2021 Chrysler Tire Fitment Guide

2021 Chrysler vehicles use four tire sizes, all on the Chrysler 300: 215/65R17, 225/60R18, 235/55R19, and 245/45R20. These are all radial sizes, and each one mounts on its own wheel diameter: 17, 18, 19, or 20 inches. Rim-width guidance is available here for 245/45R20 at 7.5 to 9.0 inches, while the other sizes still need to be matched to the wheel diameter already on the car.

The practical takeaway is that a 2021 Chrysler buyer needs to identify the exact wheel package first, not just the year and model name. Two Chrysler 300 sedans can look similar yet use different tire sizes depending on trim and wheel choice. Checking the sidewall on the current tires or verifying the factory wheel diameter is the quickest way to avoid ordering the wrong size.

On a 2021 Chrysler, 245/45R20 means the tire is 245 millimeters wide, has a 45-series aspect ratio, uses radial construction, and fits a 20-inch wheel. That size appears on certain Chrysler 300 wheel packages and is the largest wheel-diameter fitment used here. Available examples carry performance-oriented service descriptions, including W and Y speed ratings, and the examples shown for this size fit rims around 7.5 to 9.0 inches wide.

That code matters because every part of it affects fitment. A 245/45R20 cannot replace a 17-, 18-, or 19-inch tire without changing wheels, and even small differences in aspect ratio alter overall diameter and appearance. If your 2021 Chrysler 300 already wears 20-inch wheels, matching the full size code rather than only the width or rim diameter is the safest starting point.

No. The 2021 Chrysler range covered here consists of the Chrysler 300, and even within that single model there are four different tire sizes: 215/65R17, 225/60R18, 235/55R19, and 245/45R20. All are radial tires, but they correspond to different factory wheel diameters and wheel-package combinations rather than one universal fitment for every 300.

That means year and make alone are not enough to choose correctly. A 2021 Chrysler 300 with 17-inch wheels needs a different tire than one equipped with 20-inch wheels, even though both are the same model family. If you are unsure, check the tire placard, the current sidewall marking, or the wheel itself before moving on to brand or tread-pattern decisions.

For the 2021 Chrysler 300 fitments covered here, the available 245/45R20 products use a blackwall sidewall style. That matches the modern appearance expected on a late-model full-size sedan like the Chrysler 300, where narrow whitewalls or period-style sidewall treatments are not part of the usual factory visual language. All four 2021 Chrysler sizes are modern radial applications rather than vintage-style fitments.

Sidewall appearance matters less for authenticity on a 2021 Chrysler than it would on a mid-century collector car, but it still affects the overall look of the vehicle. Most owners will simply want a clean blackwall tire that suits the 300’s contemporary styling. Once the sidewall style is settled, the more important decisions become correct size, wheel diameter, and the service description of the specific tire.

For the 2021 Chrysler 300 sizes covered here, 245/45R20 is available from BFGoodrich and Nitto. BFGoodrich appears with g-Force Sport COMP-2, g-Force COMP-2 A/S, and g-Force Phenom T/A offerings, while Nitto appears with the NT555 G2. Those are all radial blackwall tires aimed at modern passenger-car use rather than vintage-style reproduction products.

Brand choice matters once the correct size is confirmed. Some owners prefer a more touring-friendly approach, while others focus on a more performance-oriented personality within the same 20-inch fitment. On a 2021 Chrysler 300, it makes sense to narrow the search in this order: verify the exact tire size on the car, then compare the brands available in that size, and finally look at the service description and intended use.

For the 2021 Chrysler 300 in 245/45R20, BFGoodrich g-Force Sport COMP-2 and Nitto NT555 G2 share the same basic size and both use radial construction with blackwall styling. The BFGoodrich example carries a 103W service description, a 1,930-pound load figure at 50 psi, a rim-width range of 7.5 to 9.0 inches, and a 30-pound weight. The Nitto NT555 G2 also carries a 103W service description and weighs 30.38 pounds.

Those similarities mean the real comparison is not about basic fitment, since both target the same 20-inch Chrysler 300 application. Instead, it comes down to the exact tire series you prefer within that size and whether the supporting specs such as published rim-width range or load detail matter for your setup. When two tires share the same size code, confirming the wheel width and intended driving use is the next sensible step.

Rim-width guidance is available here for the 2021 Chrysler 300 in 245/45R20, where the tire fits rims from 7.5 to 9.0 inches wide on the BFGoodrich examples. That size also uses a 20-inch rim diameter, which must match the wheel exactly. The other 2021 Chrysler 300 sizes still need to match their correct wheel diameters of 17, 18, or 19 inches.

Rim width matters because the same tire size can behave differently if the wheel is outside the manufacturer’s approved range. Before replacing tires on a 2021 Chrysler 300, confirm both the wheel diameter and the actual wheel width, especially if the car has aftermarket wheels. That prevents clearance issues and helps ensure the tire sits on the wheel the way the manufacturer intended.

