2018 Lexus Trucks covered a broad slice of the premium utility market, from the body-on-frame GX460 and flagship LX570 to the NX and RX crossover families that defined Lexus comfort in everyday use. That mix means tire selection is not a one-size-fits-all decision across the brand for this model year. Eight different radial sizes appear across eight models, with some shared within the NX and RX families and others tied to a single model. For 2018 Lexus Trucks, the first thing to confirm is your exact model and wheel diameter, since that determines whether you need a 17-, 18-, 20-, or 21-inch fitment before comparing tread style or driving priorities.
Which Tire Size Is Right for Your 2018 Lexus Trucks
Eight tire sizes were used across 2018 Lexus Trucks models, and they vary by model rather than carrying across the full lineup. The real decision starts with identifying the correct model and wheel diameter, since these fitments span 17-, 18-, 20-, and 21-inch rims instead of offering one interchangeable size family. Understanding that distinction before choosing a product saves time and helps match the tire to the right vehicle.
265/60R18 is a metric radial size with a 265-millimeter section width, a stated 60-series profile, and an 18-inch rim diameter. Product coverage in this size is radial, and individual brand, sidewall, tube, and speed-rating details should be confirmed on the specific product selected. This size is specific to the GX460 rather than universal across 2018 Lexus Trucks, making model identification the key first step. It suits owners who want to stay with the factory-style metric radial format used on this body-on-frame luxury SUV.
275/50R21 is a metric radial size that uses a 275-millimeter section width, a 50-series profile, and a 21-inch rim diameter. Product coverage in this size is radial, and buyers should verify the exact sidewall treatment, speed rating, and any construction details on the tire they choose. This size is specific to the LX570 and is not shared across the rest of the 2018 Lexus Trucks range. It is the fitment to follow when your LX570 is equipped with the larger 21-inch wheel package.
285/50R20 is a metric radial size with a 285-millimeter section width, a 50-series profile, and a 20-inch rim diameter. Product coverage in this size is radial, so the main checks are the exact brand, sidewall style, and service description attached to the tire you are considering. This fitment is also LX570-specific rather than shared with other 2018 Lexus Trucks models. It is the correct path for LX570 owners running the 20-inch wheel option instead of the 21-inch setup.
225/60R18 is a metric radial size with a 225-millimeter section width, a 60-series profile, and an 18-inch rim diameter. Product coverage in this size is radial, and exact sidewall appearance, speed rating, and service details depend on the product chosen. This size is shared by the NX300 and NX300h, so it applies to both the conventional and hybrid versions of Lexus' compact crossover. It is the right place to start when those models are equipped with 18-inch wheels and you want to stay with the original metric radial format.
Year(s): 2018|Fit(s): NX300, NX300h|Construction: Radial|Rim: 17 in
225/65R17 is a metric radial size with a 225-millimeter section width, a 65-series profile, and a 17-inch rim diameter. BFGoodrich offers this size in an RBL sidewall with an S speed rating capped at 112 mph, and it fits 17-inch rims with a 6.0- to 8.0-inch width range. This size is shared by the NX300 and NX300h rather than the full 2018 Lexus Trucks lineup. It makes sense for owners of those models who need the 17-inch fitment and want a more rugged all-terrain style within the correct size.
235/55R18 is a metric radial size that uses a 235-millimeter section width, a 55-series profile, and an 18-inch rim diameter. Product coverage in this size is radial, and exact sidewall styling plus service specifications vary with the tire selected. This fitment is specific to the NX300 and does not carry over to the NX300h or other 2018 Lexus Trucks models. It is the size to confirm when your NX300 uses the wider 18-inch application rather than the 225-section alternatives.
235/55R20 is a metric radial size with a 235-millimeter section width, a 55-series profile, and a 20-inch rim diameter. Product coverage in this size is radial, and buyers should confirm the exact speed rating, sidewall treatment, and intended use on the product they choose. This size is shared across the RX350, RX350L, RX450h, and RX450hL, making it an RX-family fitment rather than a full-line Lexus Trucks size. It is the correct route for those RX models when fitted with their 20-inch wheel package.
235/65R18 is a metric radial size that pairs a 235-millimeter section width with a 65-series profile on an 18-inch rim. Product coverage in this size is radial, so the exact brand, sidewall style, and service rating should be matched to how the vehicle is used. This size is shared by the RX350, RX350L, RX450h, and RX450hL and is confined to that RX family group. It is the fitment to confirm when one of those models carries the 18-inch wheel setup instead of the 20-inch option.
Eight 2018 Lexus Trucks models are covered here, ranging from traditional SUVs to luxury crossovers and hybrid variants. Tire size varies by model, and in several cases by wheel package within the same model line, so year and make alone are not enough to choose correctly. Select your model below to narrow the fitment history and see the sizes that apply to your Lexus.
