In 2008, Lexus Trucks spanned several distinct luxury utility vehicles, from the body-on-frame GX470 and full-size LX570 to the crossover-focused RX350 and hybrid RX400h. That range matters because 2008 Lexus Trucks did not use one universal tire size across every model. Four tire sizes appear across four models, with the RX pair sharing two crossover sizes while the GX470 and LX570 each use their own fitment. The key first step is confirming exactly which model you have, then matching the correct rim diameter and tire size before narrowing your choice to a specific tread style or product.
Which Tire Size Is Right for Your 2008 Lexus Trucks
Four tire sizes are used across 2008 Lexus Trucks, and they vary by model rather than carrying across the whole lineup. Because these sizes mount on different rim diameters, the real decision starts with confirming your exact model and wheel size first, especially between the GX470, LX570, and the two RX models. Understanding that distinction before choosing a product saves time and helps ensure the right match.
Year(s): 2008|Fit(s): GX470|Construction: Radial|Rim: 17-in rim
The 265/65R17 is a metric radial size with a 265-millimeter section width, a 65-series aspect ratio, and fitment on a 17-inch wheel. This size is specific to the GX470 rather than universal across 2008 Lexus Trucks. It suits owners who want to stay with the GX470's proper fitment and then choose tread character based on how the vehicle is used, whether that means everyday road driving or a more rugged look.
Year(s): 2008|Fit(s): LX570|Construction: Radial|Rim: 20-in rim
The 285/50R20 is a metric radial size that uses a 285-millimeter section width, a 50-series aspect ratio, and a 20-inch wheel. This size is specific to the LX570 and does not interchange with the smaller-wheel fitments used elsewhere in the 2008 Lexus Trucks range. It is the size to focus on if you are matching the full-size stance and wheel package associated with the LX570.
Year(s): 2008|Fit(s): RX350, RX400h|Construction: Radial|Rim: 17 in
The 225/65R17 is a metric radial size with a 225-millimeter section width, a 65-series aspect ratio, and a 17-inch rim. BFGoodrich offers this size with an RBL sidewall, an S speed rating rated to 112 mph, and a 2,150-pound load capacity at 65 psi; its fitment details suit a 6.0- to 8.0-inch rim width range. Because this size is shared by the RX350 and RX400h, it is the right choice for owners staying with the 17-inch crossover fitment and wanting a clearly identified product option.
Year(s): 2008|Fit(s): RX350, RX400h|Construction: Radial|Rim: 18-in rim
The 235/55R18 is a metric radial size with a 235-millimeter section width, a 55-series aspect ratio, and fitment on an 18-inch wheel. This size is specific to the RX350 and RX400h among 2008 Lexus Trucks and represents the alternate RX wheel-and-tire package rather than a year-wide fitment. It is the size to confirm if your RX uses the larger 18-inch wheel setup.
Four models are covered under 2008 Lexus Trucks, and tire size varies by model. The GX470 and LX570 each use their own dedicated fitment, while the RX350 and RX400h share two crossover sizes depending on wheel package. Select a model below for model-specific fitment history and the tires that match it.
2008 Lexus Trucks GX470
The GX470 was Lexus' mid-size luxury SUV with body-on-frame underpinnings and a reputation for balancing comfort with genuine utility. Its tire fitment mounts on 17-inch wheels, which separates it from the larger LX570 and aligns it more closely with traditional SUV proportions than the RX crossovers.
The LX570 represented the full-size end of the Lexus utility lineup, emphasizing luxury, presence, and heavier-duty SUV architecture. Its tires mount on 20-inch wheels, giving it a distinct fitment path from the GX470 and both RX models.
The RX350 was Lexus' luxury crossover, aimed at buyers who wanted smoother on-road manners and easier daily use than a truck-based SUV. It can use either a 17-inch or 18-inch wheel-and-tire combination, so confirming the wheel on the vehicle is essential before choosing a tire.
The RX400h brought hybrid power to the Lexus crossover formula, blending luxury packaging with efficiency-minded engineering. Like the RX350, it uses either a 17-inch or 18-inch fitment depending on wheel package, so the exact size should be matched to the wheels currently on the vehicle.
One product is available across four tire sizes for 2008 Lexus Trucks vehicles. The 225/65R17 has one BFGoodrich radial option with an RBL sidewall, so confirming your exact size and wheel package is the first step before choosing a tire.
These answers cover how tire size changes across the 2008 Lexus Trucks lineup, what the RX models share, how the GX470 and LX570 differ, and what to check for fitment, road use, and long-term care.
