The 2022 Lexus Trucks RX350 sits in the modern luxury crossover space, blending everyday comfort with the polished road manners that have made the RX a longtime favorite for family use and premium commuting. For this exact model year, tire selection is driven by wheel setup more than by construction, because the RX350 uses radial tires in two different sizes: 235/65R18 and 235/55R20. That means the first step is confirming whether the vehicle is on its 18-inch or 20-inch wheel package, especially since certain sub-models use only the 20-inch fitment. Once that is settled, the focus shifts to choosing the right tire for ride, appearance, and overall fitment confidence.
Which Tire Size Is Right for The 2022 Lexus Trucks RX350
The 2022 Lexus Trucks RX350 uses two primary tire sizes, and the correct one depends on the wheel diameter and exact sub-model. Both are radial metric sizes, but one fits an 18-inch rim and the other fits a 20-inch rim, so confirming the vehicle's wheel setup is the first step before comparing tire options or replacing a full set.
Fit(s): Base, Black Line Special Edition, and F Sport
Construction: Radial|Rim: 20 in
In 235/55R20, the 235 identifies the tire's nominal section width in millimeters, 55 is the aspect ratio, R designates radial construction, and 20 is the rim diameter in inches. This size is part of the 2022 Lexus Trucks RX350 fitment range and is tied to the 20-inch wheel setup used on Black Line Special Edition and F Sport models, as well as some Base configurations. Its overall diameter stays close to the 18-inch fitment, so the main distinction is wheel package rather than a dramatic change in tire height. Buyers should confirm the actual wheels on the vehicle before selecting this size.
In 235/65R18, the 235 is the nominal section width in millimeters, 65 is the aspect ratio, R means radial construction, and 18 identifies the wheel diameter in inches. This size belongs to the 18-inch wheel configuration for the 2022 Lexus Trucks RX350 and appears on Base models equipped with that setup. With a section width matching the 20-inch fitment, the key difference is the taller sidewall paired with the smaller rim diameter. It is the right size to evaluate only after confirming that the RX350 is still using its 18-inch wheels and has not been changed to a different wheel package.
Sub-model fitment matters on the 2022 Lexus Trucks RX350 because not every version uses the same wheel and tire combination. The Base model can use either size, while the Black Line Special Edition and F Sport are tied to the 20-inch setup, so identifying the exact trim is an important first check.
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2022 Lexus Trucks RX350 Base
The 2022 Lexus Trucks RX350 Base can use either the 235/65R18 radial size or the 235/55R20 radial size, depending on how the vehicle was equipped. Tire selection for a Base model starts with confirming the actual wheel diameter on the vehicle, then matching the replacement tire to that setup.
2022 Lexus Trucks RX350 Black Line Special Edition
The 2022 Lexus Trucks RX350 Black Line Special Edition uses the 235/55R20 radial fitment with the 20-inch wheel package. That keeps the tire decision focused on selecting the right replacement within that size rather than sorting between multiple primary fitments.
The 2022 Lexus Trucks RX350 F Sport uses the 235/55R20 radial tire size on a 20-inch rim. For an F Sport, the practical step is verifying that the vehicle still has its 20-inch wheel setup before choosing a replacement tire in that same 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.
Frequently Asked Questions
These FAQs focus on the exact tire sizes used on the 2022 Lexus Trucks RX350, how fitment changes by sub-model and wheel diameter, and what to check before replacing tires on a luxury crossover that may have seen wheel or suspension changes.
Tire Size & Fitment
What tire size fits a 2022 Lexus Trucks RX350?
The 2022 Lexus Trucks RX350 uses two primary tire sizes: 235/65R18 and 235/55R20. Both are radial metric sizes, and the correct fitment depends on the vehicle's wheel package and sub-model. Base models can use either size, while the Black Line Special Edition and F Sport use 235/55R20.
The most important next step is checking the actual wheel diameter on the vehicle before ordering tires. An RX350 that has been fitted with different wheels after delivery may no longer match its original configuration, so the tire sidewall and wheel size should both be verified before replacement.
What size rim does a 2022 Lexus Trucks RX350 use?
The 2022 Lexus Trucks RX350 uses either an 18-inch rim or a 20-inch rim, depending on configuration. The 235/65R18 tire fits the 18-inch setup, and the 235/55R20 tire fits the 20-inch setup. Rim diameter is not interchangeable between those two tire sizes.
A quick visual check of the wheel may not be enough, especially if the vehicle has aftermarket wheels or replacement tires already installed. Confirm the wheel diameter stamped on the wheel or match it to the tire sidewall so the new tire size stays aligned with the actual rim.
Do all 2022 Lexus Trucks RX350 sub-models use the same tire size?
No, not all 2022 Lexus Trucks RX350 sub-models share the same tire fitment. The Base model can use either 235/65R18 or 235/55R20, while the Black Line Special Edition and F Sport use 235/55R20. That makes sub-model and wheel setup both important when replacing tires.
