The 2009 Lexus GS350 sits in the modern sport-luxury sedan category, blending Lexus refinement with a more assertive chassis and wheel-and-tire setup than a traditional comfort-focused four-door. On this model, tire selection is tied closely to drivetrain and wheel package, with radial fitments in 225/50R17 and 245/40R18 depending on configuration. That gives buyers a choice between a 17-inch fitment and a lower-profile 18-inch fitment, along with differences in available tire series, sidewall styling, and brand selection. For the right result, start by confirming whether the car is AWD or RWD and then match the tire to the actual wheel diameter already on the vehicle.
Which Tire Size Is Right for The 2009 Lexus GS350
The 2009 Lexus GS350 uses two primary tire sizes, and the right one depends on both sub-model and wheel diameter. AWD models use 225/50R17, while RWD models can use 225/50R17 or 245/40R18, so identifying the drivetrain and confirming whether the car has 17-inch or 18-inch wheels should come before comparing tire options. Once that is settled, the real choice becomes tread style, brand, sidewall treatment, and intended road use within the correct radial size.
225/50R17 is a metric radial size in which 225 identifies the nominal section width in millimeters, 50 is the aspect ratio, R denotes radial construction, and 17 is the rim diameter in inches. On the 2009 Lexus GS350, this size suits the 17-inch wheel fitment and keeps the selection in modern radial construction. Available choices include BFGoodrich and Nitto blackwall tires across series such as g-Force Comp 2 AS, g-Force Sport Comp 2, and NT555 G2. This size is the place to start when the car has 17-inch wheels and you want to compare touring-versus-sport-oriented product character within the proper fitment.
245/40R18 is a metric radial size where 245 is the nominal section width in millimeters, 40 is the aspect ratio, R marks radial construction, and 18 indicates the wheel diameter in inches. On the 2009 Lexus GS350, this size applies to the 18-inch fitment used on RWD configurations, giving the car a lower-profile tire package. Product choices broaden here, with BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac options, including blackwall, redline, and raised white letter sidewall treatments. This size deserves a closer look when the car already wears 18-inch wheels and appearance or use matters as much as basic fitment.
Sub-model fitment matters on the 2009 Lexus GS350 because tire size changes with drivetrain and wheel package. AWD fitment is straightforward, while RWD cars require a closer check of the wheel diameter already on the vehicle before selecting tires.
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2009 Lexus GS350 (AWD)
The 2009 Lexus GS350 AWD uses the 225/50R17 radial size, making the fitment path more straightforward than the RWD version. Tire selection then comes down to choosing among the available blackwall performance-oriented options while keeping the 17-inch wheel setup in mind.
The 2009 Lexus GS350 RWD can use either a 17-inch or 18-inch tire fitment, so wheel diameter needs to be confirmed before anything else. Once that is settled, the choice becomes whether to stay with the existing package and then compare available brands, series, and sidewall styles in the correct 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.
Best 2009 Lexus GS350 Tires for Sale
Available 2009 Lexus GS350 tire choices center on modern radial options from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Depending on size, buyers can compare blackwall, redline, and raised white letter styles along with series differences that range from all-season and sport street use to drag-oriented applications.
Common 2009 Lexus GS350 tire questions usually come down to the correct size by drivetrain, 17-inch versus 18-inch wheel fitment, available radial choices, appearance differences in sidewall styling, and the basic checks worth making before road use.
Tire Size & Fitment
What tire size fits a 2009 Lexus GS350?
The 2009 Lexus GS350 uses two primary tire sizes: 225/50R17 and 245/40R18. AWD models use 225/50R17, while RWD models can use either 225/50R17 or 245/40R18 depending on the wheel package installed on the car.
That means the first step is not choosing a brand or tread style but confirming whether the car is AWD or RWD and checking the actual wheel diameter. A GS350 that has been fitted with different wheels over time may no longer match its original setup, so measuring the wheel and verifying the current configuration prevents ordering the wrong size.
What size rim does a 2009 Lexus GS350 use?
The 2009 Lexus GS350 uses either a 17-inch or 18-inch rim, depending on the tire size and configuration. The 225/50R17 fitment uses a 17-inch rim, while the 245/40R18 fitment uses an 18-inch rim.
Wheel diameter is the non-negotiable part of tire fitment, so a 17-inch tire cannot be mounted on an 18-inch wheel, and the reverse is also true. Before comparing products, look at the tire sidewall already on the car or measure the wheel directly. That is especially important on RWD cars, where both 17-inch and 18-inch fitments appear.
Do all 2009 Lexus GS350 sub-models use the same tire size?
No. The 2009 Lexus GS350 AWD uses 225/50R17, while the 2009 Lexus GS350 RWD can use 225/50R17 or 245/40R18. The drivetrain split is what makes the fitment question more involved on this model.
That difference matters because it affects both tire size and wheel diameter, which then changes the products you can compare. On an AWD car, the path is simpler because the 17-inch fitment is fixed. On an RWD car, the correct approach is to confirm what wheels are currently installed and then select a tire only from the matching size group.