Size Basics & Fitment
What tire sizes fit 2008 Lexus Trucks vehicles?
2008 Lexus Trucks vehicles use four sizes across the model range: 265/65R17 for the GX470, 285/50R20 for the LX570, and either 225/65R17 or 235/55R18 for the RX350 and RX400h. The GX470 and RX 17-inch fitments both mount on 17-inch wheels, but they are different sizes and should not be treated as interchangeable. The LX570 stands apart with a 20-inch fitment, while the RX models share two crossover sizes tied to different wheel packages.
That means year and make alone are not enough for 2008 Lexus Trucks. You need to identify the model first, then confirm whether the vehicle has 17-inch, 18-inch, or 20-inch wheels before narrowing your choice any further. If the vehicle has changed hands or has had wheel swaps over the years, checking the tire sidewall and wheel diameter directly is the quickest way to avoid ordering the wrong size.
What does 265/65R17 mean on a 2008 Lexus Trucks tire?
On a 2008 Lexus Trucks tire, 265/65R17 is a metric radial size. The 265 is the nominal section width in millimeters, 65 is the aspect ratio, R means radial construction, and 17 is the wheel diameter in inches. Within the 2008 Lexus Trucks range, this size belongs to the GX470 rather than to every model.
That decoding matters because it tells you both the tire's basic proportions and the wheel diameter it must fit. A 17-inch tire cannot be mounted on an 18-inch or 20-inch wheel, even if the vehicle is from the same year and make. GX470 owners should use the full size code as their reference point, not just the fact that the tire mounts on a 17-inch wheel.
Do all 2008 Lexus Trucks models use the same tire size?
No, 2008 Lexus Trucks models do not all use the same tire size. The GX470 uses 265/65R17, the LX570 uses 285/50R20, and the RX350 and RX400h use either 225/65R17 or 235/55R18. The only shared fitments within the lineup are the two RX models, which use the same pair of crossover sizes.
That split reflects the different roles of these vehicles. The GX470 and LX570 are larger SUVs with their own distinct wheel-and-tire packages, while the RX models were packaged more like luxury crossovers. If you are unsure whether you have an RX350 or RX400h, or whether your RX is on 17-inch or 18-inch wheels, verify the badge and the sidewall before choosing a tire.
Buying the Right Tire
What sidewall styles are available for 2008 Lexus Trucks tires?
A confirmed sidewall style appears in 225/65R17, where BFGoodrich offers an RBL sidewall. That means raised black lettering rather than a narrow whitewall or wide whitewall treatment. For 2008 Lexus Trucks, that style fits the modern SUV and crossover character of the period far more naturally than vintage sidewall treatments associated with earlier collector vehicles.
Sidewall appearance matters most when you want the tire to look right on the vehicle as well as fit correctly. An RBL tire gives the RX350 or RX400h a more assertive, utility-oriented look than a plain black sidewall would. If appearance is important, match sidewall style after you have confirmed the exact size, because the same styling treatment is not automatically available across every Lexus Trucks fitment.
What brands make tires for 2008 Lexus Trucks vehicles?
BFGoodrich is represented for 2008 Lexus Trucks through the 225/65R17 size used on the RX350 and RX400h. That tire appears in the All-Terrain T/A KO2 series, giving buyers one clearly defined brand-and-series combination within the confirmed product range for this year and make. No other brand appears across the available 2008 Lexus Trucks products here.
Brand matters partly for appearance and partly for the kind of driving personality a tire suggests. In this case, the BFGoodrich option brings a recognizable light-truck and SUV heritage to the RX 17-inch fitment. If you own a GX470, LX570, or an RX on 18-inch wheels, start by confirming the exact size first, since brand choice is always secondary to getting the fitment right.
How should I choose the right tire for 2008 Lexus Trucks vehicles if my model has more than one size?
For 2008 Lexus Trucks, the only models with more than one size path are the RX350 and RX400h. Those vehicles use either 225/65R17 or 235/55R18 depending on the wheel package, while the GX470 and LX570 each have one dedicated size. The right choice is not a matter of preference between two interchangeable tires; it is a matter of matching the size to the wheels actually on the vehicle.
A practical approach is to check the sidewall on the current tires and confirm the wheel diameter before comparing tread style, sidewall appearance, or brand. That is especially important on used RX models, where wheel changes are common enough to create confusion. Once the wheel size is confirmed, you can focus on the tire that suits how the vehicle is driven without second-guessing basic fitment.
Fitting & Setup
What rim width do 2008 Lexus Trucks tires require?
