The Acura RLX is a well-built and durable car that combines performance and luxury. It’s essential to know the correct wheel fitting, whether you’re keeping your factory setup or switching to a custom wheel style. The RLX underwent a minor update between 2013 and 2021; however, the basic wheel specifications remained unchanged. But some changes to the design and suspension in the facelift model might have a small effect on the alternatives you have for aftermarket parts.
This handbook has all the information you need, from bolt patterns and offsets to tire sizes and center bores. We have the fitment standards broken down by generation to assist you min smart choices, whether you want a sporty, aggressive style or want to keep your OEM ride smooth. Let’s get into the details for both the 2013–2017 and the facelifted 2018–2021 Acura RLX models so you may choose wheels that look fantastic and work even better.
Understanding Acura RLX Wheel Fitment Basics
When you talk about wheel fitment, you’re talking about how well a set of wheels will fit and work on your car. Wheel fitting includes more than just size. It also includes elements like the bolt pattern, offset, hub bore, rim width, and tire size. If you get one of these wrong, you could have problems with rubbing, vibrations, or even safety.
There are five lug holes on the Acura RLX, and they are spaced 120 millimeters apart. The hub bore is 64.1mm, which fits tightly over the hub of the car to keep everything in the middle. For both models, the offset, which affects how far the wheel sits inward or outward, is +55mm. The suggested tire size for the factory rim size of 19×8.0 inches is 245/40 R19.
You may confidently upgrade your car’s looks, performance, or comfort once you know these basics.
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Acura RLX (2013–2017) Wheel Fitment Specifications
Bolt Pattern and Lug Nut Info
The bolt pattern for the 2013–2017 Acura RLX is 5×120, which is a standard size for many high-end sedans. This indicates that there are five lugs on a circle that is 120mm wide. The lug nuts have M14 x 1.5 threads, and the optimum way to tighten them is with a torque wrench set to 94 ft-lbs (127 Nm).
It’s vital to follow this guideline while changing wheels or lug nuts. If you use the wrong thread sizes or over-torque the studs, they could break while you’re driving, which could be quite dangerous. Always check to see if the wheel has conical or ball-seat lugs before you switch to aftermarket wheels. This depends on the brand of wheel. The factory lug nuts are chrome, closed-end ones that fit perfectly under the OEM wheel caps. You could require extended thread or open-end lugs to keep things safe and secure if you’re adding spacers or going with a deep-lip design.
| Year | Center Bore | Bolt Pattern | Lug Nut Thread | Torque (Nm) | OEM Tire Size | OEM Rim Size | OEM Offset Range (mm) | Tire Pressure (Front / Rear, bar) | Aftermarket Wheel Size Range |
| 2013 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/45R18 96V | 8Jx18 ET50 | 48 – 52 | 2.2 / 2.2 | 18-22” |
| 2014 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/40ZR19 98W | 8Jx19 ET50 | 48 – 52 | 2.4 / 2.3 | 18-22” |
| 2015 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/35ZR20 97Y | 8.5Jx20 ET50 | Not specified | 2.5 / 2.5 | 18-22” |
| 2016 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/45R18 96V | 8Jx18 ET50 | 48 – 52 | 2.2 / 2.2 | 18-22” |
| 2017 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/40ZR19 98W | 8Jx19 ET50 | 48 – 52 | 2.4 / 2.3 | 18-22” |
OEM Rim and Tire Sizes
The 2013–2017 Acura RLX comes with 19×8.0-inch wheels, which are a good size for both comfort and style. The stock tires that come with this arrangement are 245/40 R19. They give you a smooth, quiet ride and a good grip on the road. These tire sizes provide you with the perfect combination of sidewall height, width, and contact patch. This is especially crucial for a luxury sedan like the RLX.
You can safely go up to 20×8.5 or 20×9 wheels with a tire like 245/35 R20 or 255/35 R20 if you want to upgrade. Just make sure the offset stays near the factory setting. Just remember that low-profile tires can make the ride a little stiffer, but they can provide you with sharper handling and a more aggressive stance. If you want something that will last through the winter or all year, the OEM arrangement is usually the best solution.
