What is the final drive ratio of the GS 350?
The final-drive ratio for the Lexus GS 350 is typically around 3.72:1, with minor variations by year and drivetrain. For a precise figure, check the specific vehicle’s data plate or VIN.
Understanding the final-drive ratio helps explain how the engine’s power translates into wheel rotation. It’s the last gear ratio in the driveline, between the transmission and the wheels, and it affects engine RPM at highway speeds, acceleration feel, and overall efficiency. The GS 350, equipped with an 8-speed automatic transmission, uses this ratio to balance performance and fuel economy. While 3.72:1 is the common figure cited for many GS 350 configurations, exact numbers can vary by model year and whether the car is rear-wheel drive (RWD) or all-wheel drive (AWD). The following section outlines the typical values you’re likely to encounter.
GS 350 variants and typical final-drive figures
The figures below reflect common configurations reported in official spec sheets and automotive databases. Always confirm the exact ratio for a specific vehicle using its VIN or the data plate on the chassis.
- RWD GS 350 (model years around 2013–2020): final-drive ratio ≈ 3.72:1
- AWD GS 350 (model years around 2013–2020): final-drive ratio ≈ 3.72:1
Note: While 3.72:1 is the standard reference for many GS 350 cars, there may be rare or regional variations. If you need an exact figure for a particular car, verify against the vehicle’s official documentation or a certified dealership data sheet.
How to confirm your exact final-drive ratio
To determine the precise final-drive ratio for a specific GS 350, you can:
- Check the vehicle’s owner’s manual or service documentation, which may list drivetrain specifications.
- Inspect the VIN or build sheet; the final-drive ratio is sometimes included in the drivetrain section.
- Ask a Lexus dealer or reference the official Lexus service database, which can provide model-year specific figures.
In practice, most GS 350 owners will find a final-drive ratio of about 3.72:1, regardless of RWD or AWD, but verification is advised for exact numbers on a given vehicle.
Summary
For the Lexus GS 350, the commonly cited final-drive ratio is 3.72:1, with minor variations by year and drivetrain. If you need the exact value for a particular car, check the VIN data or contact a Lexus dealer to obtain the precise specification.
Additional context
Final-drive ratio is just one piece of the performance puzzle. It interacts with tire size, transmission gearing, and overall vehicle tuning. A ratio around 3.7:1 generally offers a balance between comfortable highway cruising and responsive acceleration in a luxury sedan like the GS 350.
Bottom line
Unless you have a rare regional variant, expect the GS 350’s final-drive ratio to be about 3.72:1. For certainty on a specific vehicle, verify via the VIN, data plate, or official Lexus documentation.
Further reading
If you’re researching performance specs for restoration, modification, or maintenance, consider consulting detailed service manuals or contacting a dealership for a model-year-specific confirmation.
What is the gear ratio of a TH350 transmission?
The standard gear ratios for a TH350 transmission are 2.52∶12.52 colon 12.52∶1 for first gear, 1.52∶11.52 colon 11.52∶1 for second gear, and 1.00∶11.00 colon 11.00∶1 for third gear. This is a three-speed automatic with no overdrive gear.
- 1st gear: 2.52∶12.52 colon 12.52∶1
- 2nd gear: 1.52∶11.52 colon 11.52∶1
- 3rd gear: 1.00∶11.00 colon 11.00∶1
What is the typical ratio for a final drive?
between 3:1 and 4.5:1
The purpose of the final drive gear assembly is to provide the final stage of gear reduction to decrease RPM and increase rotational torque. Typical final drive ratios can be between 3:1 and 4.5:1.
What is the most common problem with Lexus GS 350?
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 is the rear diff ratio of the IS350?
2006-2015 Lexus IS350 Rear Axle Differential Carrier 4.08 Ratio.