A confirmed rim width range appears for the 225/65R17 size used on the 2008 Lexus Trucks RX350 and RX400h. That tire fits a 6.0- to 8.0-inch rim width range and mounts on a 17-inch wheel. Other 2008 Lexus Trucks sizes here are identified by wheel diameter, but the same level of rim-width detail is not attached to them in the available product range.
Rim width matters because it affects how the tire sits on the wheel, which in turn influences shape, steering feel, and overall fitment. RX owners using 225/65R17 should confirm their wheel falls within that range before choosing a product. On GX470, LX570, and 18-inch RX fitments, checking the wheel's actual specifications is still wise whenever wheels may have been replaced or upgraded.
Do 2008 Lexus Trucks tires require inner tubes?
The confirmed 225/65R17 product for 2008 Lexus Trucks is a modern radial tire identified without a tube-type marking, which aligns with tubeless fitment. That makes sense for a 2008 luxury SUV and crossover application, where tubeless radial construction is the normal expectation. No tube-related variation appears within that confirmed size and product combination.
Even so, wheel condition still matters. If a vehicle has aftermarket wheels, repaired wheels, or damage around the bead seat, the issue is usually wheel integrity rather than whether the tire itself was designed for a tube. The safest course is to inspect the wheels carefully and match the tire to the wheel design that is actually on the vehicle.
Can the original 2008 Lexus Trucks wheels be used with all tire sizes?
No, the original 2008 Lexus Trucks wheels cannot be treated as universal across all four tire sizes. The GX470 uses a 17-inch fitment, the LX570 uses a 20-inch fitment, and the RX350 and RX400h use either 17-inch or 18-inch sizes depending on wheel package. Wheel diameter alone prevents these sizes from being freely swapped across the whole lineup.
That means original wheels should be matched to the model and the tire size intended for that model's wheel package. An RX on 17-inch wheels can only use the RX's 17-inch size, while an RX on 18-inch wheels needs the 18-inch size. Before reusing factory wheels from another Lexus Trucks model, confirm both the wheel diameter and the tire size the wheel was meant to carry.
Maintenance, Storage & Longevity
How should I store a 2008 Lexus Trucks when the tires are fitted?
A 2008 Lexus Trucks vehicle should be stored on clean, properly inflated tires in a cool, dry space away from direct sunlight, electric motors, welders, and other ozone-producing equipment. Modern radial tires generally tolerate storage better than older bias-ply designs, but they still age from heat, UV exposure, and long periods of inactivity. Rolling the vehicle slightly from time to time helps reduce temporary flat spotting.
Long-term storage works best when the vehicle is kept on a dry surface and the tires are protected from standing moisture and petroleum contamination. If the vehicle will sit for months, inspect the sidewalls before it goes into storage and again before it returns to service. Collectors who keep multiple vehicles often use tire cradles or occasional repositioning to reduce stress on one contact patch.
How long do tires on a 2008 Lexus Trucks typically last?
Tire life on a 2008 Lexus Trucks vehicle is better judged by age, condition, and storage history than by mileage alone. Many collector and low-use vehicles cover too few miles for tread wear to be the deciding factor, so a five- to seven-year evaluation window is a sensible habit, with replacement becoming a serious consideration as tires approach about ten years from the DOT date code. Cracking, hardening, and repeated air loss matter more than odometer readings in many cases.
A lightly driven Lexus SUV can look fine at a glance while still carrying tires that are past their safest service life. Check the DOT date code on each tire, not just the spare, and compare age with the vehicle's actual use pattern and storage environment. If the tires are original to a recently purchased vehicle, age should be one of the first things you verify before regular road use.
How often should tires on a 2008 Lexus Trucks be inspected?
Tires on a 2008 Lexus Trucks vehicle should be inspected before every drive and again before any longer highway outing. Look for visible cracking, punctures, bulges, uneven wear, embedded debris, and pressure loss, and make sure the tread is wearing evenly across the tire. A quick inspection also helps catch wheel damage or alignment issues before they become more expensive problems.
That habit matters even more on low-mileage SUVs and crossovers, because aging can advance while the vehicle is parked. Monthly pressure checks are a good baseline, but a visual walkaround before driving is still worth doing. Include the spare in your routine, since a neglected spare often turns an otherwise manageable roadside issue into a much bigger inconvenience.
Restoration & Authenticity
What tires were originally fitted to the 2008 Lexus Trucks GX470?