The 2021 Chrysler 300 uses modern radial tire sizes, and the available 245/45R20 examples are tubeless radial products. One BFGoodrich example explicitly includes a tubeless marking, and the overall application reflects modern one-piece automotive wheel practice rather than tube-type vintage construction. Nothing about these 2021 Chrysler sizes suggests the routine use of inner tubes in normal factory-style fitment.

That said, tube use should still follow the exact tire and wheel combination, not a blanket assumption. If a 2021 Chrysler 300 has damaged wheels, unusual aftermarket wheels, or a special-use setup, confirm compatibility with the wheel manufacturer and the tire maker’s service information. For most stock-style 300 applications, the more important setup checks are correct size, wheel condition, and valve-stem condition.

A 2021 Chrysler should be stored on clean, properly inflated tires in a cool, dry space away from direct sunlight, electric motors, welders, battery chargers, and other ozone sources that can age rubber prematurely. Moisture control matters, and the car should not sit for long periods on underinflated tires. Because all the fitments here are radial rather than bias-ply, they are generally less prone to severe storage flat-spotting than older collector-tire constructions.

If the car will sit for extended periods, move it occasionally so the same contact patch is not carrying the full load month after month. Some owners also use stands or tire cradles for long-term storage, especially on heavier sedans like the Chrysler 300. Good storage habits help preserve ride quality, reduce the chance of flat spotting, and extend the useful life of the tires before age becomes the limiting factor.

Tire life on a 2021 Chrysler is usually determined as much by age as by mileage, especially on lower-use cars. A sensible rule is to begin inspecting more critically once tires reach the five- to seven-year range and to consider replacement around the ten-year point regardless of remaining tread. The DOT date code on the sidewall identifies when the tire was built and is one of the first things to check.

That age-based approach is important because a Chrysler 300 can still look fine on the outside while the rubber hardens over time. Heat cycles, storage conditions, and exposure to sunlight all affect longevity. If the car is driven infrequently, treat tread depth as only one part of the story and pay equal attention to sidewall condition, ride quality, and any signs of vibration or pressure loss.

Tires on a 2021 Chrysler should be checked before every drive and given a closer inspection before any longer trip. Look for uneven wear, cuts, punctures, bulges, sidewall cracking, and any loss of inflation pressure. Since these are tubeless radial applications, valve stems and bead sealing surfaces are also worth checking periodically, especially if the wheels have seen curb contact or corrosion.

Frequent inspection matters because full-size sedans can mask early tire issues until they become more serious at speed. A quick walkaround and pressure check takes very little time and can catch a problem before it becomes a vibration, handling issue, or roadside inconvenience. On a 2021 Chrysler 300, that habit is especially useful if the car alternates between regular use and long periods of storage.

Yes, the 2021 Chrysler 300 sizes covered here are modern radial tires intended for contemporary road use, and the available 245/45R20 products include W-rated tires up to 168 mph and Y-rated tires at 186 mph or higher. Those ratings are well beyond normal U.S. highway speeds. In ordinary driving, the condition of the tire, the inflation pressure, and the Chrysler 300’s overall mechanical state matter more than the raw speed letter alone.

Safety on the highway still depends on using the exact correct size and keeping the tires in good condition. A damaged or underinflated tire is a bigger concern than choosing between two appropriately rated options for legal road speeds. Before longer highway use in a 2021 Chrysler, confirm pressure, inspect for impact damage, and make sure the tires match the wheel diameter and service requirements of the car.

Inflation pressure for a 2021 Chrysler should follow the factory vehicle placard or owner’s manual for the exact wheel and tire package on the car. For 245/45R20, available examples include load figures around 1,929 to 1,930 pounds at 50 psi, but that number is the tire’s rated-capacity reference and should not automatically be used as the everyday operating pressure. Each size should be treated on its own terms rather than borrowing pressure guidance from a different wheel package.

That distinction matters because the 2021 Chrysler 300 uses four different tire sizes across different wheel diameters. The correct running pressure is tied to the car’s weight distribution, suspension tuning, and the specific size originally fitted, not just the maximum pressure molded into the tire. Start with the factory recommendation, then confirm that the replacement tire’s service information is appropriate for that application.

Before a longer drive in a 2021 Chrysler, inspect all four tires and the spare for cracking, punctures, cuts, bulges, uneven wear, and proper cold inflation pressure. Check the valve stems, make sure the tread is wearing evenly, and verify that all four tires match the intended size for the wheel package on the car. On a Chrysler 300, it is also wise to make sure no wheel has been bent or damaged by pothole impacts.

Tires are only one part of the pre-trip picture on any car, even a modern one. A longer outing is also a good time to check alignment behavior, brake feel, and whether the car has developed any vibration at speed that may point to balance or suspension issues. Catching those problems in the driveway is always better than discovering them once the trip is underway.