A steering rack doesn’t last forever, but its lifespan varies. Whether it’s a hydraulic rack in an older sedan, an electric power steering rack in a modern SUV, or a heavy-duty rack in a commercial vehicle, each type has different durability. This guide covers the steering rack’s lifespan, signs of wear, and tips to extend its life.
How Many Miles Should A Steering Rack Last?
A steering rack typically lasts between 100,000 and 150,000 miles under normal driving conditions. However, aggressive driving, rough road conditions, and power steering fluid leaks can shorten its lifespan. Proper maintenance, including regular inspections and fluid changes, can extend its life beyond 200,000 miles.
Lifespan by Vehicle Type
Not all vehicles put the same strain on the steering rack. On average:
- Sedans & Hatchbacks: 100,000 – 150,000 miles
- SUVs & Trucks: 120,000 – 180,000 miles (built for rougher use)
- Sports Cars: 80,000 – 120,000 miles (harder driving = faster wear)
- Commercial Vehicles: 70,000 – 100,000 miles (constant high-load usage)
Lifespan by Steering Rack Type
Different steering systems have different durability levels:
- Hydraulic Power Steering (HPS): 100,000 – 150,000 miles
- Electric Power Steering (EPS): 150,000 – 200,000 miles
- Manual Steering Rack: 200,000+ miles
Lifespan by Steering Rack Material
- Aluminum Alloy: 100,000 – 140,000 miles
- Steel: 120,000 – 180,000 miles
- Carbon Fiber/Composite: 150,000+ miles
Choosing the right steering rack type and material makes a big difference in how long it lasts.
When Should a Steering Rack Be Replaced?
A steering rack doesn’t fail overnight—it gives warning signs first. If a customer complains about loose steering, strange noises, or fluid leaks, these could all indicate the rack is wearing out. Here are some red flags to look out for:
- Steering feels loose or unresponsive
- Turning the wheel feels harder than usual
- Power steering fluid leaking under the car
- Unusual clunking or knocking sounds when turning
If these symptoms show up, ignoring them could lead to total steering failure. In some cases, the rack can be repaired, but often, a full replacement is the safest option.
What Causes Steering Rack Damage?
A well-made steering rack should last a long time, but certain factors can speed up wear and tear. The most common culprits include:
- Power Steering Fluid Contamination – Dirty or old fluid increases internal wear.
- Aggressive Driving – Hard turns and sudden steering movements strain the rack.
- Poor Road Conditions – Potholes, curbs, and off-road driving increase stress.
- Lack of Maintenance – Regular servicing can extend a rack’s lifespan significantly.
How to Extend the Life of a Steering Rack?
A steering rack doesn’t have to fail early. With proper maintenance, it can last well beyond 150,000 miles. Here are some key ways to keep it in top condition:
Change Power Steering Fluid Regularly
Power steering fluid breaks down over time, leading to increased wear. Replacing it every 30,000 – 50,000 miles keeps the system running smoothly.
Avoid Turning the Wheel to Full Lock
Holding the steering wheel at its maximum turn position puts unnecessary stress on the rack, especially in hydraulic systems.
Check for Leaks & Unusual Noises
Early signs of trouble—like minor fluid leaks or slight knocking sounds—shouldn’t be ignored. Fixing small problems prevents major failures later.
Maintain Suspension & Tire Health
Misaligned wheels and bad suspension put extra strain on the steering rack. Keeping these in check reduces wear.
By following these steps, a maintained steering rack will run for more than 200,000 miles, saving the customer from costly repairs.
