The 2017 Lexus Trucks LX570 blends full-size luxury with true body-on-frame SUV capability, making it a vehicle that has to balance refined road manners with the weight, ride height, and presence expected from a premium utility platform. Buyers looking at this exact model are usually less concerned with broad fitment theory and more concerned with matching the vehicle’s actual wheel setup. The 2017 Lexus Trucks LX570 uses radial tires in two primary sizes, 275/50R21 and 285/50R20, tied to different wheel diameters. That makes construction simple, but size selection, sidewall preference, and product choice still matter. Before choosing, confirm which wheels are on the vehicle and whether anything has been changed from stock-style fitment.
Which Tire Size Is Right for The 2017 Lexus Trucks LX570
The 2017 Lexus Trucks LX570 uses two primary tire sizes, and the first thing to confirm is wheel diameter. One fitment uses a 21-inch rim and the other uses a 20-inch rim, so selecting the right tire starts with identifying which wheels are actually on the vehicle. Since the Base sub-model can use either size, the real decision is not trim level alone but matching the tire to the existing wheel setup and intended use.
The 275/50R21 size reads as a 275-millimeter nominal section width, a 50-series aspect ratio, radial construction, and fitment on a 21-inch wheel. On the 2017 Lexus Trucks LX570, this is a modern radial size that suits the vehicle’s later-model luxury SUV character and larger-diameter wheel package. With an overall diameter of 31.83 inches and section width of 10.83 inches, it represents a distinct fitment rather than a variation of the 20-inch option. Choose this size only after confirming that the vehicle is equipped with 21-inch wheels and that the tire matches the intended ride, appearance, and clearance requirements.
The 285/50R20 size indicates a 285-millimeter nominal section width, a 50-series profile, radial construction, and a 20-inch rim. For the 2017 Lexus Trucks LX570, this is the alternate primary fitment tied to a different wheel diameter, so it should be treated as its own wheel-and-tire package rather than as a casual substitute for the 21-inch setup. Its stated overall diameter is 31.22 inches with an 11.22-inch section width, giving it a slightly different physical footprint. This size is the one to evaluate when the vehicle has 20-inch wheels or when verifying an existing LX570 wheel package.
Fitment is straightforward at the sub-model level because the covered LX570 Base configuration can use both primary tire sizes. The important check is not the sub-model name alone, but whether the vehicle is currently wearing 20-inch or 21-inch wheels before selecting a tire.
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2017 Lexus Trucks LX570 Base
The 2017 Lexus Trucks LX570 Base can use either 275/50R21 or 285/50R20 radial tires, depending on the wheel package on the vehicle. That means tire selection starts with confirming actual rim diameter, then comparing the available options within the matching size for road use, ride preference, and overall presentation.
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
Common questions for the 2017 Lexus Trucks LX570 usually center on choosing between the two primary tire sizes, confirming wheel diameter, and understanding how wheel changes or maintenance checks can affect safe, proper fitment.
Tire Size & Fitment
What tire size fits a 2017 Lexus Trucks LX570?
The 2017 Lexus Trucks LX570 uses two primary tire sizes: 275/50R21 and 285/50R20. Both are radial sizes, and each belongs to a different wheel diameter, so they are tied to different wheel-and-tire setups rather than being interchangeable versions of the same fitment.
The key step is confirming which wheels are actually on the vehicle before selecting a tire. A quick visual check of the sidewall or a direct measurement of wheel diameter will usually settle the question, and that matters even more if the LX570 has had wheel changes since new.
What size rim does a 2017 Lexus Trucks LX570 use?
A 2017 Lexus Trucks LX570 can use either a 21-inch rim with 275/50R21 tires or a 20-inch rim with 285/50R20 tires. Both fitments belong to the same model year and Base sub-model coverage, so rim diameter is the deciding factor when choosing between the two tire sizes.
Checking rim size first helps avoid ordering a tire that matches the model but not the wheel package on the vehicle. If the LX570 has aftermarket wheels, verify the actual diameter stamped on the wheel or printed on the current tire sidewall instead of relying on assumption.
Why does the 2017 Lexus Trucks LX570 have more than one tire size?
The 2017 Lexus Trucks LX570 has more than one tire size because it can be equipped with different wheel diameters. One setup uses 275/50R21 tires on 21-inch wheels, while the other uses 285/50R20 tires on 20-inch wheels, and both are radial fitments for this model.
That makes wheel confirmation more important than trim name alone when replacing tires. Even though both sizes belong to the same vehicle line, each must match the wheel actually installed, and any previous wheel swap should be checked before choosing a replacement tire.
Choosing the Right Tire
What should I consider when choosing a tire for a 2017 Lexus Trucks LX570?
