The 2011 Lexus Trucks RX350 sits in the luxury crossover era when comfort, quiet road manners, and everyday versatility mattered as much as style. Buyers looking at this generation usually want to preserve that composed, refined character while making sure replacement tires match the vehicle’s wheel setup. For this exact RX350, the primary fitment question centers on two radial tire sizes, 235/55R19 and 235/60R18, tied to different 19-inch and 18-inch wheel diameters. That means the choice starts with confirming which wheels are on the vehicle, then comparing tire options within the correct size. For a stock or restored appearance, staying close to the intended overall proportions is especially important.
Which Tire Size Is Right for The 2011 Lexus Trucks RX350
The 2011 Lexus Trucks RX350 uses two primary tire sizes, and the correct one depends first on wheel diameter. Both are radial metric sizes, but one fits an 18-inch rim and the other fits a 19-inch rim, so confirming the actual wheel setup is the first step before comparing tire options for ride, appearance, and road use.
235/55R19 is a metric radial size in which 235 identifies nominal section width in millimeters, 55 is the aspect ratio, R indicates radial construction, and 19 is the rim diameter in inches. On the 2011 Lexus Trucks RX350, this size belongs to vehicles equipped with 19-inch wheels rather than the 18-inch setup. Its overall proportions stay very close to the alternate RX350 fitment, so the real distinction is wheel diameter, not a dramatic size change. Choose this size only after confirming the vehicle is actually wearing the 19-inch wheel package.
235/60R18 is also a metric radial size, with 235 denoting nominal section width in millimeters, 60 identifying the aspect ratio, R marking radial construction, and 18 showing the rim diameter in inches. For the 2011 Lexus Trucks RX350, this size is used on the 18-inch wheel configuration. It carries nearly the same overall diameter as the 19-inch fitment, but it is not interchangeable unless the wheel diameter matches. This is the correct direction to evaluate if the RX350 currently has 18-inch wheels and a stock-style tire profile is the goal.
Sub-model fitment is straightforward here because the 2011 Lexus Trucks RX350 Base can use either of the two primary tire sizes. The important check is not trim level so much as the actual wheel diameter on the vehicle, since the RX350 was fitted with both 18-inch and 19-inch radial tire setups.
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2011 Lexus Trucks RX350 Base
The 2011 Lexus Trucks RX350 Base uses either 235/55R19 or 235/60R18, both in radial construction. Tire selection starts with confirming whether the vehicle has 19-inch or 18-inch wheels, then choosing a replacement that maintains the intended proportions and clearance.
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
Owners of a 2011 Lexus Trucks RX350 usually need clarity on the two correct tire sizes, the difference between the 18-inch and 19-inch wheel setups, and what to inspect before choosing replacements for regular road use.
Tire Size & Fitment
What tire size fits a 2011 Lexus Trucks RX350?
The 2011 Lexus Trucks RX350 uses two primary tire sizes: 235/55R19 and 235/60R18. Both are radial metric sizes, and each one belongs to a different wheel diameter, so the correct choice depends on whether the vehicle has 19-inch or 18-inch wheels.
The key step is checking the actual wheel and current tire size on the vehicle before ordering replacements. Even though these two sizes are very close in overall diameter, they are matched to different rims, so selecting by model name alone is not enough when the RX350 could have either factory-style wheel setup.
What size rim does a 2011 Lexus Trucks RX350 use?
A 2011 Lexus Trucks RX350 uses either an 18-inch or 19-inch rim, depending on which tire size is on the vehicle. The 235/60R18 tire mounts on an 18-inch rim, while the 235/55R19 tire mounts on a 19-inch rim.
Wheel diameter should be confirmed before anything else because the tire bead must match the rim exactly. Looking at the sidewall of the current tire is often the quickest check, and it is also smart to confirm that the wheels are the ones actually on the vehicle now, especially if it has ever had replacements or upgrades.
Why does the 2011 Lexus Trucks RX350 have more than one tire size?
The 2011 Lexus Trucks RX350 has more than one tire size because it was fitted with two wheel diameters. One setup uses 235/60R18 on an 18-inch rim, and the other uses 235/55R19 on a 19-inch rim, both in radial construction.
That means the buyer decision is really about identifying the wheel package already on the vehicle, not choosing between unrelated tire sizes. Since both sizes are close in overall proportions, the practical difference is the rim they fit, along with the ride and appearance that come with an 18-inch versus 19-inch wheel and tire combination.
Choosing the Right Tire
What should I consider when choosing a 235/55R19 tire for a 2011 Lexus Trucks RX350?
Start by confirming that the RX350 actually has 19-inch wheels, because 235/55R19 is tied specifically to that rim diameter. From there, the main considerations are staying with the correct size, keeping the intended overall proportions, and choosing a tire suited to how the vehicle is driven.