2018 Lexus Trucks GX460
The GX460 remained Lexus' rugged midsize luxury SUV, combining a traditional body-on-frame layout with the brand's upscale interior and long-distance comfort. Its tire fitment mounts on an 18-inch rim, which separates it clearly from the NX, RX, and LX wheel packages used elsewhere in the lineup.
The LX570 sat at the top of the Lexus utility range in 2018, blending full-size SUV presence with luxury-market refinement. It uses either 20-inch or 21-inch rims depending on wheel package, so confirming the wheel diameter is essential before moving to tire selection.
The NX300 was Lexus' compact luxury crossover, aimed at buyers who wanted a smaller footprint without giving up premium appointments. It appears with 17-inch and 18-inch rim fitments, including two different 18-inch size paths, so wheel and model confirmation matters more here than anywhere else in the range.
The NX300h brought hybrid efficiency to the same compact luxury crossover formula, with much of the same visual identity as the standard NX. Its tires mount on either 17-inch or 18-inch rims, but its fitment range is narrower than the non-hybrid NX300.
The RX350 continued as one of Lexus' signature luxury crossovers, known for quiet road manners and broad mainstream appeal. Its tires mount on either 18-inch or 20-inch rims, creating a straightforward two-size split tied to wheel package rather than to a different model family.
The RX350L extended the RX formula with added passenger and cargo versatility while keeping the same luxury-crossover character. It follows the RX family pattern with tire fitments that mount on 18-inch or 20-inch rims depending on the wheel setup.
The RX450h paired the RX platform with Lexus hybrid technology, giving buyers an electrified version of the brand's best-known crossover. It shares the same 18-inch and 20-inch tire mounting diameters used across the core RX family.
The RX450hL combined the longer-body RX format with hybrid power, aimed at buyers who wanted extra utility without leaving the Lexus luxury crossover segment. Like the other RX variants, it uses either 18-inch or 20-inch rim-based tire fitments depending on configuration.
One product is available across one of the eight tire sizes used on 2018 Lexus Trucks vehicles. The 225/65R17 size has one BFGoodrich radial option with an RBL sidewall. Confirm your exact size first, since most 2018 Lexus Trucks fitments use different wheel diameters and model-specific applications.
These FAQs sort out how tire sizes split across the 2018 Lexus Trucks range, what the metric size codes mean, how wheel diameter changes by model, and what to check for storage, road use, and longer trips in a modern luxury SUV or crossover.
Size Basics & Fitment
What tire sizes fit 2018 Lexus Trucks vehicles?
2018 Lexus Trucks vehicles use eight radial sizes across eight models: 265/60R18 for the GX460; 275/50R21 and 285/50R20 for the LX570; 225/60R18, 225/65R17, and 235/55R18 for the NX300; 225/60R18 and 225/65R17 for the NX300h; and 235/55R20 plus 235/65R18 for the RX350, RX350L, RX450h, and RX450hL. Those fitments span 17-, 18-, 20-, and 21-inch rim diameters, so there is no single interchangeable Lexus Trucks size for the year.
The practical takeaway is to identify the exact model first, then confirm the wheel diameter actually on the vehicle. Within some model lines, especially the NX, RX, and LX families, more than one factory-size path exists depending on wheel package. For the 225/65R17 size, the currently covered product fits rims from 6.0 to 8.0 inches wide. Once you have the right model-and-wheel combination, you can compare brand, tread style, and service description with much more confidence.
What does 225/65R17 mean on a 2018 Lexus Trucks tire?
On a 2018 Lexus Trucks tire, 225/65R17 means the tire is 225 millimeters wide, has a 65-series aspect ratio, uses radial construction, and mounts on a 17-inch wheel. That size appears on the NX300 and NX300h. In the current product coverage for that size, BFGoodrich offers an S speed rating, which carries a 112 mph ceiling, and the tire fits rim widths from 6.0 to 8.0 inches.
That code matters because each part of it affects fitment. The wheel diameter must match exactly, and the width/profile combination affects the overall proportions Lexus engineered into the crossover. If your NX300 or NX300h is on 17-inch wheels, 225/65R17 is the fitment family to follow. If the vehicle has 18-inch wheels instead, moving to a different metric code is necessary even when the model name stays the same.
Do all 2018 Lexus Trucks models use the same tire size?
No, 2018 Lexus Trucks models do not use the same tire size. The GX460 uses 265/60R18, the LX570 uses either 275/50R21 or 285/50R20, the NX300 uses three different sizes, the NX300h uses two, and the RX350, RX350L, RX450h, and RX450hL share two size options within the RX family. Every fitment in this year and make is radial, but the actual dimensions and wheel diameters vary considerably.
