2011 Acura Tire Fitment Guide

2011 Acura vehicles use five tire sizes across three model lines: 245/45R18 for the RL and one TL application, 245/50R17 for a TL application, 245/40R19 for a TL application, 225/50R17 for the TSX, and 235/45R18 for the TSX. Rim diameters span 17, 18, and 19 inches, so these sizes are not interchangeable across the full Acura range for that year.

The practical takeaway is that year and make alone are not enough. A 2011 Acura TL can use three different sizes depending on wheel package, while the RL and TSX each follow narrower fitment paths. Start by confirming your model and the wheel diameter stamped on the wheel or verified from the car itself, then match the tire size to that setup before comparing brands or tread styles.

On a 2011 Acura, 245/45R18 means the tire is 245 millimeters wide, has a 45-series aspect ratio, uses radial construction, and fits an 18-inch wheel. That size appears on the RL and on certain TL applications. Available products in this size use blackwall styling, and speed ratings vary between W and Y depending on the tire.

That code matters because each part affects fitment. The 18 at the end must match an 18-inch wheel, and the 245/45 proportions are part of the car’s intended tire diameter and stance. If your Acura has 17-inch or 19-inch wheels, this is not the correct fitment even if the car is also a 2011 TL. Use the full size code, not just the width, when narrowing your choices.

No. The 2011 Acura lineup splits across multiple sizes and wheel diameters. The RL uses 245/45R18, the TL uses 245/45R18, 245/50R17, or 245/40R19 depending on application, and the TSX uses either 225/50R17 or 235/45R18. Only 245/45R18 is shared, and even that applies only to the RL and one part of the TL range.

That model-to-model variation means a buyer should identify the car as an RL, TL, or TSX first, then confirm the installed wheel size. It also means one TL cannot automatically use the same tire as another TL without checking. When a year-and-make page shows several sizes like this, it works best as a roadmap: match the model, match the wheel diameter, then choose the tire.

The 2011 Acura sizes with product coverage here are available in blackwall form. That applies to 245/45R18, 245/40R19, 225/50R17, and 235/45R18. All of those are modern radial fitments, so the sidewall presentation follows the understated look most buyers expect on a contemporary Acura sedan rather than a whitewall or period-style collector sidewall treatment.

For a 2011 Acura, blackwall is the natural visual match whether the car is kept stock or simply maintained as a clean modern sport-luxury sedan. The more important visual difference usually comes from wheel diameter and tire profile, especially on TL and TSX models that can move between 17-, 18-, and 19-inch packages. Once the correct size is confirmed, sidewall style is a straightforward choice in this year range.

BFGoodrich and Nitto cover the 2011 Acura sizes that currently have product choices here. In 245/45R18, both BFGoodrich and Nitto are available; 245/40R19 is covered by BFGoodrich; 225/50R17 is available from BFGoodrich and Nitto; and 235/45R18 is covered by BFGoodrich. Every available option in these sizes is a radial blackwall tire.

That means brand choice depends partly on your exact size. A TL on 19-inch wheels has a narrower brand pool than an RL or TL using 245/45R18, while a TSX on 17-inch wheels can choose between BFGoodrich and Nitto. Once you know your Acura’s correct size, compare the available series within that size rather than assuming every brand covers the whole 2011 Acura lineup.

For a 2011 Acura, the difference depends on size, but the two series overlap in key fitments. In 245/45R18, g-Force Sport COMP-2 carries a 96W service description with a 1,565-pound load figure at 51 psi and weighs 28 pounds, while g-Force Phenom T/A carries a 100Y service description with a 1,764-pound load figure at 50 psi and weighs 25.95 pounds. In 245/40R19, Sport COMP-2 is 98W XL at 1,653 pounds and 50 psi, while Phenom T/A is 98Y at 1,653 pounds and 50 psi.

Those differences matter most if you are comparing service description, speed category, and published load figure within the same Acura size. A buyer with an RL or TL on 245/45R18 may focus on the jump from W to Y and the higher stated load figure in the Phenom T/A, while a TL on 245/40R19 can compare similar load capacity with different speed categories. Always compare within your exact size, not across different wheel diameters.

Rim width ranges vary by tire size on 2011 Acura vehicles. For 245/45R18, the range is 7.5 to 9.0 inches. For 245/40R19, it is 8.0 to 9.5 inches. For 225/50R17, it is 6.0 to 8.0 inches, and for 235/45R18, it is 7.5 to 9.0 inches.

Those ranges are useful because they show that wheel diameter alone is not the whole story. Two 18-inch Acura fitments can still differ in width requirements, and a tire should be matched to both the wheel diameter and the wheel width already on the car. Before selecting a tire, verify the actual wheel dimensions so the chosen size falls comfortably within the published rim-width range for that specific fitment.