Offset, Hub Bore, and Other Fitment Details
The factory offset for the wheels of the 2013–2017 Acura RLX is +55mm. This increased positive offset keeps the wheels closer to the suspension parts, which retains the clean OEM fit. If you’re getting new wheels from a different company, aim for offsets between +45mm and +55mm to keep everything in line and keep the wheels from rubbing on the inner fender.
The hub bore is 64.1 mm, which is the same as the factory hub. It’s recommended to acquire hub-centric wheels or use a correct hub ring if the bore is bigger when you buy wheels from a third party. This makes sure that the wheels are correctly centered, which cuts down on vibrations.
Don’t go too far with offset or bore mismatches. They could make the car seem cool, but they can also make the tires wear out faster and make it hard to steer. If you don’t want to change the suspension, stick with specs that are similar to stock.
Acura RLX Facelift (2018–2021) Wheel Fitment Specifications
Bolt Pattern and Lug Nut Info
Acura made the 2018–2021 facelift easier by keeping the 5×120 bolt pattern and M14 x 1.5 lug nut thread from the previous generation. This means that if you already have aftermarket wheels or lug nuts from an RLX made between 2013 and 2017, they should work fine.
Even if the pattern is the same, aftermarket wheel companies occasionally change the type of seat. Use OEM-style ball-seat lug nuts for the greatest results, or check with the company that made your wheels before you install them. Also, if you switch wheels, always re-torque your lug nuts after the first 50 to 100 miles. This helps make sure everything stays tight until the wheels settle in.
Finally, if you want your wheels to look wider by adding spacers, you might want to use extended-thread lug nuts. A lot of people like these modifications, but they are only safe if you use the right tools.
| Year | Center Bore | Bolt Pattern | Lug Nut Thread | Torque (Nm) | OEM Tire Size | OEM Rim Size | OEM Offset Range (mm) | Tire Pressure (Front / Rear, bar) | Aftermarket Wheel Size Range |
| 2018 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/45R18 96V | 8Jx18 ET50 | 48 – 52 | 2.2 / 2.2 | 18-22” |
| 2019 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/40ZR19 98W | 8Jx19 ET50 | 48 – 52 | 2.4 / 2.3 | 18-22” |
| 2020 Acura RLX | 64.1 mm | 5×120 | M14 x 1.5 | 127 | 245/35ZR20 97Y | 8.5Jx20 ET50 | Not specified | 2.5 / 2.5 | 18-22” |
OEM Rim and Tire Sizes
The new look of the Acura RLX still used the stock 19×8.0-inch rims with 245/40 R19 tires. Acura kept these dimensions for a reason: they strike the appropriate balance between ride quality, grip, and looks for this luxury flagship.
20-inch wheels, such as 20×9 with 255/35 R20 tires, are a good choice for drivers who want more visual impact without losing too much comfort. These settings fill the wheel wells more aggressively, but they could make the ride a little less smooth. The OEM 19s are still the best choice for people who live in places with bad roads or long winters.
Keep in mind that making wheels bigger changes the tire profile and total diameter. To avoid problems with your speedometer or traction systems, make sure your new configuration stays within 3% of the stock diameter.
Offset, Hub Bore, and Fitment Notes
The facelifted version has a +55 mm offset and a 64.1 mm hub bore, just like the old RLX. This makes sure that all generations are the same, which makes it easy for owners to upgrade their wheels. If you’re getting new wheels from a different brand, look for offsets between +45 and +50mm. Such an offset will keep the wheels lined up correctly and give your car a more aggressive stance.
If your new wheels have a bigger center bore, you need to use hub-centric rings just like you would with any other fitment modification. These rings help get rid of annoying vibrations at high speeds and keep you safe for a long time.
Remember that the facelifted RLX has a slightly changed bumper and trim design, but the wheel dimensions stay the same. If you stick to these sizes, you can be sure that your forged, cast, or flow-formed wheels will look good and work well.