Choosing the Right Tire
What should I consider when choosing a 225/50R17 tire for a 2009 Lexus GS350?
For a 2009 Lexus GS350 using 225/50R17, start with correct size, 17-inch wheel compatibility, and radial construction. Available choices in this size include BFGoodrich and Nitto blackwall tires, with series options such as g-Force Comp 2 AS, g-Force Sport Comp 2, and NT555 G2.
After confirming fitment, compare the tire’s intended character and wheel-width compatibility rather than treating every 225/50R17 the same. Some buyers will prefer an all-season street-oriented option, while others may want a more aggressive sport-focused selection. It also helps to consider load information, tire weight, and how the car is actually driven before narrowing the choice.
What sidewall styles are available for 2009 Lexus GS350 tires?
Sidewall style depends on the tire size selected. The 225/50R17 options are blackwall, while the 245/40R18 fitment adds more appearance variety with blackwall, redline, and RWL, or raised white letter, choices.
That makes the 18-inch fitment more flexible for buyers who want the tire to change the car’s visual presentation as well as its size. A blackwall keeps a more restrained modern look, while redline or raised white letter sidewalls add a stronger visual accent. Sidewall style should still come after confirming the correct wheel diameter and size for the car.
What brands offer tires for the 2009 Lexus GS350?
The 2009 Lexus GS350 tire selections include BFGoodrich and Nitto in 225/50R17, while 245/40R18 adds BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Brand choice varies by size, so the available lineup depends on which wheel package the car uses.
The practical takeaway is that brand comparison only makes sense after the fitment has been narrowed to the correct size. Once that is done, look at the tire series, sidewall style, rim-width specification, and intended use within that brand’s offering. That approach is more useful than choosing a brand first and trying to force it into the wrong fitment.
Restoration & Appearance
Which tire should I choose for a period-style 2009 Lexus GS350?
A period-style approach for a 2009 Lexus GS350 starts with keeping the correct size and wheel diameter already associated with the car’s configuration. From there, the visual character depends on the specific tire line, with blackwall choices in both sizes and more appearance-driven 245/40R18 options available for some RWD applications.
Since this is a modern luxury sport sedan rather than an earlier collector car with bias-ply concerns, the appearance decision is mostly about preserving the car’s original-era stance and overall look. Staying with the proper size matters more than chasing a dramatic style change, and any deviation in wheel package should be checked carefully against clearance and overall presentation.
How does tire construction affect the appearance of a restored 2009 Lexus GS350?
On the 2009 Lexus GS350, the primary fitments are radial, so construction changes are not a bias-ply-versus-radial issue as they would be on an older collector vehicle. The appearance difference here comes more from sidewall style, tread character, and the visual effect of a 17-inch versus 18-inch wheel-and-tire package.
That means a restoration-minded owner should focus on matching the car’s original-era look through the correct size and wheel diameter first. A blackwall tire keeps a cleaner contemporary presentation, while redline or raised white letter options on 245/40R18 create a more customized look. For a stock-appearing car, the least disruptive choice is usually the most size-appropriate one.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 Lexus GS350?
Yes. Wheel changes, suspension lowering, altered offsets, and other modifications can affect tire fitment on a 2009 Lexus GS350 even when the tire size itself looks close on paper. That matters most on RWD cars, where both 17-inch and 18-inch fitments may already be in play.
A modified car should be checked for actual wheel diameter, wheel width, and clearance at the fender, suspension, and steering range before a tire is selected. Even with a correct nominal size, an aftermarket setup can shift how the tire sits in the wheelwell. Confirming the car’s current hardware prevents size assumptions based only on model year.
What should I inspect before driving a 2009 Lexus GS350 on new tires?
Before driving a 2009 Lexus GS350 on new tires, inspect wheel condition, verify that the tire size matches the wheel diameter, and confirm proper inflation. It is also worth checking for obvious alignment issues, uneven wear on the old tires, and any suspension problems that could affect how the new tires behave.
A short initial road test should include listening for rubbing, feeling for vibration, and making sure the steering tracks normally. Recheck pressure after installation and keep an eye on air loss during the first several days. On a car that has seen wheel swaps or curb impacts, a careful visual check can catch problems before they shorten tire life.
How often should tires on a 2009 Lexus GS350 be inspected?
Tires on a 2009 Lexus GS350 should be inspected regularly, not just when tread appears low. A quick visual check for cracking, cuts, punctures, bulges, uneven wear, and low pressure is a good habit before routine driving, with a closer inspection at service intervals or before longer trips.
Cars that spend long periods parked deserve extra attention because age and storage conditions can matter as much as mileage. Pressure should be monitored consistently, and any vibration, pull, or visible shoulder wear should be addressed early. Regular inspection is especially helpful on a GS350 because the model can carry either 17-inch or 18-inch setups with different tire choices.
