The 2020 Acura RLX represents Acura’s full-size luxury sedan in its final model-year stretch, blending understated executive character with modern chassis technology and a more performance-minded edge in Sport Hybrid SH-AWD form. For tire selection, the key point is refreshingly straightforward: both the 2020 Acura RLX Base and Sport Hybrid SH-AWD use a 245/40R19 radial tire on a 19-inch rim. That keeps the fitment decision focused less on size changes and more on choosing the right blackwall radial within the correct specification. For owners balancing daily road use, replacement quality, and a clean original-style presentation, wheel width and overall vehicle setup still deserve a careful check.
Which Tire Size Is Right for The 2020 Acura RLX
The 2020 Acura RLX uses one primary tire size: 245/40R19, and it is a radial fitment on a 19-inch rim. That same size carries across both covered sub-models, so the main decision is not which size fits, but which 245/40R19 tire best matches your driving use, wheel width, and replacement priorities.
A 245/40R19 size uses a 245-millimeter nominal section width, a 40-series aspect ratio, radial construction, and a 19-inch rim diameter. On the 2020 Acura RLX, this is the primary modern radial fitment, so the selection process centers on choosing the right version of the same size rather than sorting through multiple factory-type sizes. Available choices in this size come from BFGoodrich in blackwall form across the g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A series. That makes 245/40R19 the right place to compare intended use, rim-width compatibility, and overall replacement character.
Tire fitment stays consistent across the covered 2020 Acura RLX sub-models, with the same primary size used throughout. That makes sub-model confirmation simple, while still leaving room to compare tire type and wheel compatibility before making a final choice.
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2020 Acura RLX Base
The 2020 Acura RLX Base uses the same 245/40R19 radial tire as the rest of the covered lineup. Selection comes down to choosing the right blackwall radial in that size and confirming that the actual wheel setup still matches the intended rim-width range.
The 2020 Acura RLX Sport Hybrid SH-AWD also uses a 245/40R19 radial tire on a 19-inch rim. That keeps the fitment straightforward, so attention can shift to picking the tire series that best suits current road use and verifying wheel specifications on any modified car.
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 2020 Acura RLX Tires for Sale
Available 245/40R19 options for the 2020 Acura RLX come from BFGoodrich and focus on blackwall radial performance-oriented choices. The product grid is most useful for comparing g-Force series differences, load specifications where stated, and rim-width compatibility within the same core size.
Owners shopping tires for a 2020 Acura RLX usually want quick answers on the correct 245/40R19 size, 19-inch rim fitment, product differences within that size, and what to inspect before putting a luxury performance sedan back on the road.
Tire Size & Fitment
What tire size fits a 2020 Acura RLX?
The 2020 Acura RLX uses a 245/40R19 radial tire. That size applies to both the RLX Base and the RLX Sport Hybrid SH-AWD, so the core fitment stays the same across the covered sub-models.
That consistency makes the size decision simple, but the replacement still needs to match the car’s actual wheel setup. A car with aftermarket wheels, suspension changes, or a previous non-stock tire package should be checked for wheel width, clearance, and overall size before a new 245/40R19 is selected.
What size rim does a 2020 Acura RLX use?
The 2020 Acura RLX uses a 19-inch rim with its 245/40R19 tire size. The tire size itself confirms the 19-inch wheel diameter, and the available products in this fitment are built around that rim diameter.
Rim diameter is only part of the picture, so wheel width still matters when choosing among replacement tires. Several available 245/40R19 options are intended for wheels in the 8.0- to 9.5-inch range, which makes it worth confirming the actual wheel dimensions before mounting a new set.
Do all 2020 Acura RLX sub-models use the same tire size?
Yes. Both the 2020 Acura RLX Base and the 2020 Acura RLX Sport Hybrid SH-AWD use the same 245/40R19 radial tire size. There is no split in primary size between those covered sub-models.
That means tire shopping is mostly about choosing the right version of 245/40R19 rather than sorting out different fitments by trim. Even so, it is smart to look at the car itself before purchase, especially if it has different wheels, altered ride height, or an existing tire package that does not match stock sizing.
Choosing the Right Tire
What should I consider when choosing a 245/40R19 tire for a 2020 Acura RLX?
