BOLA 32er 45mm Carbon Road & Gravel Rim | 38mm Outer, 32mm Inner, Tubeless Ready
BOLA 32er 45mm Carbon Road & Gravel Rim | 38mm Outer, 32mm Inner, Tubeless Ready
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BOLA 32er 45mm Carbon Road Rim offers riders a 45mm aerodynamic profile with 38mm outer and 32mm (hooked)/33mm (hookless) internal width, maximizing tubeless compatibility for both road and gravel bikes. