2023 Cadillac CT4 Tires

The 2023 Cadillac CT4 uses five primary tire sizes: 225/45R17, 235/35R19, 235/40R18, 255/35R18, and 275/35R18. Which one applies depends on the exact trim and wheel package, and the V Blackwing uses a staggered arrangement with 255/35R18 in front and 275/35R18 in the rear.

The right starting point is the wheel size currently on the car and the exact sub-model name on the vehicle. A CT4 Luxury may use 17-inch or 19-inch tires, while other trims may use 18-inch or 19-inch sizes, so checking the door placard, existing tire size, and wheel diameter helps prevent ordering the right tire in the wrong rim size.

The 2023 Cadillac CT4 uses 17-inch, 18-inch, and 19-inch rim diameters depending on configuration. The 225/45R17 size fits a 17-inch wheel, the 235/40R18, 255/35R18, and 275/35R18 sizes fit 18-inch wheels, and the 235/35R19 size fits a 19-inch wheel.

Rim diameter should be confirmed before anything else, because a tire for one diameter cannot be mounted on another. After that, wheel width still matters when comparing specific tire options, especially on performance-oriented CT4 setups where product specifications can vary within the same nominal tire size.

The 2023 Cadillac CT4 has more than one tire size because the lineup includes different trims, driveline combinations, wheel packages, and a staggered V Blackwing setup. Luxury models can use 225/45R17 or 235/35R19, while Premium Luxury, Sport, and V models can use 235/35R19 or 235/40R18.

That means tire selection is tied to the exact configuration rather than the CT4 name alone. The safest approach is to verify the sub-model, look at the current tire sidewall, and measure or confirm the wheel diameter before comparing brands, sidewall styles, or performance series.

Start with the exact tire size and wheel diameter that match the car, since the 2023 Cadillac CT4 uses several different radial fitments. After size is confirmed, compare tire series, rim-width specifications, load figures where listed, sidewall treatment, and whether the tire is intended to preserve a stock-looking presentation or emphasize a more aggressive performance style.

The best comparison is not just one brand against another, but how each option fits the actual CT4 setup and how the car is driven. A 17-inch Luxury wheel opens different styling choices than an 18-inch or 19-inch fitment, while the V Blackwing’s staggered arrangement adds another layer of wheel-width and axle-position confirmation.

Blackwall is the most common sidewall style across 2023 Cadillac CT4 tire sizes. In 225/45R17, there are also raised white letter and redline options, which add a more visual, enthusiast-oriented look without changing the basic size designation or the fact that the tire is still a radial construction.

Sidewall style is mainly an appearance choice once the correct size and wheel diameter are established. On a CT4 with 17-inch wheels, those extra style options can change the car’s visual character noticeably, while 18-inch and 19-inch fitments stay more focused on blackwall performance presentation.

Tires for the 2023 Cadillac CT4 are available from BFGoodrich, Nitto, and Pro-Trac, depending on size. BFGoodrich appears across multiple CT4 sizes and series, Nitto offers NT555 G2 options in several fitments, and Pro-Trac appears in 225/45R17 with raised white letter and redline sidewall treatments.

Brand choice should come after fitment is locked down, because not every brand appears in every CT4 size. Once the correct size is confirmed, compare the available series, sidewall style, rim-width specification, and any stated load figures so the final choice matches both the car’s wheel setup and the look you want.

A period-style approach on a 2023 Cadillac CT4 is less about vintage restoration and more about preserving the visual character of the specific wheel package already on the car. That usually means staying with the original tire size for the trim and wheel diameter, then choosing a sidewall and tire series that matches the car’s intended look.

For most CT4 fitments, blackwall tires maintain the modern luxury-sport appearance the car was designed around. If the car uses 225/45R17, raised white letter or redline options create a more customized presentation, but the wheel diameter, tire size, and overall fitment still need to remain correct for the vehicle.

On a 2023 Cadillac CT4, construction does not create a bias-ply versus radial decision because the primary fitments are all radial. Appearance changes come more from sidewall treatment, tire series, section width, and whether the car uses 17-inch, 18-inch, or 19-inch wheels than from switching construction types.

That makes visual planning more straightforward than on an older collector car. The main question is whether the goal is to maintain the car’s contemporary blackwall performance look or add a more distinctive appearance through the available raised white letter or redline options in 225/45R17.

Yes, modifications can affect tire fitment on a 2023 Cadillac CT4 even when the tire size itself looks correct on paper. Aftermarket wheels, changes in wheel width or offset, lowered suspension, brake upgrades, or body alterations can all change how much room the tire has at the fender, inner liner, and steering points.

That matters even more on trims using lower-profile 18-inch and 19-inch tires, and especially on the V Blackwing’s staggered setup. If the CT4 has been modified, check axle position, wheel diameter, wheel width, and clearance through the full steering range before settling on a replacement tire.

Before driving a 2023 Cadillac CT4 on new tires, confirm that the size matches the trim and wheel diameter, then inspect inflation pressure, valve stems, and bead seating. It is also smart to make sure the tires are mounted in the correct front or rear positions when the car uses a staggered V Blackwing arrangement.

A short visual check can prevent bigger problems later. Look for proper clearance around the suspension and fenders, verify that there is no rubbing at full steering lock, and monitor the tires during the first few drives for vibration, uneven wear, or air loss that could point to a wheel or installation issue.

Before a longer drive in a 2023 Cadillac CT4, check tire pressure when the tires are cold, inspect the tread and sidewalls for cuts or bulges, and confirm that all four tires match the intended setup for the car. On a V Blackwing, that also means verifying that the front and rear staggered sizes are in their proper positions.

Longer trips put more heat and load into the tires, so small issues become more noticeable. A quick walkaround for uneven wear, embedded debris, or signs of rubbing is worthwhile, and any CT4 with aftermarket wheels or suspension changes deserves an extra clearance check before heading out.