Acura Trucks vehicle, a fresh and correctly sized tire is only part of the equation, so a pre-trip inspection and a check of the vehicle’s general mechanical condition should come before any longer highway run.
What inflation pressure should I use for 2020 Acura Trucks tires?
Inflation pressure for 2020 Acura Trucks tires should follow the vehicle placard or owner’s manual first, because factory pressure recommendations are tied to the specific model, axle loading, and wheel-and-tire package. In the available 255/45R20 coverage, one BFGoodrich option carries a maximum load of 1819 pounds at 51 psi, but that is a tire rating reference rather than a universal running pressure for every 2020 Acura Trucks application.
Use the vehicle’s specified cold pressure for everyday driving, then confirm that the chosen tire’s load capacity is appropriate for the vehicle. Do not transfer a pressure figure from one 2020 Acura Trucks size to another just because the models are from the same year. If a new tire series is being installed, compare the placard, the tire maker’s guidance, and the actual size on the vehicle before setting pressure.
What should I check before taking a 2020 Acura Trucks on a longer drive?
Before taking a 2020 Acura Trucks vehicle on a longer drive, inspect each tire for cracking, punctures, sidewall bulges, irregular wear, and proper cold inflation. Check that the tires match the correct size for the model and wheel package, and make sure the spare is usable as well. On a modern crossover, an unnoticed pressure issue or impact bruise can become a much bigger problem at sustained highway speeds.
That tire check should be part of a broader pre-drive review that includes brakes, fluids, battery condition, and suspension health. If the vehicle has sat for extended periods, pay extra attention to flat spotting, age hardening, and any vibration on the first few miles. Catching those issues early is the best way to make a longer drive in a 2020 Acura Trucks vehicle feel uneventful for the right reasons.