A luxury crossover like the RX350 benefits from a tire that supports composed road manners and predictable everyday use. It also helps to inspect the current wheel condition, compare the replacement tire’s basic dimensions to the existing setup, and make sure any prior wheel changes have not altered the vehicle from its original 19-inch fitment.
What should I consider when choosing a 235/60R18 tire for a 2011 Lexus Trucks RX350?
A 235/60R18 tire belongs on a 2011 Lexus Trucks RX350 with 18-inch wheels, so wheel confirmation is the first step. After that, focus on maintaining the correct size and selecting a tire that matches the vehicle’s intended balance of comfort, everyday road use, and proper clearance.
Because this size is close in overall diameter to the 19-inch fitment, buyers sometimes assume the two are freely interchangeable, but the rim diameter still has to match. Checking the current sidewall markings, measuring wheel diameter if needed, and confirming there are no aftermarket wheel changes will prevent a simple sizing mistake.
How do I choose between the available tire sizes for a 2011 Lexus Trucks RX350?
You do not choose between 235/55R19 and 235/60R18 based on preference alone. The correct tire size for a 2011 Lexus Trucks RX350 is determined by the wheel diameter already on the vehicle, with 19-inch wheels using 235/55R19 and 18-inch wheels using 235/60R18.
Once the wheel size is confirmed, then the decision becomes which replacement tire best suits the vehicle’s use and condition. It is worth checking all four wheels, reading the current tire sidewalls, and making sure a previous owner did not change wheel packages, since a crossover this age may no longer be wearing its original setup.
Restoration & Appearance
Which tire should I choose for a period-style 2011 Lexus Trucks RX350?
For a period-style 2011 Lexus Trucks RX350, the right starting point is the tire size that matches the wheel diameter currently on the vehicle: 235/60R18 for 18-inch wheels or 235/55R19 for 19-inch wheels. Keeping the correct size preserves the intended stance and visual proportions more effectively than improvising with a near match.
Appearance on a newer luxury crossover depends less on vintage sidewall treatment and more on maintaining the proper relationship between wheel and tire. A stock-style presentation usually means avoiding unnecessary size changes, confirming the wheels are the intended diameter, and choosing a replacement that does not alter the RX350’s overall visual balance.
Does correct tire fitment matter for a 2011 Lexus Trucks RX350 restoration?
Correct tire fitment matters on a 2011 Lexus Trucks RX350 because the vehicle was built around specific wheel and tire proportions. Using the proper 235/55R19 or 235/60R18 size helps preserve the original visual stance and avoids creating an obviously mismatched wheel-and-tire combination.
It also affects practical details such as wheel compatibility and clearance, especially if the vehicle has gone through multiple owners. Anyone aiming for an authentic presentation should verify the actual wheel diameter first, then use that size as the foundation before looking into cosmetic or brand preferences that support a clean, period-appropriate result.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2011 Lexus Trucks RX350?
Yes, modifications can affect tire fitment on a 2011 Lexus Trucks RX350. Wheel changes, altered suspension height, non-stock offsets, or body modifications can all change the space available for a 235/55R19 or 235/60R18 tire, even when the size itself is one of the standard RX350 fitments.
That is why the current setup should be checked as a whole instead of relying only on year and model. Looking at wheel diameter, wheel width, clearance at full steering lock, and the condition of suspension components can help confirm whether the vehicle still suits its original-size tire or now needs closer fitment review.
What should I inspect before driving a 2011 Lexus Trucks RX350 on new tires?
Before driving a 2011 Lexus Trucks RX350 on new tires, inspect the wheels for damage, make sure the tire size matches the wheel diameter, and verify that inflation is set correctly for the installed tires. It is also smart to check for obvious clearance issues around the fenders, struts, and steering components.
A careful walkaround after installation can catch problems early, especially on a vehicle that may have seen wheel changes over time. Recheck pressure after the first few drives, listen for rubbing during turns, and pay attention to any pull or vibration that could suggest alignment, balancing, or suspension issues unrelated to the tire itself.
How often should tires on a 2011 Lexus Trucks RX350 be inspected?
Tires on a 2011 Lexus Trucks RX350 should be inspected regularly, not just when replacement time arrives. Routine checks should include tread condition, sidewall cracking, cuts, bulges, and signs of air loss, whether the vehicle is driven daily or only used occasionally.
Regular inspection matters even more on an older crossover that may spend time parked, because age and storage conditions can affect tires long before tread is worn out. Pressure checks, visual condition checks, and occasional confirmation that all four tires still match the intended 18-inch or 19-inch setup can prevent avoidable road-use problems.