That means year and make alone are not enough to choose a tire. A 2018 Lexus Trucks owner should confirm the model badge and then verify the wheel diameter before comparing products. The LX570 is a good example: one version needs a 20-inch fitment and another needs a 21-inch fitment, and neither is interchangeable with the GX, NX, or RX families. Matching the model first prevents ordering a tire that is close in profile but wrong at the wheel.
Buying the Right Tire
What sidewall styles are available for 2018 Lexus Trucks tires?
Sidewall style coverage for 2018 Lexus Trucks is currently narrow in the product range shown here. The 225/65R17 fitment used on the NX300 and NX300h is available with an RBL sidewall, meaning raised black letters. That presentation leans more toward an all-terrain, utility-oriented appearance than toward the smooth sidewall look commonly associated with many luxury crossover touring tires.
Sidewall style matters mainly for appearance and how closely the tire matches the character you want from the vehicle. An NX used for light trail or winter-road duty may suit an RBL all-terrain look, while an owner restoring the original visual feel of a luxury crossover may prefer a more understated sidewall if that option exists in the exact size. Because sidewall treatment can differ even within the same numeric size, it is worth checking the tire's exact sidewall wording and tread personality before making a final choice.
What brands make tires for 2018 Lexus Trucks vehicles?
BFGoodrich currently covers the 225/65R17 fitment used on the 2018 Lexus Trucks NX300 and NX300h with its All-Terrain T/A KO2 series. That gives the 17-inch NX fitment a well-known light-truck-oriented option within the correct metric radial size. Other 2018 Lexus Trucks sizes on this page do not carry a brand-specific product summary here, so the NX 17-inch application is the clearest brand-and-series match in the range.
Brand choice should follow fitment, not the other way around. Start by confirming whether your Lexus is a GX, LX, NX, or RX model and then identify the wheel diameter before comparing brand character. In the BFGoodrich-covered NX size, the appeal is a more rugged all-terrain direction than a conventional highway touring tire. That may suit some owners well, but it is a very different use-case from the road-focused behavior many Lexus drivers expect.
What is the difference between the BFGoodrich All-Terrain T/A KO2 and a typical road-oriented tire for a 2018 Lexus Trucks NX300 or NX300h?
For the 2018 Lexus Trucks NX300 and NX300h, the BFGoodrich All-Terrain T/A KO2 in 225/65R17 is a radial tire with an RBL sidewall, a 107S service description, a 2,150-pound maximum load at 65 psi, and a 39-pound weight. That profile points to a more truck-flavored all-terrain construction than the quieter, smoother-sidewall touring tires many compact luxury crossovers use in everyday pavement duty.
The buying decision comes down to how the vehicle is driven. If your NX regularly sees rough roads, winter conditions, or a more utility-focused routine, the KO2's character may make sense within the correct size. If the vehicle is mostly a city-and-highway luxury crossover, many owners will want to compare the ride feel, noise expectations, and appearance of the tire carefully before choosing an all-terrain pattern simply because it matches the dimensions.
Fitting & Setup
What rim width do 2018 Lexus Trucks tires require?
Rim width guidance for 2018 Lexus Trucks is confirmed here for the 225/65R17 size used on the NX300 and NX300h. That fitment works with a 17-inch rim measuring 6.0 to 8.0 inches wide. The other Lexus Trucks sizes on this page span several wheel diameters, but a wheel-width figure should be verified on the exact tire you are considering rather than assumed from another size in the same model family.
Rim width matters because a tire can mount on the correct diameter wheel yet still be mismatched if the wheel is too narrow or too wide for the tire's approved range. The easiest path is to match the exact tire size to the wheel diameter already on the vehicle and then compare the tire maker's approved width range to the wheel itself. That extra check is especially worthwhile on used vehicles where wheels may have been changed after the original sale.
Do 2018 Lexus Trucks tires require inner tubes?
2018 Lexus Trucks fitments are modern radial metric sizes, and the 225/65R17 product covered here appears as a standard road-going radial without any tube-type marking. On vehicles of this era, tubeless radial fitments are the normal expectation unless a tire is explicitly marked otherwise. The key point is to verify the sidewall marking on the specific tire, especially if you are comparing specialized off-road or light-truck products.
Inner-tube questions usually matter more on antique, bias-ply, or specialty wheel applications than they do on late-model Lexus utility vehicles. Even so, sealing condition at the wheel, valve stem health, and the intended tire type still need attention during installation. If a wheel has corrosion, prior damage, or an uncertain service history, have the installer inspect it closely before mounting a fresh set. Good wheel condition is just as important to air retention as the tire itself.
Maintenance, Storage & Longevity
How should I store a 2018 Lexus Trucks when the tires are fitted?
