The 2019 Acura ILX sits in the compact sport sedan category with Acura’s familiar blend of sharp styling, everyday drivability, and responsive road manners. For buyers replacing tires on one today, the key decision is tied less to vintage-style construction and more to the car’s exact trim and wheel package. A 2019 Acura ILX uses radial tires in either 215/45R17 or 225/40R18, with fitment changing between the Base model and the w/A-Spec Pkg. trim. Available choices center on blackwall performance-oriented tire lines from BFGoodrich and Nitto. The right pick starts with confirming the sub-model and wheel diameter before comparing series, rim-width compatibility, and intended road use.
Which Tire Size Is Right for The 2019 Acura ILX
The 2019 Acura ILX uses two primary tire sizes, and the correct one depends on the sub-model and wheel diameter. The Base model uses a 17-inch radial setup, while the w/A-Spec Pkg. uses an 18-inch radial setup, so the first step is confirming which trim the car has and whether the wheels are still the original diameter.
The 215/45R17 size uses a metric sizing system: 215 is the nominal section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 17 is the rim diameter in inches. On the 2019 Acura ILX, this is the radial fitment for the Base model and suits the car’s modern compact sport sedan setup. Available choices in this size come from BFGoodrich in blackwall designs across the g-Force Sport Comp 2, g-Force Comp 2 AS, and g-Force Phenom T/A series. It is the right starting point when the car retains its 17-inch wheel package and you want to compare tire character within the correct size.
The 225/40R18 size follows the same metric radial format, with 225 indicating nominal section width in millimeters, 40 identifying the profile, R marking radial construction, and 18 showing rim diameter in inches. On the 2019 Acura ILX, this size belongs to the w/A-Spec Pkg. sub-model and is tied to the 18-inch wheel setup. Product choices include blackwall options from BFGoodrich and Nitto, with several performance-oriented series available in the size. This fitment should be evaluated when the car has the A-Spec wheel package or currently wears 18-inch wheels that match the vehicle’s clearance and wheel specifications.
Tire fitment on the 2019 Acura ILX changes by sub-model rather than staying the same across the range. Checking the exact trim matters because the Base and w/A-Spec Pkg. versions use different tire sizes and different wheel diameters.
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2019 Acura ILX Base
The 2019 Acura ILX Base uses a 215/45R17 radial tire on a 17-inch wheel setup. That keeps tire selection focused on choosing the right blackwall performance-oriented series within the correct size rather than deciding between multiple primary fitments.
The 2019 Acura ILX w/A-Spec Pkg. uses a 225/40R18 radial tire on an 18-inch wheel setup. Tire selection here starts with confirming that larger wheel package, then comparing the available blackwall tire lines and their rim-width compatibility.
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 2019 Acura ILX Tires for Sale
Available 2019 Acura ILX tire choices center on radial blackwall performance lines in 215/45R17 and 225/40R18. BFGoodrich covers both sizes with several g-Force series, while the 18-inch fitment also includes Nitto, giving buyers useful differences in series selection and rim-width compatibility.
These FAQs focus on the exact tire sizes used on the 2019 Acura ILX, how fitment changes between sub-models, and what to compare when choosing tires for 17-inch or 18-inch wheel setups.
Tire Size & Fitment
What tire size fits a 2019 Acura ILX?
A 2019 Acura ILX uses one of two radial tire sizes depending on sub-model. The Base model uses 215/45R17, while the 2019 Acura ILX w/A-Spec Pkg. uses 225/40R18. Both are modern metric radial sizes, but they are tied to different wheel diameters and should not be treated as interchangeable primary fitments.
The practical step is to confirm the exact trim and check the wheel diameter already on the car before ordering tires. A Base model on 17-inch wheels needs a different tire than an A-Spec package car on 18-inch wheels, and any previous wheel change should be verified before selecting by size alone.
What size rim does a 2019 Acura ILX use?
The 2019 Acura ILX uses either a 17-inch or 18-inch rim, depending on sub-model. The Base model is paired with a 17-inch wheel and a 215/45R17 tire, while the w/A-Spec Pkg. version uses an 18-inch wheel with a 225/40R18 tire.
Rim diameter should be confirmed first because tire size selection follows the wheel. It also helps to verify the actual wheel width if the car has aftermarket rims, since the available tires in these sizes carry recommended rim-width ranges that can affect how well a particular tire matches the wheel already on the vehicle.
Do all 2019 Acura ILX sub-models use the same tire size?
No. The 2019 Acura ILX does not use one tire size across all sub-models. The Base model uses 215/45R17, while the w/A-Spec Pkg. version uses 225/40R18, so fitment changes with the trim and wheel package rather than staying uniform across the lineup.
That difference matters because the two sizes use different rim diameters and slightly different tire proportions. Anyone replacing tires should confirm the actual sub-model and inspect the wheels currently on the car, especially if it was purchased used, because a previous owner may have changed the wheel and tire package from the original trim-based setup.
