The 2018 Chevrolet Impala represents the full-size sedan in its late-model form, blending roomy comfort with the cleaner, more contemporary proportions that defined the car’s final generation. For owners, tire selection is less about vintage construction choices and more about matching the car’s exact trim and wheel package. This Impala uses modern radial fitments in either 235/50R18 or 245/45R19, depending on sub-model. Available choices include blackwall performance-oriented tires as well as select redline and raised white letter options in the 18-inch size. The important first step is confirming whether the car carries the 18-inch or 19-inch setup before comparing brands, sidewall style, and intended road use.
Which Tire Size Is Right for The 2018 Chevrolet Impala
The 2018 Chevrolet Impala uses two primary tire sizes, and the correct one depends on the exact sub-model and wheel package. Both are modern radial sizes, but they do not share the same rim diameter, so confirming whether the car has 18-inch or 19-inch wheels is the first step. Once that is settled, the real choice becomes comparing available brands, sidewall presentation, and product specifications within the correct size.
The 235/50R18 size identifies a radial tire that is 235 millimeters wide, uses a 50-series aspect ratio, and mounts on an 18-inch rim. On the 2018 Chevrolet Impala, this size serves modern sedan fitment needs with a balance of responsive handling and everyday road use. Available choices include BFGoodrich, Nitto, and Pro-Trac products, with blackwall, redline, and raised white letter sidewall treatments depending on the tire. This is the size to evaluate for LS models and certain LT configurations, with wheel diameter confirmation remaining especially important on LT cars.
The 245/45R19 size uses a 245-millimeter section width, a 45-series profile, and a 19-inch rim, all in radial construction. For the 2018 Chevrolet Impala, it represents the larger-diameter wheel setup used on specific trims rather than a general substitute for the 18-inch package. Product choices in this size center on BFGoodrich and Nitto blackwall performance-oriented lines, with differences in tire series and rim-width specifications. This is the size to verify for Premier models and certain LT cars, especially if the vehicle has changed hands or received wheel swaps.
Sub-model fitment matters on the 2018 Chevrolet Impala because tire size changes with trim and wheel package. The LS stays with one size, the Premier uses another, and the LT can appear with either setup, so identifying the exact configuration is the key first step.
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2018 Chevrolet Impala LS
The 2018 Chevrolet Impala LS uses the 235/50R18 radial fitment on an 18-inch wheel. Tire selection for the LS is mainly a matter of choosing among available brands, series, and sidewall styles while staying with the correct 18-inch size.
The 2018 Chevrolet Impala LT can use either the 235/50R18 or 245/45R19 radial setup, depending on the wheel package on the car. That makes wheel confirmation especially important before comparing products, since the LT does not point to one single tire size by trim name alone.
The 2018 Chevrolet Impala Premier uses the 245/45R19 radial fitment with a 19-inch wheel. Tire choice here is focused on selecting the right blackwall tire series and confirming wheel compatibility rather than sorting through multiple primary size options.
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 2018 Chevrolet Impala Tires for Sale
Available 2018 Chevrolet Impala tire choices center on 235/50R18 and 245/45R19 radial fitments from BFGoodrich, Nitto, and Pro-Trac. Buyers can compare tire series, blackwall styling in both sizes, and redline or raised white letter options within the 18-inch fitment.
These FAQs focus on the exact tire sizes used on the 2018 Chevrolet Impala, how fitment changes by sub-model, and what to compare when choosing among radial tires, wheel sizes, sidewall styles, and road-use considerations.
Tire Size & Fitment
What tire size fits a 2018 Chevrolet Impala?
The 2018 Chevrolet Impala uses two primary tire sizes: 235/50R18 and 245/45R19. Both are radial fitments, but they apply to different sub-model and wheel configurations. The LS uses 235/50R18, the Premier uses 245/45R19, and the LT can use either size depending on how the car is equipped.
That means the correct answer starts with the exact trim and the wheel diameter currently on the car. An LT owner should not assume one size over the other without checking the wheels, and any Impala with aftermarket wheels should be measured carefully before selecting a replacement tire.
What size rim does a 2018 Chevrolet Impala use?
A 2018 Chevrolet Impala uses either an 18-inch or 19-inch rim, depending on the tire size and trim. The 235/50R18 fitment uses an 18-inch rim, while the 245/45R19 fitment uses a 19-inch rim. Both are modern radial applications rather than vintage bias-ply sizing formats.
Rim diameter is the first fitment detail to confirm because a 19-inch tire cannot mount on an 18-inch wheel, and the reverse is equally true. On LT models especially, checking the actual wheel on the car matters more than relying on trim name alone if the vehicle has had prior owner changes.
Why does the 2018 Chevrolet Impala have more than one tire size?
The 2018 Chevrolet Impala has more than one tire size because different trims and wheel packages use different wheel diameters. The LS uses 235/50R18, the Premier uses 245/45R19, and the LT appears with either fitment. Both sizes are correct in the right configuration, but they are not interchangeable as primary fitments.