A 2018 Lexus Trucks vehicle should be stored on clean, properly inflated tires in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, or other ozone-producing equipment. Modern radials tolerate storage better than old bias-ply designs, but they still age from heat, UV exposure, and long periods of standing in one spot. If the vehicle will sit for months, moving it periodically or placing it on stands can help reduce stress at one contact patch.
Storage habits directly affect how the tires feel and how long they remain serviceable. A Lexus crossover or SUV that sits with low pressure can develop temporary flat-spotting, and a garage with ozone sources can accelerate sidewall cracking over time. Before returning the vehicle to regular use, check inflation, inspect the tread and sidewalls, and drive gently at first to make sure the tires return to normal shape and behavior.
How long do tires on a 2018 Lexus Trucks typically last?
Tires on a 2018 Lexus Trucks vehicle should be judged by age as much as by tread depth. A sound rule for collector or low-mileage use is to begin close inspection around the five- to seven-year mark and to treat ten years as the point where replacement deserves serious consideration regardless of remaining tread. The DOT date code on the sidewall gives the week and year of manufacture, which is more useful than mileage alone for a vehicle that may not be driven daily.
Luxury SUVs and crossovers often accumulate fewer miles than their tread life would suggest, so owners can be misled into thinking a tire is still fresh simply because the grooves look deep. Rubber hardens with time, and age-related cracking or stiffness can change ride quality and wet-road behavior long before the tread is gone. If your 2018 Lexus Trucks vehicle is driven only occasionally, checking the manufacturing date may tell you more than the odometer does.
How often should tires on a 2018 Lexus Trucks be inspected?
Tires on a 2018 Lexus Trucks vehicle should be inspected before every drive and again before any extended highway outing. Look for sidewall cracking, cuts, bulges, uneven wear, embedded objects, and any loss of pressure from one trip to the next. On a vehicle that sees mixed weather or occasional rough-road use, also check the shoulders and tread voids for damage or lodged debris.
Frequent inspection catches problems early, which matters even on relatively modern Lexus models because age, potholes, curb impacts, and long storage periods can all affect tire condition. A quick walk-around is often enough to spot a developing issue before it becomes a roadside problem. If one tire wears differently from the others, treat that as a signal to inspect alignment, suspension condition, and inflation habits rather than simply replacing the tire and moving on.
Safety & Road Use
Are 2018 Lexus Trucks tires safe for highway driving?
Yes, 2018 Lexus Trucks tires in the metric radial sizes used here are intended for modern road use when they are in good condition, properly inflated, and matched to the correct model and wheel diameter. The 225/65R17 BFGoodrich option carries an S speed rating, which corresponds to 112 mph. That ceiling is well above normal U.S. highway speeds, so real-world safety usually depends more on tire age, inflation, tread condition, alignment, and the vehicle's overall mechanical health than on the rating alone.
Highway suitability should be judged as a system, not just by the size code. A properly maintained NX, RX, GX, or LX with fresh, correctly fitted tires will generally be limited more by road conditions, loading, and vehicle upkeep than by the tire's basic category. Before sustained highway use, make sure the tires match the wheel diameter exactly and that no sidewall damage or age cracking is present. Those checks matter more than chasing a larger or more aggressive-looking tire.
What inflation pressure should I use for 2018 Lexus Trucks tires?
Inflation pressure for a 2018 Lexus Trucks vehicle should follow the factory placard or owner's manual for the exact model and wheel package, because pressure can change with tire size, load range, and vehicle weight distribution. In the 225/65R17 BFGoodrich application, the tire's maximum load is 2,150 pounds at 65 psi, but that figure is a tire rating limit rather than a universal operating recommendation for every 2018 Lexus Trucks application.
The practical approach is to use the vehicle maker's recommended cold pressure for daily operation and compare it with the tire maker's sidewall information so the two are understood in context. Do not transfer a pressure number from an NX to an RX, GX, or LX simply because the vehicles come from the same brand family. If a tire has been changed to a more specialized all-terrain or light-truck construction, it is especially important to verify the correct operating pressure for that exact setup.
What should I check before taking a 2018 Lexus Trucks on a longer drive?
Before a longer drive in a 2018 Lexus Trucks vehicle, inspect every tire for cracking, cuts, bulges, punctures, and uneven wear, then confirm cold inflation pressure and make sure the tread depth is still suitable for the conditions ahead. Check the spare as well, since a compact or temporary spare that has been ignored for years may not be ready when needed. On SUVs and crossovers that may have seen curb strikes or rough roads, it also pays to look for wheel damage and vibration history.
Tire condition is only one part of preparing an older or heavily used luxury utility vehicle for distance travel, but it is one of the easiest to verify before departure. If the vehicle has been sitting, take a short local drive first and pay attention to pull, shake, or unusual noise. That quick test often reveals pressure loss, balance problems, or age-related tire stiffness before you are committed to a long highway run.
