What is the steering rack ratio for the STI?
The steering rack ratio of the Subaru STI, a high-performance sports car, is a crucial aspect of its handling and responsiveness. The steering rack ratio refers to the relationship between the number of turns of the steering wheel and the resulting angle of the front wheels. In this article, we'll delve into the details of the STI's steering rack ratio and its significance.
What is the Steering Rack Ratio?
The steering rack ratio is a measure of the steering system's mechanical advantage. It determines how much the front wheels turn in relation to the amount of rotation of the steering wheel. A lower steering rack ratio, such as 12:1, means that the front wheels turn more for a given amount of steering wheel rotation, resulting in a more responsive and agile steering feel. Conversely, a higher steering rack ratio, such as 16:1, requires more steering wheel rotation to achieve the same amount of wheel turn, providing a more relaxed and stable steering feel.
The Steering Rack Ratio of the Subaru STI
The Subaru STI, known for its exceptional handling and performance, has a steering rack ratio of 14.3:1. This means that for every 14.3 degrees of steering wheel rotation, the front wheels will turn 1 degree. This ratio is designed to provide a balance between responsiveness and stability, allowing the driver to make precise and confident steering inputs while maintaining control at high speeds.
Factors Influencing the Steering Rack Ratio
The steering rack ratio of a vehicle is determined by the manufacturer based on several factors, including the intended use of the vehicle, the weight distribution, and the overall driving dynamics. For a high-performance sports car like the Subaru STI, the steering rack ratio is optimized to deliver a more engaging and responsive driving experience, which is essential for enthusiasts and track-day drivers.
Customizing the Steering Rack Ratio
While the factory-installed steering rack ratio of the Subaru STI is well-suited for most driving conditions, some owners may choose to modify the ratio to suit their personal preferences or driving style. This can be achieved through the installation of aftermarket steering components, such as a shorter steering rack or a different steering ratio gear. However, it's important to note that any modifications to the steering system should be performed by a qualified professional to ensure the safety and reliability of the vehicle.
Conclusion
The steering rack ratio of the Subaru STI is a crucial aspect of its handling and performance. The factory-installed ratio of 14.3:1 provides a balance between responsiveness and stability, making the STI an engaging and capable sports car. Understanding the significance of the steering rack ratio can help owners and enthusiasts appreciate the engineering that goes into the design of high-performance vehicles like the Subaru STI.
What does 16:1 steering ratio mean?
Steer ratio is the relationship between steer rotation and wheels rotation. IE. 16:1 means that for every 16 degrees at the steer you will have 1 degree at the wheels (tyres)... thus 90degrees of steer will generate 5.6 degrees at the wheels.
What is the steering rack ratio for a 2011 STI?
Sti was 15:1 and the newest is 13:1.
What is the steering ratio of the WRX STI?
1) All U.S. Impreza RSs and WRXs have the same 16.5:1 ratio steering. This equates to 3.2 turns on the RS and 3.0 turns on the WRX, probably due to clearance issues. 2) Worldwide WRXs and U.K. Impreza turbos had/have a 15:1 ratio steering. This equates to 2.7 turns on the old body and and 2.5 turns on the new body.
What is the ratio of a 15 STI steering rack?
The '15+ STI rack has a quicker ratio (13:1, ~2.4 turns lock-to-lock) as compared to the BP/BL LGT/Spec.
What ratio is best for racing?
To find the ideal selection, multiply the final drive ratio by the redline speed in fourth gear (152 mph) and divide that by the top track speed (140 mph). This would yield a theoretical 3.33—which is close enough to the nearest available final drive ratio of 3.36:1.
What is the steering rack ratio for a Subaru?
The 2015-2021 STI has the quickest steering ratio of any Subaru product to date -- it's 13:1 compared to 15:1 on older WRX and STI models. This rack will bolt directly in to any 2008-2014 WRX or STI. (On narrow-body 2008-2010 WRX models, you will have to shorten the tie rod ends.
What is the best steering ratio?
Typical automotive steering ratios range from about 24:1 with manual steering to about 14:1 with power steering assist. The higher the steering ratio, the easier it is to turn the wheel and steer the vehicle. The lower the ratio is, the more effort is needed at the steering wheel.
What is the ratio of steering racks?
A steering ratio of x:y means that a turn of the steering wheel x degree(s) causes the wheel(s) to turn y degree(s). In most passenger cars, the ratio is between 12:1 and 20:1.
What is the final drive ratio of a 04 STI?
| Drivetrain | |
|---|---|
| Gearbox | Longitudinally Mounted |
| 6 | 0.756 |
| Reverse | - |
| Final Drive | 3.9 |
What is the steering rack ratio on a 2016 STI?
The 2015-20 Subaru STI OEM 13:1 quick ratio steering rack is able to be swapped directly into 2008-14 Subaru STI's for quicker steering response and ultimately a shorter distance lock to lock.
