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What size tires are on a 2015 Lexus GS350 AWD?

The 2015 Lexus GS350 AWD typically wears 235/45R18 tires on 18-inch wheels; if the car is equipped with optional 19-inch wheels, the sizes are 235/40R19 in the front and 265/35R19 in the rear.


In more detail, tire sizes for the GS350 AWD depend on the wheel package and trim level. This article outlines the standard factory sizes you are likely to encounter and how to verify the exact specification on your vehicle.


Overview of tire sizes by wheel option


Below are the common factory tire sizes associated with the 2015 GS350 AWD, depending on whether the car has 18-inch or 19-inch wheels.



  • 18-inch wheels: 235/45R18 all around

  • 19-inch wheels (optional on some trims): Front 235/40R19, Rear 265/35R19


The listed sizes reflect typical factory configurations. Always confirm the exact size on your specific vehicle using the door placard or the owner's manual, as regional or dealer-specific variations can occur.


Verifying the correct tire size on your vehicle


To confirm the tire size, check the sidewall of the tire for the size code, or reference the tire placard on the driver's door jamb. The placard shows the recommended sizes for front and rear wheels and is the best source for exact specifications on your car. When replacing tires on an AWD GS350, try to match the original size and specifications to maintain balanced handling and performance.


Additional considerations for replacements


If you are upgrading to larger wheels or choosing different tires, keep in mind that changes can affect speedometer accuracy, ride quality, and traction control calibration. For AWD models, it is generally advisable to keep all four tires at the same size, tapering to the factory dimensions unless you are prepared for potential handling changes and calibration needs.


Summary


For the 2015 Lexus GS350 AWD, the standard factory tire size is 235/45R18 on 18-inch wheels. If your vehicle has optional 19-inch wheels, the sizes are 235/40R19 (front) and 265/35R19 (rear). Always verify the exact sizes on your car using the door placard or owner's manual, and strive to maintain uniform tire sizes across all wheels on AWD configurations to preserve performance and safety.

What are the best tires for a Lexus GS350?


Fortunately, SimpleScore is here to help.

  • Continental ExtremeContact DWS06 Plus - Best All-Season tire. The easiest way to ensure maximum comfort in a sedan like the GS350 is to install the best all-season tires.
  • Bridgestone Potenza S001 - Best Summer tire.
  • Pirelli Winter Sottozero 3 - Best Winter tire.



What size tires are on a Lexus GS350?


The Lexus GS350 tire size varies by model year and trim, but common sizes include 225/50R17, 235/45R18, 235/40R19, and 265/35R19 (for the rear of some F Sport models). To confirm the exact size for your vehicle, check the sticker on the driver's side door jamb or the sidewall of your current tires. 
Common GS350 tire sizes by year/trim

  • 2009-2014 GS350:
    • AWD: 225/50R17 
    • RWD: 225/50R17 or 245/40R18 
  • 2015 GS350:
    • AWD: 225/50R17 or 235/45R18 
    • F Sport RWD: 265/35R19 (rear) 
  • 2018-2020 GS350:
    • Standard: 235/45R18 
    • F Sport AWD: 235/40R19 
    • F Sport RWD: 235/40R19 (front) and 265/35R19 (rear) 

How to find your exact tire size
  • Check the driver's side door jamb: There is a sticker that lists the original equipment (OE) tire size and recommended air pressure for your specific vehicle. 
  • Look at the sidewall of a current tire: The size will be listed in a series of numbers and letters, for example, P225/50R17. 



What is the most common problem with Lexus GS350?


Top Lexus GS350 Problems

  • Brief Rattle or Knocking Noise on Initial Start Up.
  • The Inside Rear View Mirror May Become Discolored.
  • Software Upgrade for Navigation & Heater Control Displays.
  • Lexus GS350 sputtering issue with check engine light and traction control warning.



What tires are on a 2015 Lexus GS350?


The Lexus GS350 can come with 225/50R17 tires, 235/45R18 tires, 245/40R18 tires, 235/40R19 tires, or 245/35R19 tires.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.