The available 2011 Acura products here are modern radial tires, and none carry a tube-type marking. That points to tubeless fitment across the covered 17-, 18-, and 19-inch sizes rather than the inner-tube requirements seen on earlier collector applications. The size descriptions and overall product style align with contemporary passenger-car tubeless use.

Even so, it is wise to inspect the wheels as part of the decision. A clean, undamaged wheel and a sound valve stem are just as important as choosing the correct tire size, especially on a sedan that may sit for periods and then return to regular road use. If your Acura still wears factory-style wheels, a basic condition check before mounting new tires helps avoid preventable air-loss problems later.

A 2011 Acura should be stored away from direct sunlight, ozone sources such as electric motors and compressors, and persistent moisture. Keep the tires inflated to the appropriate operating range for storage, move the car periodically if possible, and avoid letting it sit for long stretches on one footprint if it will be parked for months at a time. Modern radials resist storage flat-spotting better than older bias-ply designs, but they still age from environment and inactivity.

The best storage routine is simple and consistent. Clean the tires, keep the car on a dry surface, and check pressure before and after a storage season. If the car is part of a collection and sees only occasional use, a brief monthly roll can help reduce static stress. Good storage habits preserve ride quality and sidewall condition just as effectively as choosing the right size in the first place.

On a 2011 Acura, tire age matters more than mileage once the car becomes a lower-use enthusiast or secondary vehicle. A sensible rule is to begin evaluating tires closely at about five to seven years of age and to treat around ten years as the point where replacement deserves serious consideration regardless of tread depth. The DOT date code on the sidewall gives the tire’s week and year of manufacture.

That approach is especially important for cars that still look fresh but spend much of their time parked. Tread can remain deep while the rubber hardens, cracks, or loses its original flexibility. If your Acura sees highway use, seasonal road trips, or spirited weekend driving, age-based inspection is more valuable than waiting for the tread to wear out. A newer tire often restores confidence long before the old one looks obviously worn.

Tires on a 2011 Acura should be checked before every drive, and they deserve a more deliberate inspection before longer highway outings. Look for sidewall cracking, cuts, punctures, bulges, uneven tread wear, and any sign that the tire is losing pressure between drives. On a modern radial Acura fitment, also pay close attention to valve-stem condition and any vibration that suggests an alignment or balance issue.

Regular inspection helps catch problems while they are still small. A TL or TSX with lower-profile tires can transmit impact damage more directly from potholes, while an RL used infrequently may hide age-related issues until the next trip. Make tire inspection part of a broader pre-drive routine that includes pressures, spare-tire condition, and a quick visual look at the wheels. That habit is one of the simplest ways to protect both the car and the drive.

Yes, the available 2011 Acura tire sizes here are modern radial designs with highway-capable speed categories. Products in 245/45R18 and 245/40R19 appear in W and Y ratings, with ceilings of 118 mph and 186+ mph respectively, while 225/50R17 and 235/45R18 appear in W-rated form with a 118 mph ceiling. Those ratings are comfortably above normal U.S. highway speeds when the tires are in good condition and properly inflated.

Real-world highway safety still depends on more than the letter rating. Tire age, pressure, alignment, wheel condition, suspension wear, and the overall mechanical health of the Acura matter just as much. A 2011 RL, TL, or TSX in sound condition should have no trouble with ordinary highway use on the correct size, but an old or damaged tire can undermine that margin quickly. Safe road use starts with condition and correct fitment, not speed rating alone.

Inflation pressure on a 2011 Acura should follow the vehicle placard or owner’s manual for normal service, not a blanket number carried over from another Acura model or size. Some available tires also publish maximum load and pressure figures, such as 1,764 pounds at 50 psi for certain 245/45R18 products, 1,653 pounds at 50 psi for certain 245/40R19 and 235/45R18 products, and 1,477 or 1,653 pounds at 50 to 51 psi for some 225/50R17 products. Those figures describe the tire’s rated limit, not the routine cold inflation pressure the car necessarily wants.

The practical rule is to use the carmaker’s recommended cold pressure for daily operation, then compare it against the tire manufacturer’s published limits to stay within safe operating bounds. Do not transfer a pressure figure from a 19-inch TL tire to a 17-inch TSX tire just because both are on a 2011 Acura. Correct pressure supports handling, wear, and ride quality, and it is one of the easiest settings to verify before every drive.

Before a longer trip in a 2011 Acura, inspect each tire for cracking, punctures, bulges, uneven wear, and proper cold inflation pressure. Check the valve stems, confirm that the spare is usable, and make sure the tires are the correct size for the car’s wheel package. A longer drive is also the right time to notice any vibration, pulling, or noise that could point to balance, alignment, or suspension issues.

Tire inspection should be one part of a broader pre-drive check on a car of this age. Verify fluids, brakes, battery condition, and basic lighting as well, especially if the car has been parked between outings. On a TL with multiple possible wheel packages, confirm that all four road tires match the intended size before setting off. A careful ten-minute check in the garage is far easier than solving a preventable problem on the shoulder.