The 2018 Lexus Trucks NX300 brought Lexus compact crossover luxury into a smaller, city-friendly package without losing the planted stance and upscale road manners buyers expect from the brand. Its sharp body lines and trim-specific appearance mean tire choice affects both the look and the way the vehicle sits on the road. The 2018 Lexus Trucks NX300 uses radial tire fitments in 225/65R17, 225/60R18, and 235/55R18 depending on sub-model and wheel setup. That makes the key decision less about vintage-style construction and more about confirming the exact sub-model, wheel diameter, and the type of driving the vehicle sees. Getting that right helps preserve proper proportions, clearance, and everyday usability.
Which Tire Size Is Right for The 2018 Lexus Trucks NX300
Three tire sizes apply to the 2018 Lexus Trucks NX300, and the right one depends on both sub-model and wheel diameter. Two 18-inch sizes are used alongside one 17-inch size, so the first step is confirming whether the vehicle has 17-inch or 18-inch wheels and whether it is a Base or F Sport. Once that is established, the decision shifts to choosing the right radial tire style and specifications for that exact setup.
225/60R18 is a metric radial size in which 225 identifies the nominal section width in millimeters, 60 is the aspect ratio, R designates radial construction, and 18 is the wheel diameter in inches. On the 2018 Lexus Trucks NX300, this size is one of the 18-inch fitments and appears across more than one sub-model. It suits buyers who need to stay with the common 18-inch wheel setup while preserving the intended overall proportions of the vehicle. Before choosing a tire in this size, confirm the wheel itself and make sure the vehicle has not been altered from its present ride height or wheel package.
225/65R17 is a metric radial size that translates to a 225-millimeter nominal section width, a 65-series profile, radial construction, and a 17-inch rim diameter. On the 2018 Lexus Trucks NX300, this is the 17-inch fitment used on certain Base models rather than a universal size across the range. Available product choices in this size can include different tire characters, and one available option is the BFGoodrich All-Terrain T/A KO2 with an RBL sidewall treatment. This size is the right place to start when the NX300 is on 17-inch wheels and the goal is to match the proper wheel diameter before comparing tread style and specification details.
235/55R18 is a metric radial size where 235 denotes nominal section width in millimeters, 55 is the aspect ratio, R marks radial construction, and 18 identifies the wheel diameter. For the 2018 Lexus Trucks NX300, this is an 18-inch fitment associated with specific configurations rather than every version of the model. Its slightly different width-and-profile combination makes sub-model confirmation important before selecting a tire. Buyers considering this size should verify that the vehicle is on the correct 18-inch wheel setup and that any aftermarket wheel or suspension changes have not altered clearance needs.
Sub-model fitment matters on the 2018 Lexus Trucks NX300 because the available tire sizes are not identical across the range. The first step is confirming whether the vehicle is a Base or F Sport and then matching that sub-model to the wheel diameter currently on the vehicle.
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2018 Lexus Trucks NX300 Base
The 2018 Lexus Trucks NX300 Base uses radial tire fitments in either 225/60R18 or 225/65R17, so wheel diameter confirmation is essential before choosing a replacement. That means the real decision is tied to the vehicle's present 17-inch or 18-inch setup rather than assuming one size covers every Base model.
The 2018 Lexus Trucks NX300 F Sport uses radial tire fitments in 225/60R18 or 235/55R18, both on 18-inch wheels. Tire selection for this sub-model starts with confirming which of those two 18-inch sizes is on the vehicle now, then comparing tire type and specification details within that exact size.
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 Lexus Trucks NX300 Tires for Sale
Available product coverage for the 2018 Lexus Trucks NX300 currently includes a 225/65R17 radial option from BFGoodrich in the All-Terrain T/A KO2 series with an RBL sidewall. That gives 17-inch NX300 buyers a useful comparison point if tread style, load specification, and rim-width compatibility are part of the decision.
These FAQs focus on the tire sizes used on the 2018 Lexus Trucks NX300, how fitment changes by sub-model and wheel diameter, and what to review before choosing replacement tires for everyday driving or modified vehicles.
Tire Size & Fitment
What tire size fits a 2018 Lexus Trucks NX300?
The 2018 Lexus Trucks NX300 uses three radial tire sizes: 225/65R17, 225/60R18, and 235/55R18. The correct size depends on the exact sub-model and wheel package, so there is not one universal tire size for every NX300 in the 2018 model year.
The most important first step is confirming the wheel diameter actually on the vehicle and then matching that to the sub-model. Base models can use either 225/65R17 or 225/60R18, while F Sport models use 225/60R18 or 235/55R18. If the vehicle has changed wheels since new, use the current wheel setup and clearance needs as the starting point.
What size rim does a 2018 Lexus Trucks NX300 use?
