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Hubcentric 15mm Wheel Spacers That Push Your Stance Without Compromising Safety
The H&R HRS3085738 Trak+ DRM Wheel Spacer is a hubcentric 15mm spacer engineered for vehicles running a 5x120.65 bolt pattern with a 73.8mm center bore and 1/2" UNF stud thread. H&R's DRM (Dual Ring Mount) design provides full hub-centric contact at both the wheel hub and the wheel center bore, distributing load forces evenly just as the factory hub does. This eliminates the vibration and imbalance risks associated with lug-centric spacers. The HRS3085738 is machined from H&R's proprietary aluminum alloy, which has a higher tensile strength than standard 6061-T6 billet, and includes the necessary hardware for a complete installation. Adding 15mm per side widens the track for a more aggressive stance and improved cornering stability.
Key Features
- Hubcentric DRM design with full hub contact for safe, vibration-free installation
- 15mm spacer width per side (30mm total track increase per axle)
- 5x120.65 bolt pattern for GM and Chevrolet performance platforms
- 73.8mm center bore machined to match factory hub diameter
- 1/2" UNF stud thread for correct wheel bolt engagement
- Proprietary H&R alloy with higher tensile strength than 6061-T6
- TUV-approved engineering
Specifications
| Detail | Value |
|---|---|
| Part Number | HRS3085738 |
| MPN | HRS3085738 |
| Spacer Width | 15mm per side |
| Track Widening (per axle) | 30mm |
| Bolt Pattern | 5x120.65 |
| Center Bore | 73.8mm |
| Stud Thread | 1/2" UNF |
| Construction | Proprietary H&R Aluminum Alloy |
| Type | DRM Hubcentric Wheel Adaptor/Spacer |
| Quantity | Set of 2 |
| Brand | H&R Springs |
| UPC | Not specified |
What's Included
- 2x H&R HRS3085738 Trak+ 15mm DRM hubcentric wheel spacers
- Required mounting hardware
About H&R Springs
H&R Springs is a German manufacturer with over 40 years of experience producing suspension and wheel fitment components for both OEM and aftermarket applications. The Trak+ wheel spacer line is engineered with the same precision and material standards H&R applies to their coilover and spring products, providing a safe and reliable method for widening track width across a wide range of vehicle platforms.
Frequently Asked Questions
What vehicles does the HRS3085738 fit?
The HRS3085738 fits any vehicle with a 5x120.65 bolt pattern, 73.8mm center bore, and 1/2" UNF stud thread. This specification is associated with select Chevrolet and GM performance platforms. Verify your vehicle's hub specs before ordering.
What is the difference between a DR and DRM spacer?
The DRM (Dual Ring Mount) design adds a second centering ring to provide hubcentric contact at both the hub and the wheel center bore simultaneously, improving load distribution and reducing the risk of vibration compared to a standard DR spacer with a single ring.
Do I need extended wheel bolts with the HRS3085738?
The HRS3085738 is a DRM adaptor spacer that uses your existing wheel bolts to attach the spacer to the hub, then provides its own stud threads for the wheel. Review H&R's fitment guide for your specific vehicle to confirm bolt engagement requirements.
Is 15mm a safe amount to space my wheels?
H&R Trak+ spacers are engineered and TUV-approved at their rated widths. The 15mm DRM design maintains full hubcentric contact and correct load paths. As with all wheel spacers, ensure proper thread engagement and torque to factory specification.
Will adding H&R Trak+ spacers void my vehicle warranty?
In the US, a manufacturer cannot void your warranty solely for using aftermarket parts unless they can demonstrate the part caused the failure. H&R spacers are widely used on daily-driven and track-prepped vehicles without warranty issues. Consult your dealer for clarification if you have warranty concerns.
How do I ensure proper installation of the HRS3085738?
Clean the hub and wheel mating surfaces before installation. Torque the spacer mounting bolts and wheel bolts to H&R's specified values using a torque wrench. Recheck torque after the first 50 miles of driving.
Are H&R Trak+ spacers hubcentric?
Yes. The HRS3085738 is a hubcentric DRM spacer that centers on the factory hub diameter (73.8mm), ensuring balanced wheel rotation and eliminating the vibration risks of lug-centric designs.
What is the total track width increase when using HRS3085738 on both sides of an axle?
Installing the 15mm HRS3085738 on both sides of an axle increases the total track width by 30mm (approximately 1.18 inches) on that axle.
Installation Instructions
- Safely lift and support the vehicle. Remove the wheel from the axle you are fitting the spacer to.
- Clean the hub face and wheel mating surfaces thoroughly to remove any rust, debris, or residue.
- Mount the HRS3085738 spacer to the hub and torque the spacer mounting bolts to H&R's specified value.
- Mount the wheel onto the spacer studs and install wheel bolts finger-tight.
- Torque wheel bolts to factory specification in a star pattern.
- Lower the vehicle and recheck wheel bolt torque after the first 50 miles of driving.
H&R
H&R Special Springs is a German suspension manufacturer founded in 1984 that produces premium lowering springs, coilover kits, sway bars, wheel spacers, and complete suspension systems for European, Japanese, and domestic performance vehicles. The brand's springs are manufactured in Germany using a progressive-rate design that provides a lower stance with improved handling compared to stock while maintaining the compliance needed for daily driving on imperfect road surfaces. H&R coilover systems including the Street Coilover and Sport Coilover lines provide adjustable ride height from approximately 1 to 3 inches of drop alongside matched shock absorbers that are calibrated for the specific vehicle's weight and suspension geometry. The brand's TUV and ECE certifications for European applications ensure compliance with European vehicle regulations, and H&R's decades of development testing on German roads and race tracks produce suspension systems with well-developed, confi...
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