Tier-1 Engineered Wheel Catalog: Series A
Explore our high-load capacity, custom CNC machined monoblock and modular wheel platforms manufactured directly inside our certified Kunshan facility.
Technical Whitepaper: 5x115 PCD Billet Engineering Ecosystem
Shanghai Rimax Industry Co., Ltd. (operating under the global brand Kipardo) delivers precision-engineered wheel assemblies since 2010. Within modern vehicle architecture, the 5x115mm pitch circle diameter (PCD) represents a critical engineering tolerance primarily specified for high-output torque transfer platforms.
Metallurgical Precision & Forged Densification Dynamics
Why the 5x115 hub connection demands non-compromised forged structural integrity over traditional low-pressure casting solutions.
Continuous Grain Alignment
By applying a 10,000-ton forging die, the internal dendritic crystal microstructure of our 6061-T6 aluminum billet is compressed along the directional flow lines of the wheel spokes, eliminating microscopic gas voids and yielding an ultimate tensile strength exceeding 310 MPa.
5x115 PCD Hub Flange Integrity
The 5x115 layout requires strict engineering on the hub-bore landing surface (commonly 70.3mm or 71.5mm). Forging provides extreme fatigue shear resistance around the 60-degree conical lug seats, counteracting rotational torque spikes and high-shear lateral cornering stresses.
Rotational Mass Reduction
Compared to standard low-pressure casting, a monoblock 5x115 forged wheel achieves a 20% to 30% reduction in unsprung rotating mass. This directly translates into sharper steering response, reduced damper wear, and optimized regenerative braking efficiency in performance platforms.
Fitment Matrix & Cross-Platform Industrial Deployment
The 5x115 bolt pattern is globally recognized across both American performance sedans and modern luxury touring vehicles. Below are the verified technical tolerances executed in our factory.
| Target Platform / Vehicle Sector | Common Dimensions | Center Bore (CB) | Offset Range (ET) | Target Load Rating | Structural Standard |
|---|---|---|---|---|---|
| Muscle & Performance Touring (e.g., Charger, Challenger 392/Hellcat) |
20x9.5 / 20x11.0 / 21x10.5 | 71.6 mm / Direct Fit | +15 to +25 | 850 kg – 950 kg | SAE J2530 Heavy |
| Luxury Performance Saloons (e.g., Cadillac CTS-V, STS, XTS) |
19x8.5 / 20x9.0 | 70.3 mm hubcentric | +35 to +45 | 780 kg – 850 kg | JWL / VIA Verified |
| High-Torque Performance EVs (Specialty EV conversions & custom builds) |
19x8.5 / 20x9.5 Lightweight | Custom Billet Bore | +30 to +42 | 900 kg – 1000 kg | ISO 3006 / TUV |
| Full-Size Touring & Wagons (e.g., Chrysler 300C AWD/RWD) |
18x8.0 / 20x8.5 / 22x9.0 | 71.5 mm hubcentric | +18 to +42 | 820 kg – 890 kg | JWL Certified |
Deterministic Quality Assurance: The JWL/VIA Testing Loop
Our Kunshan manufacturing complex strictly enforces destructive, non-destructive, and accelerated environmental tests to ensure every batch exceeds regulatory minimums.
Dynamic Radial Fatigue
The wheel and tire assembly is placed on a rotating drum test bench operating under 2.2x dynamic rated load through over 500,000 cycles with zero micro-fractures detected.
Dynamic Bending Test
Simulating extreme lateral cornering g-forces. A continuous bending moment is applied directly to the hub pad to test the cyclic resistance of the 5x115 bolt circle region.
13° / 30° Impact Test
A heavy drop striker impacts the rim flange at high velocity to verify that kinetic energy absorption causes ductile deformation without sudden brittle failure or immediate air loss.
CASS Corrosion Assay
All surface coatings (including diamond cut, brushed tint, and liquid clear coats) undergo a 1,000-hour Copper-Accelerated Acetic Acid Salt Spray test to eliminate surface filiform corrosion risks.
Global Regulatory Compliance & OEM Support
Exporting custom forged assemblies demands seamless alignment with local import mandates, homologation filings, and private label logistics.
Private-Label White Box Logistics
We provide full white-label programs for specialized wheel brands: customized center caps with your brand insignia, bespoke laser etched spoke details, certified rim stickers, drop-tested 5-ply cartons, and container load optimization for 20GP/40HQ shipments.
Customs & Homologation Filing
Our documentation packages include full CMM dimensional measurement reports, material composition spectrometry mill test certificates, JWL testing validation sheets, and certificate of origin (Form A/E/RCEP) to streamline regional customs clearing.
5-Year / 100,000 KM Warranty
Every 5x115 forged wheel produced by Rimax/Kipardo is backed by a five-year structural integrity guarantee alongside a 2-year warranty on all physical finishes, ensuring zero liability friction for global distributors, wholesalers, and retail tuning networks.
Technical Roadmap & Metallurgy Modernization
Continuous investment in cutting-edge forging and sustainable manufacturing methodologies guarantees market competitiveness.
Ultra-High Tonning Press
Upgrading our current 10,000T forging lines to 12,000T hydraulic closed-die presses for complex multi-concave geometries with zero residual stresses.
Composite Barrel Integration
Developing lightweight two-piece designs pairing a 6061-T6 forged center with a prepreg carbon-fiber woven barrel, decreasing rotational inertia by 40%.
Topology Optimization
Deploying automated neural network topological solvers that hollow out spoke architecture precisely where stress loads are negligible, reducing total mass.
Green Metallurgy Compliance
Utilizing hydro-powered certified green 6061 billets with audited Scope 1 and Scope 2 carbon footprints to meet strict upcoming EU ESG and circular-economy mandates.
Technical & Commercial FAQ
Clear, definitive engineering guidance for OEM buyers, wheel brand owners, and high-performance distributors.
Can a 5x114.3mm wheel safely fit on a 5x115mm vehicle hub?
No. While 0.7mm difference may seem minor, installing a 5x114.3 wheel onto a 5x115 hub forces wheel studs to bend inward when torqued down. This induces destructive cyclic bending fatigue on the lug studs, risking catastrophic stud shearing under high torque loads. Always specify true 5x115 engineering.
What is the minimum order quantity (MOQ) for custom 5x115 forged wheels?
Unlike casting lines that require multi-thousand unit runs to amortize tooling steel molds, our forged CNC machining center operates with an MOQ of just 4 pieces (1 vehicle set) for bespoke private commissions, and 20 to 100 sets for volume distributor programs.
How does Rimax ensure clearance for oversized performance brake calipers?
Before initiating CNC milling, our CAD engineering team renders your exact wheel design over 3D scan profiles of common brake kits (e.g., Brembo 6-piston 380mm/400mm rotors). We adjust the spoke profile back-spacing and hub drop angle to ensure a minimum 3.0mm dynamic running clearance.
What surface finishes are viable on 6061-T6 forged wheels?
We provide mirror-polished finishes, fine-wire hand brushing, diamond-cut CNC machined faces, durable electrostatic powder coating, transparent tinted candies (e.g., gloss bronze, smoked titanium), and multi-stage PVD chrome applications with comprehensive salt spray resistance.
Tier-1 Engineered Wheel Catalog: Series B
Explore our specialized off-road, monoblock, multi-piece, and precision performance aftermarket designs engineered for reliable global distribution.