Start with the correct primary size for the wheel package on the vehicle: 275/50R21 for a 21-inch rim or 285/50R20 for a 20-inch rim. Since both are radial fitments, the main decision is not construction type but matching the tire to the existing wheel diameter and the way the LX570 is driven.
Beyond basic size, compare overall dimensions, wheel compatibility, and the type of use the SUV sees most often. A vehicle used mainly for highway travel may call for different priorities than one that regularly carries passengers, cargo, or sees more demanding road conditions.
How do I choose between the available 2017 Lexus Trucks LX570 tire sizes?
Choosing between 275/50R21 and 285/50R20 is not a matter of preference alone, because each size belongs to a different rim diameter. The right choice is the size that matches the wheels currently on the 2017 Lexus Trucks LX570, whether that setup is 21-inch or 20-inch.
Once wheel diameter is confirmed, compare the physical dimensions of the correct size and make sure the tire suits the vehicle’s intended role. If the LX570 has been modified with non-original wheels or suspension changes, check clearance and wheel specifications before moving ahead.
What rim-fitment details should I compare when choosing 2017 Lexus Trucks LX570 tires?
Rim diameter is the first detail to compare on a 2017 Lexus Trucks LX570, because the two primary sizes fit different wheels. The 275/50R21 belongs on a 21-inch wheel, while the 285/50R20 belongs on a 20-inch wheel, and that difference drives the entire tire-selection process.
Wheel width and overall tire dimensions also deserve attention, especially on a heavy luxury SUV where clearance and load-carrying expectations matter. Any time the vehicle has aftermarket wheels, verify the full wheel specification instead of assuming the current tire size tells the whole story.
Restoration & Appearance
Does correct tire fitment matter for a 2017 Lexus Trucks LX570 restoration or preservation project?
Yes, correct tire fitment still matters on a 2017 Lexus Trucks LX570 even though it is a newer collector-era luxury SUV rather than a vintage restoration piece. Using the proper 275/50R21 or 285/50R20 size helps preserve the intended stance, wheel-to-tire relationship, and overall presentation of the vehicle.
Appearance is only one part of the equation, because the wrong size can also affect wheel compatibility and clearance. On a preservation-focused LX570, it is smart to confirm whether the current wheels match the original-style setup before replacing tires or trying to duplicate the vehicle’s existing look.
Which tire size best preserves the original look of a 2017 Lexus Trucks LX570?
The size that best preserves the original look of a 2017 Lexus Trucks LX570 is the one that matches the wheel package already fitted to the vehicle. That means 275/50R21 on a 21-inch setup or 285/50R20 on a 20-inch setup, since each creates a different visual relationship between tire sidewall and wheel diameter.
A preservation-minded owner should avoid choosing by model name alone and instead verify the actual wheels on the SUV. Matching the proper size to the existing rims keeps the proportions consistent and avoids introducing an appearance change that comes from using the wrong wheel-and-tire combination.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2017 Lexus Trucks LX570?
Yes, modifications can affect tire fitment on a 2017 Lexus Trucks LX570. Wheel changes, suspension alterations, ride-height adjustments, and body modifications can all influence whether 275/50R21 or 285/50R20 remains the right practical choice, even when those sizes are both correct primary fitments for the model.
A modified LX570 should be checked for actual wheel diameter, wheel width, and clearance at full steering lock and suspension movement. That extra verification matters because a tire can be correct for the model in general while still being unsuitable for a specific vehicle that has been altered.
What should I inspect before driving a 2017 Lexus Trucks LX570 on new tires?
Before driving a 2017 Lexus Trucks LX570 on new tires, inspect the wheel diameter, tire pressure, visible sidewall condition, tread seating, and overall clearance. It is also smart to confirm that all four tires match the intended size package, either 275/50R21 or 285/50R20, rather than mixing setups.
A short, careful road test can reveal vibration, rubbing, or steering issues before the vehicle goes back into regular use. On an SUV of this size and weight, checking for even mounting, proper inflation, and secure valve hardware helps prevent small installation issues from becoming larger road-use problems.
How often should tires on a 2017 Lexus Trucks LX570 be inspected?
Tires on a 2017 Lexus Trucks LX570 should be inspected regularly, especially before longer drives, after extended storage, and any time ride quality or steering feel changes. Even on a modern radial tire, age, air loss, irregular wear, cuts, bulges, and sidewall damage deserve routine attention.
Vehicles that see intermittent use can develop tire concerns without accumulating many miles, so visual checks matter just as much as mileage-based habits. A quick inspection of pressure, tread condition, and any sign of cracking helps catch problems early and keeps the LX570 ready for dependable road use.