Start with the correct size, which is 245/40R19, and confirm that the tire is built for a 19-inch wheel. From there, compare construction, intended use, rim-width compatibility, and load specifications where those figures are stated.
A 2020 Acura RLX can place very different demands on a tire depending on whether it is used as a daily luxury sedan, a highway commuter, or a lower-mileage enthusiast car. Looking closely at wheel width, sidewall style, and the character of each tire series helps narrow the field without drifting away from the proper fitment.
What sidewall styles are available for 2020 Acura RLX tires?
The available 245/40R19 choices for the 2020 Acura RLX use a blackwall sidewall style. That keeps the appearance clean and contemporary, which suits the RLX’s late-model luxury sport sedan presentation.
Since the sidewall treatment does not vary here, the more meaningful comparisons move to tire series, load details, and wheel-width suitability. Buyers looking for a specific driving feel or replacement character will usually get more value from comparing those factors than from appearance, since the visible sidewall style stays consistent.
What tire series are available for the 2020 Acura RLX?
The 2020 Acura RLX is offered in 245/40R19 through several BFGoodrich g-Force series, including g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A. Each stays within the same basic size while offering a different product family.
That kind of lineup gives the buyer room to compare the role of each series without changing the vehicle’s core fitment. The best approach is to weigh your intended use, review the stated load and rim-width details where available, and make sure the car’s current wheel package still matches the tire you are considering.
Restoration & Appearance
Which tire should I choose for a period-style 2020 Acura RLX?
A period-style approach on a 2020 Acura RLX usually means staying with the original-type modern radial sizing, which is 245/40R19, and choosing a clean blackwall tire that preserves the car’s understated late-model luxury appearance. The available BFGoodrich options keep that overall visual direction intact.
Because this is a modern sedan rather than an older restoration-era car, appearance usually comes down to keeping the correct size and avoiding mismatched wheel-and-tire proportions. A car with non-stock wheels or altered suspension can change that look quickly, so checking the current setup matters just as much as the tire brand or series.
Does correct tire fitment matter for a 2020 Acura RLX restoration or preservation-minded build?
Yes. Keeping a 2020 Acura RLX in its correct 245/40R19 size helps preserve the car’s intended stance, wheel-to-tire proportion, and overall visual balance. Even on a newer collector candidate, fitment has a strong effect on how authentic and well-sorted the finished car appears.
Preservation-minded owners usually benefit from resisting the urge to improvise on size unless there is a clear reason and enough room to verify the change. Staying close to the proper specification also makes it easier to avoid rubbing, awkward sidewall shape, and visual cues that make an otherwise clean RLX look out of proportion.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Acura RLX?
Yes. A 2020 Acura RLX may start with a 245/40R19 fitment, but aftermarket wheels, altered offsets, suspension changes, or ride-height adjustments can change what actually works on the car. Even when the tire size remains the same, the surrounding setup can affect clearance and compatibility.
That is why the wheel itself should be measured and the tire-to-body relationship inspected before replacement. Checking inner clearance, fender clearance, and steering travel helps prevent surprises, especially on a car that no longer sits or rolls on its original-style wheel package.
What should I inspect before driving a 2020 Acura RLX on new tires?
Before putting a 2020 Acura RLX back into regular road use on new tires, inspect the wheels for damage, confirm correct mounting size, and make sure inflation is set appropriately for the tire and vehicle application. It is also wise to look over the brakes, suspension, and alignment condition.
A fresh tire can only do its job if the rest of the chassis is in sound condition. Uneven wear patterns, vibration, pulling, or rubbing after installation should be addressed early, since those signs often point to alignment problems, wheel issues, or clearance conflicts rather than a problem with the tire size itself.
How often should tires on a 2020 Acura RLX be inspected?
Tires on a 2020 Acura RLX should be inspected regularly for tread wear, cuts, bulges, punctures, and visible sidewall damage. Air pressure should also be checked consistently, since low or uneven pressure can change wear behavior and overall road manners.
Inspection becomes even more important when the car is driven infrequently or stored for extended periods. A sedan that sits can still develop age-related issues, flat spotting, or slow air loss, so looking over the tires before a longer drive is a smart habit even when the tread appears to have plenty of life left.