This matters because the tire choice follows the wheel setup already on the car. Before comparing brands or tread styles, identify the exact trim and verify the installed wheel diameter so the replacement tire matches the car’s present configuration and preserves proper mounting and clearance relationships.
Choosing the Right Tire
What should I consider when choosing a 2018 Chevrolet Impala tire?
Start with the correct size for the car: 235/50R18 or 245/45R19. From there, compare radial tire series, wheel compatibility, and the kind of driving the Impala sees most often. Available products include performance-oriented blackwall tires from BFGoodrich and Nitto, plus select Pro-Trac options in the 18-inch size.
Appearance can also influence the choice, especially in 235/50R18 where redline and raised white letter versions are available alongside blackwalls. It also helps to compare rim-width specifications, load figures when stated, and whether the car remains stock or has wheel changes that could affect tire selection.
What sidewall styles are available for 2018 Chevrolet Impala tires?
Sidewall style depends on the size. In 235/50R18, available choices include blackwall, redline, and RWL, which is raised white letter. In 245/45R19, the available options center on blackwall tires. That gives the 18-inch fitment a wider appearance range than the 19-inch setup.
For many owners, sidewall style is an appearance decision after the correct size has already been confirmed. A blackwall keeps a clean contemporary look, while redline or raised white letter options can give an 18-inch Impala a more distinctive visual character without changing the basic size category.
What brands offer tires for the 2018 Chevrolet Impala?
Tires for the 2018 Chevrolet Impala are available from BFGoodrich, Nitto, and Pro-Trac within the applicable sizes on this page. BFGoodrich appears in both 18-inch and 19-inch fitments, Nitto is also offered in both, and Pro-Trac appears in the 235/50R18 size with alternate sidewall treatments.
The useful comparison is not simply the brand name but how each option is configured in the correct size. Tire series, sidewall presentation, rim-width specification, and any stated load capacity can all shape the decision once the Impala’s actual wheel diameter and trim-specific fitment have been confirmed.
Restoration & Appearance
Which tire should I choose for a period-style 2018 Chevrolet Impala?
A period-style approach on a 2018 Chevrolet Impala still begins with the correct modern radial size for the trim and wheel package. For cars using 235/50R18, the available range offers the broadest visual flexibility because that size includes blackwall, redline, and raised white letter presentations in addition to performance-oriented radial choices.
The 245/45R19 fitment leans more toward contemporary blackwall presentation, so appearance choice is narrower there. Owners trying to preserve a specific showroom-era look should match the actual wheel setup first, then compare sidewall style and tire series while using marque references or original sales material for visual guidance.
How does tire construction affect the appearance of a restored 2018 Chevrolet Impala?
On a 2018 Chevrolet Impala, tire construction does not create a bias-ply-versus-radial appearance decision because the primary fitments are radial. The visual difference comes more from sidewall treatment and tire series than from construction type. Blackwall, redline, and raised white letter options can change the car’s presentation noticeably in the 18-inch size.
That makes wheel size and sidewall style the main appearance variables to study. A clean blackwall keeps the car closer to a mainstream late-model sedan look, while redline or raised white letter sidewalls can push the presentation in a more personalized direction without changing the Impala’s correct basic tire construction.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Chevrolet Impala?
Yes. Modifications can affect tire fitment on a 2018 Chevrolet Impala even when the tire size appears close to the original setup. Aftermarket wheels, changes in wheel width, offset differences, lowering, or suspension alterations can all influence clearance at the fender, strut, or steering components.
That is especially important on LT cars, where either 18-inch or 19-inch fitment may already be correct depending on configuration. A modified Impala should be checked at full steering lock and through normal suspension travel before settling on a replacement, rather than assuming the stock trim-based size answer still applies.
What should I inspect before driving a 2018 Chevrolet Impala on new tires?
Before driving a 2018 Chevrolet Impala on new tires, inspect wheel condition, verify the correct tire size, and confirm that inflation pressure is set appropriately for the tire and vehicle application. It also helps to check for uneven wear clues, damaged valve stems, and any alignment issues that may have affected the previous tires.
A short road check should follow installation so any vibration, pulling, or clearance concern is caught early. Owners should also recheck lug torque as appropriate, watch for air loss during the first days of use, and make sure the car’s actual wheel diameter matches the installed 18-inch or 19-inch tire.
How often should tires on a 2018 Chevrolet Impala be inspected?
Tires on a 2018 Chevrolet Impala should be inspected regularly, not only when replacement time arrives. Routine checks should include tread wear, cuts, sidewall damage, visible bulges, and pressure loss. On a car driven daily, frequent visual inspection helps catch alignment or suspension issues before they shorten tire life.
A practical habit is to inspect the tires during washing, fueling, or other regular maintenance intervals. Any Impala that has sat for long periods or changed owners recently deserves an especially careful look, since age, underinflation, and prior wheel changes can all affect how safely the current tires are operating.