The 2018 Lexus Trucks NX300 uses either a 17-inch or 18-inch rim, depending on the tire size and sub-model configuration. The 225/65R17 size mounts on a 17-inch rim, while both 225/60R18 and 235/55R18 are 18-inch tire sizes.
Rim diameter should be confirmed before any tire shopping because a 17-inch tire cannot be mounted on an 18-inch wheel, and the reverse is also true. It also helps to check wheel width and any aftermarket wheel changes, especially if the NX300 has been customized. That prevents choosing a tire that matches the model year but not the wheel currently on the vehicle.
Do all 2018 Lexus Trucks NX300 sub-models use the same tire size?
No. The 2018 Lexus Trucks NX300 Base and F Sport do not share exactly the same tire-size combinations. Both can use 225/60R18, but the Base also uses 225/65R17, while the F Sport also uses 235/55R18.
That overlap is why buyers sometimes assume every NX300 can use the same replacement tire, but the fitment is more specific than that. Checking the sub-model badge helps, yet the wheel and tire already on the vehicle should still be verified before purchase. Matching the correct size preserves the intended relationship between rim diameter, tire profile, and clearance.
Choosing the Right Tire
What should I consider when choosing a 2018 Lexus Trucks NX300 tire?
Start with the exact tire size already assigned to the vehicle's sub-model and wheel diameter: 225/65R17, 225/60R18, or 235/55R18. Once size is confirmed, compare tire construction, intended use, load specification, and any visible differences in tread character or sidewall treatment among the available choices.
A daily-driven NX300 may call for a different type of tire than one used in rougher conditions or on less predictable roads. Wheel width, ride height changes, and present clearance should also be checked before moving to a different tire style within the same size family. The best comparison process starts with fitment accuracy and then narrows the choice by how the vehicle is actually used.
What brands offer tires for the 2018 Lexus Trucks NX300?
BFGoodrich is one of the available brands for the 2018 Lexus Trucks NX300, with product coverage shown in 225/65R17. That gives NX300 owners a brand option in a radial tire sized for certain 17-inch Base-model applications.
Brand choice matters most after the correct size has been established, because an excellent tire in the wrong diameter or profile does not solve the fitment question. It is also helpful to compare the tire series and intended use within a brand's offering. For the NX300, that means treating brand as one part of the decision, not the starting point.
What sidewall styles are available for 2018 Lexus Trucks NX300 tires?
An RBL sidewall style is available in 225/65R17 for the 2018 Lexus Trucks NX300. RBL refers to outlined raised black lettering, which gives the tire a more pronounced visual treatment than a plain black sidewall.
Sidewall style affects appearance more than fitment, so it should be chosen only after the correct size and wheel diameter are confirmed. On a crossover like the NX300, that visual change can make the tire look more utility-oriented or more restrained depending on the rest of the vehicle's setup. Checking photos of the actual wheel-and-tire combination can help avoid a look that feels out of place.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Lexus Trucks NX300?
Yes. Wheel, suspension, and ride-height changes can all affect tire fitment on a 2018 Lexus Trucks NX300, even when the tire size is one normally used on that model. A different wheel width, offset, or aftermarket suspension setup can change how much room the tire has during steering and suspension travel.
That is why the current vehicle setup matters just as much as the original size range. A stock-height NX300 on factory-style wheels may have very different clearance needs than one with altered wheels or lowered suspension. Before mounting new tires, check steering lock, inner clearance, outer fender clearance, and the wheel dimensions already on the vehicle.
What should I inspect before driving a 2018 Lexus Trucks NX300 on new tires?
Before driving a 2018 Lexus Trucks NX300 on new tires, inspect tire pressure, wheel-nut torque, valve stems, and the general condition of the wheels. It is also smart to confirm that the tire size on the vehicle matches the intended wheel diameter and that there is no rubbing at full steering lock.
A short, careful road test can reveal issues that are easy to miss while the vehicle is parked. Listen for contact over bumps, check that the steering returns normally, and recheck pressure after the first drive. Uneven suspension wear or alignment problems can shorten tire life quickly, so unusual wear patterns should be addressed early rather than after miles accumulate.
How often should tires on a 2018 Lexus Trucks NX300 be inspected?
Tires on a 2018 Lexus Trucks NX300 should be inspected regularly, not only when replacement time arrives. Pressure, tread condition, cuts, bulges, sidewall damage, and irregular wear should be checked often enough that changes are noticed before they become a safety or drivability problem.
Vehicles that sit for long periods still need attention because age, temperature swings, and storage conditions can affect the tires even when mileage stays low. Looking over the tires before longer trips is especially important, as is checking for slow air loss. Consistent inspection helps catch alignment, suspension, or wheel issues that may show up first at the tire.
