Ride Height Drop
Designed to improve handling while maintaining practical ground clearance.
| Position | Ride Height Drop |
|---|---|
| Front | 1.5 inches |
| Rear | 1.5 inches |
The balanced ride height reduction gives the E9X platform a lower center of gravity and a cleaner factory-plus stance without excessive scraping during normal street driving.
Progressive Spring Design
The TH-E90 lowering springs feature a progressive spring design that increases spring rate as suspension compression increases.
Benefits include:
- Comfortable ride during daily driving
- Improved cornering stability
- Better suspension response
- Reduced body movement
- Increased support under heavy braking
- More predictable chassis balance
This progressive design provides responsive handling without the harsh ride often associated with aggressive lowering springs.
Premium SAE 9254 Spring Steel Construction
Each spring is manufactured from SAE 9254 high-tensile spring steel, chosen for its excellent fatigue resistance and ability to maintain consistent ride height.
Construction features include:
- SAE 9254 spring steel
- Precision cold-wound manufacturing
- Multiple heat-treatment cycles
- Powder-coated corrosion-resistant finish
- Engineered for long-term durability
- High-strength spring design
The combination of cold winding and repeated heat treatment helps resist premature sagging while maintaining consistent performance.
Improve BMW Handling
The BMW E9X chassis is already respected for its balanced handling, and lowering the suspension enhances those characteristics even further.
Performance improvements include:
- Reduced body roll
- Improved steering precision
- Lower center of gravity
- Better cornering grip
- Reduced weight transfer
- Reduced brake dive
- Improved traction
- Increased chassis stability
- More aggressive appearance
These benefits make the TH-E90 springs well suited for spirited street driving and occasional track days.
Comfortable Daily Driving
Although designed to improve performance, the TH-E90 springs maintain excellent ride comfort.
The suspension is engineered to:
- Reduce harsh impacts
- Prevent suspension bottoming
- Maintain smooth highway ride quality
- Improve suspension balance
- Provide confidence during everyday driving
The result is a suspension upgrade that’s enjoyable both on the daily commute and during weekend drives.
Compatible with OEM and Aftermarket Dampers
The TH-E90 lowering springs are designed to work with:
- Factory BMW shocks
- OEM replacement dampers
- Performance aftermarket shocks
- Adjustable suspension systems
Factory shocks may be reused if they remain in good condition, although upgraded dampers will maximize handling and ride quality.
Installation Information
Estimated Installation Time
2-4 hours
Professional installation is highly recommended.
Following installation:
- Perform a professional four-wheel alignment.
- Inspect strut mounts and suspension bushings.
- Verify wheel and tire clearance.
- Recheck suspension fasteners after initial break-in.
Proper alignment is critical after lowering to preserve BMW handling characteristics and maximize tire life.
Technical Specifications
| Specification | Details |
| Brand | TH Performance |
| Part Number | TH-E90 |
| Vehicle | BMW 3 Series |
| Years | 2007-2013 |
| Chassis | E90, E91, E92, E93 |
| Material | SAE 9254 High-Tensile Spring Steel |
| Construction | Cold-Wound |
| Heat Treatment | Multiple Heat Treatment Cycles |
| Finish | Blue Powder Coat |
| Front Drop | 1.5 in |
| Rear Drop | 1.5 in |
| Spring Design | Progressive Rate |
| OEM Shock Compatible | Yes |
| Aftermarket Shock Compatible | Yes |
| Corrosion Resistant | Yes |
| Return Policy | 30-Day Hassle-Free Returns |
Frequently Asked Questions
Will these fit my 2011 BMW 335i Coupe?
Yes. These springs are designed for the E92 335i, provided your suspension configuration matches the application.
Will these fit xDrive models?
Some xDrive vehicles use different suspension geometry. Always verify compatibility with your specific AWD model before ordering.
Are these compatible with the BMW M3?
No. The E90/E92/E93 M3 uses a unique suspension setup and requires M3-specific lowering springs.
Can I keep my factory shocks?
Yes. The springs are compatible with OEM shocks, although performance dampers will provide better handling and ride control.
Is a wheel alignment required?
Absolutely. Lowering the vehicle changes suspension geometry, making a professional alignment essential for proper handling and tire wear.
Why Buy From Pro Street Online?
At Pro Street Online, we understand that BMW suspension upgrades should enhance performance without sacrificing refinement. That’s why we offer quality suspension components backed by knowledgeable enthusiast support, helping you build a 3 Series that performs as well as it looks.
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