Choosing the Right Tire
What should I consider when choosing a tire for a 2019 Acura ILX?
Start with the correct size for the specific 2019 Acura ILX sub-model: 215/45R17 for the Base model or 225/40R18 for the w/A-Spec Pkg. After size, the main considerations are radial tire series, rim-width compatibility, load specification where shown, and whether the car is used mainly for daily driving, spirited street use, or a mix of both.
It also helps to compare the wheel setup already on the car before narrowing down product choices. A tire can be correct in size but still deserve a closer look if the wheels are aftermarket, wider than stock-style dimensions, or paired with suspension changes that alter clearance at the fender, strut, or steering range.
What sidewall styles are available for 2019 Acura ILX tires?
The available tires for the 2019 Acura ILX use a blackwall sidewall style in both 215/45R17 and 225/40R18. That keeps the appearance straightforward and modern, which suits the ILX’s compact sport sedan character without introducing whitewall, redline, or other period-style sidewall treatments.
Since sidewall appearance is consistent here, the real comparison shifts to tire series, brand availability, and fit with the car’s wheel package. Buyers who want a clean OEM-style presentation can stay focused on selecting the proper size and the right performance-oriented tread line rather than sorting through multiple cosmetic sidewall options.
What brands offer tires for the 2019 Acura ILX?
BFGoodrich and Nitto both offer tires for the 2019 Acura ILX, though the brand mix depends on size. BFGoodrich appears in both 215/45R17 and 225/40R18 through several g-Force series, while Nitto is available in the 225/40R18 size with the NT555 G2.
Brand choice should still come after confirming the correct size and wheel diameter for the sub-model. Once that is settled, compare the available series within that size, along with rim-width range and any load information shown, to make sure the tire suits the car’s existing wheels and the way the vehicle is actually driven.
Restoration & Appearance
Does correct tire fitment matter for a 2019 Acura ILX restoration?
Yes. Even on a newer vehicle such as the 2019 Acura ILX, correct tire fitment matters if the goal is to return the car to a proper trim-specific appearance and wheel setup. The Base model and the w/A-Spec Pkg. version use different tire sizes and different wheel diameters, so appearance starts with matching the correct size to the correct configuration.
A restoration-minded owner should confirm whether the car still carries its intended 17-inch or 18-inch wheels before selecting tires. That avoids a finished look that feels mismatched, and it keeps the focus on a clean, appropriate presentation rather than trying to make one tire size cover every version of the ILX.
How does tire choice affect the appearance of a 2019 Acura ILX?
On a 2019 Acura ILX, appearance is shaped more by correct size, wheel diameter, and tire profile than by decorative sidewall treatment. The available tires are blackwall radials, so the visual difference comes from whether the car carries the 215/45R17 Base setup or the 225/40R18 w/A-Spec Pkg. setup.
Choosing the proper fitment helps preserve the sedan’s intended stance and overall look. A car wearing the wrong wheel diameter or profile can look off even when the tires are high quality, so trim confirmation and wheel inspection should come first before comparing series names or narrower product-level details.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Acura ILX?
Yes. Modifications can affect tire fitment on a 2019 Acura ILX even when the tire size looks close to the original specification. Aftermarket wheels, altered wheel width, offset changes, lowering springs, and suspension changes can all influence how a 215/45R17 or 225/40R18 tire sits in the wheel opening and clears nearby components.
A modified ILX should be checked for actual wheel diameter, wheel width, and clearance at full steering lock and normal suspension travel before replacement tires are chosen. That matters most when the car no longer uses its original trim-based setup, since a size that suits one wheel package may create rubbing or appearance issues on another.
What should I inspect before driving a 2019 Acura ILX on new tires?
Before driving a 2019 Acura ILX on new tires, inspect the wheels for the correct diameter, confirm the tires match the car’s trim-specific size, and make sure inflation is set appropriately for the installed tires and vehicle use. It is also wise to check for any suspension wear, alignment issues, or existing fender and liner contact.
A short visual and road check after installation can prevent small fitment problems from becoming larger ones. Look for even clearance, listen for rubbing during turns, and keep an eye on early wear patterns, especially if the car has aftermarket wheels or has recently had work done that could affect alignment or ride height.
How often should tires on a 2019 Acura ILX be inspected?
Tires on a 2019 Acura ILX should be inspected regularly rather than only at replacement time. Routine checks should include tread condition, visible cuts, bulges, sidewall damage, and air loss, along with a quick look for uneven wear that might suggest alignment or suspension issues on either the 17-inch or 18-inch setup.
Frequent inspection matters because a compact sport sedan can hide early tire issues until handling or ride quality changes. Pressure checks, rotation habits where appropriate, and occasional wheel-condition inspection help preserve tire life and keep the car driving as intended, particularly if it sees mixed commuting and more enthusiastic weekend use.