Best Aftermarket Wheel Sizes for Acura RLX
Changing the wheels on your Acura RLX can completely change how it looks, but you need to pick the proper size. Many owners choose 20×9 or 20×10 wheels for a sleek, sporty look. These fit the fenders and go with 255/35 R20 or 275/30 R20 tires, depending on how wide you want them.
Make sure the bolt pattern is 5×120 and the offset is between +40mm and +50mm when you buy aftermarket wheels. This keeps the suspension from rubbing against the fenders and gives you enough space when you turn or drive with a full load.
If your hub bore is bigger than 64.1mm, you can use hub rings to make it fit. If you go too far with low offsets or wheels that are too wide, your car may not handle well, and your tires will wear out faster. Stick to specs that are well-balanced and work well with the car’s high-quality ride and chassis tune.
Tire Size Calculator and Sizing Tips
When you change your wheels, you need to keep the total rolling diameter of your tires the same so that your speedometer stays correct and your suspension geometry stays the same. You can use a tire size calculator to compare the stock size, which is 245/40 R19, with new sizes like 255/35 R20 or 275/30 R20.
This method is known as plus sizing. It lets you make the wheel bigger while making the tire sidewall smaller. You get a bolder posture and sharper handling, but it might not be as comfortable to ride in. The most important thing is to keep the diameter difference between the stock and the new one to less than 3%. This will keep ABS, traction control, and ride height from having problems.
Ensure your tires’ load rating is equal to or higher than the OEM’s. If the load index is not the same, the tires could fail, especially if you drive aggressively or go on long road trips. Choosing a larger tire size may enhance the appearance of your RLX without compromising drivability, provided it is done correctly.
Common Wheel Fitment Mistakes to Avoid
Even experienced fans make blunders when they change their wheels. Choosing the wrong offset is one of the most prevalent mistakes. If the offset is too low, the wheels may stick out too much, which can cause them to grind against the fenders when you turn or go over bumps. On the other hand, an excessively high offset pulls the wheels in, which can get in the way of suspension parts.
Not paying attention to the hub bore is another mistake. Hub-centric rings are needed for wheels with a bigger center bore to keep vibrations from happening at high speeds. If you don’t do this step, the steering wheel will often shake, even if everything is properly torqued.
Lastly, some owners overlook thinking about how much their tires will extend or how wide their wheels will be. Some people might think that putting a narrow tire on a wide wheel looks attractive, but it might shorten the life of the tire and make it more likely to get damaged on the side. When you change your bike, always think about how it looks and how it works.
Conclusion
The Acura RLX has a sophisticated platform that is ideal for small changes or big changes, especially when it comes to wheels. If you know your car’s wheel bolt pattern (5×120), rim size (19×8.0), hub bore (64.1mm), offset (+55mm), and tire size (245/40 R19), you can look into aftermarket options without worrying about how they will affect performance.
Wheels are a simple way to customize your RLX, but you must check specs and fitment. First, follow OEM requirements. If you are making a big change, ask an expert. That way, you’ll have a configuration that not only looks excellent but also works the way Acura meant it to.
FAQs
Q: Can I put 20-inch wheels on my Acura RLX?
Yes, 20-inch wheels like 20×9 or 20×10 fit well with the right offset (+45 to +50) and tire size (e.g., 255/35 R20). Please ensure that the overall diameter remains close to the factory specifications.
Q: Are 2013–2017 RLX wheels compatible with 2018–2021 models?
Absolutely. Both generations share the same bolt pattern (5×120), hub bore (64.1 mm), and offset (+55 mm), so wheels are interchangeable.
Q: What’s the ideal offset for aftermarket RLX wheels?
An offset between +45mm and +50 mm works best if you’re going for a wider stance without rubbing or clearance issues.
Q: Do I need hub-centric rings with aftermarket wheels?
If your new wheels have a larger center bore than 64.1 mm, yes—you’ll need hub-centric rings to ensure proper centering and avoid vibrations.