This matters because two RX350 vehicles from the same year can need different tire sizes even though they carry the same model name. Checking the trim alone is helpful, but confirming the wheel diameter on the vehicle is still the safest way to avoid ordering the wrong size.
Choosing the Right Tire
What should I consider when choosing a tire for a 2022 Lexus Trucks RX350?
Start with the correct primary size for the vehicle's actual wheel setup: 235/65R18 or 235/55R20. Both are radial metric sizes, so the main decision is not construction type but matching the tire to the proper rim diameter and sub-model configuration, especially on Base models that may use either size.
After confirming size, compare the tire's intended use with how the RX350 is driven. Daily commuting, highway travel, seasonal weather, and ride preference can all shape the final choice, while wheel changes, alignment condition, and any suspension modifications should be checked before settling on a replacement.
How do I choose between the available 2022 Lexus Trucks RX350 tire sizes?
The two sizes are not alternatives to pick by preference alone; they correspond to different wheel diameters. A 2022 Lexus Trucks RX350 on 18-inch wheels uses 235/65R18, while one on 20-inch wheels uses 235/55R20. The Base model may appear with either setup, but Black Line Special Edition and F Sport use 235/55R20.
The practical choice is made by the wheel already on the vehicle unless a complete wheel-and-tire conversion is being planned. In that case, overall fitment, wheel width, clearance, and the vehicle's current setup should all be reviewed before changing from one original size family to the other.
What rim-fitment details should I compare when choosing 2022 Lexus Trucks RX350 tires?
Rim diameter is the first detail to confirm on a 2022 Lexus Trucks RX350 because the vehicle uses both 18-inch and 20-inch fitments. The tire size must match that wheel diameter exactly, so 235/65R18 belongs on an 18-inch rim and 235/55R20 belongs on a 20-inch rim.
Wheel width and any offset changes also matter when the RX350 has been modified or fitted with aftermarket wheels. A tire can have the correct nominal size yet still create issues if the wheel specification or vehicle clearance has changed, so the full wheel setup should be checked before installation.
Restoration & Appearance
Does correct tire fitment matter for a 2022 Lexus Trucks RX350 restoration or refurbishment?
Yes, correct tire fitment still matters on a 2022 Lexus Trucks RX350 even though it is a modern luxury crossover rather than an older restoration vehicle. Using the proper 235/65R18 or 235/55R20 size keeps the vehicle aligned with its intended wheel package and preserves the overall stance and fitment balance.
A careful refurbishment benefits from checking what wheels are actually on the vehicle before replacing tires. If originality of presentation matters, the existing wheel design, trim level, and tire size should all be reviewed together so the finished vehicle retains a cohesive and appropriate appearance.
How does tire size affect the appearance of a 2022 Lexus Trucks RX350?
Tire size has a noticeable effect on the look of a 2022 Lexus Trucks RX350 because the vehicle uses two wheel-and-tire combinations with similar overall diameter but different sidewall proportions. The 235/65R18 setup carries more sidewall, while the 235/55R20 setup places more visual emphasis on the wheel.
That difference is one reason the correct size should match the vehicle's actual wheel package rather than be chosen for looks alone. An RX350 with non-original wheels, altered ride height, or mixed tire sizing can look out of proportion, so appearance and fitment should be considered together.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2022 Lexus Trucks RX350?
Yes, modifications can affect tire fitment on a 2022 Lexus Trucks RX350 even when the tire size appears close to an original specification. Aftermarket wheels, suspension changes, lowering, spacers, or body alterations can change how a 235/65R18 or 235/55R20 tire sits in relation to the fender, strut, and steering components.
A vehicle that has been changed from its original setup should be measured rather than assumed to match stock fitment. Tire replacement is a good time to inspect wheel width, offset, and clearance at full steering lock so the next set works with the RX350's current configuration.
What should I inspect before driving a 2022 Lexus Trucks RX350 on new tires?
Before road use, inspect tire pressure, wheel-nut torque, tread seating, and overall clearance on the 2022 Lexus Trucks RX350. A quick visual check should also cover sidewall condition, any contact marks around the wheel wells, and whether all four tires match the intended size for the wheel package on the vehicle.
It also helps to confirm alignment condition and look for uneven wear on the old tires, since new tires can quickly show problems that were already present. A short test drive with attention to steering feel, vibration, and rubbing can catch fitment issues before a longer trip.
How often should tires on a 2022 Lexus Trucks RX350 be inspected?
Tires on a 2022 Lexus Trucks RX350 should be inspected regularly, not only when tread looks low. Pressure, visible wear, cuts, punctures, bulges, and sidewall damage are worth checking often, especially on a vehicle that sees mixed highway and city driving or spends long periods parked between uses.
Routine inspections are particularly important after pothole impacts, curb contact, seasonal temperature swings, or wheel changes. A consistent habit of checking tire condition helps catch problems early and also confirms that the vehicle is still running the correct 235/65R18 or 235/55R20 size for its wheel setup.