A 2008 Lexus Trucks GX470 belongs to an era when radial tires were standard equipment across the luxury SUV market, and its fitment uses the 265/65R17 size. That makes radial construction the correct starting point for an owner aiming to stay true to the vehicle's original tire type. If a buyer is researching exact factory-delivery details beyond size and construction, the best next step is to compare the door-jamb placard, owner's literature, and model-specific Lexus references.
Authenticity on a modern collector SUV is usually less about recreating an early-period tire technology and more about preserving the correct overall size, wheel diameter, and visual character. A tire that changes the stance too dramatically or uses a very different tread personality can alter the way the vehicle presents. For event-level originality, Lexus enthusiast groups and marque specialists can help confirm market-specific details.
Does correct tire fitment matter for showing a 2008 Lexus Trucks?
Yes, correct tire fitment matters when showing a 2008 Lexus Trucks, even though these are modern-era vehicles compared with traditional antique classes. Judges and knowledgeable enthusiasts tend to notice whether the size, wheel diameter, and overall look suit the model, especially on well-kept GX, LX, and RX examples. A visibly incorrect sidewall profile or mismatched wheel-and-tire combination can distract from an otherwise strong presentation.
For a 2008 vehicle, the standard is usually tasteful correctness rather than re-creating an obsolete construction type. Staying with the proper GX470, LX570, or RX wheel-package size keeps the proportions right and preserves the vehicle's intended appearance. If the event has strict authenticity rules, review its judging standards ahead of time, since some clubs are more particular than others about tire appearance and sizing details.
How important is it to keep the original wheel-and-tire package on a 2008 Lexus Trucks?
Keeping the original wheel-and-tire package on a 2008 Lexus Trucks is important when you want the vehicle to retain its intended stance, profile, and period-correct presentation. The distinction is especially clear across this lineup because the GX470, LX570, and RX models use different sizes and wheel diameters. Preserving the original package helps maintain the visual identity Lexus gave each model in 2008.
That does not mean every surviving vehicle still wears its factory wheels, particularly in the used luxury SUV market. It does mean owners should verify whether a previous wheel swap has changed the proper tire size before trying to return the vehicle to stock form. If originality matters, start with the wheel diameter on the vehicle and compare it to the fitment appropriate to that specific model.
Safety & Road Use
Are 2008 Lexus Trucks tires safe for highway driving?
2008 Lexus Trucks tires are intended for modern road use when they are the correct size, in sound condition, and inflated appropriately. The confirmed 225/65R17 option for the RX350 and RX400h carries an S speed rating, which corresponds to 112 mph, well above normal U.S. highway speeds. In practical terms, tire age, condition, alignment, and the overall mechanical state of the vehicle usually matter more than raw speed capability during ordinary highway driving.
A highway-ready tire still needs a highway-ready vehicle around it. On any 2008 Lexus Trucks model, that means checking tire pressure, tread condition, and sidewall health along with brakes, suspension, and steering before extended trips. If a vehicle has spent long stretches in storage, put condition ahead of appearance and make sure the tires are still suitable for sustained heat and speed.
What inflation pressure should I use for 2008 Lexus Trucks tires?
Inflation pressure for 2008 Lexus Trucks tires should follow the vehicle's factory recommendation for the exact model and size, using the door-jamb placard or owner's manual as the primary guide. A confirmed 225/65R17 tire for the RX350 and RX400h carries a maximum load of 2,150 pounds at 65 psi, but that figure is the tire's rated maximum and should not be treated as the everyday operating pressure for every application. Pressure targets are size- and vehicle-specific.
The practical takeaway is simple: do not transfer one pressure figure from the RX 17-inch tire to the GX470, LX570, or the RX 18-inch fitment. Start with the vehicle recommendation, then confirm the tire's own sidewall information and the manufacturer's guidance for that specific product. Pressure should always be checked cold, especially before longer drives or after the vehicle has been parked for extended periods.
What should I check before taking a 2008 Lexus Trucks on a longer drive?
Before taking a 2008 Lexus Trucks on a longer drive, inspect each tire for cracking, cuts, bulges, punctures, uneven wear, and proper cold inflation pressure. Check that the sidewall size matches the model and wheel package, and do not forget the spare. A longer trip is also the right time to look at valve stems, wheel condition, and whether the tires have been losing air between drives.
Tires are only one part of preparing an older luxury SUV or crossover for distance, but they are among the easiest components to inspect thoroughly before leaving home. Once the tires pass inspection, continue with a broader pre-drive check that includes fluids, brakes, battery condition, lights, and suspension feel. That routine is especially worthwhile if the vehicle is driven seasonally or has spent much of its life parked.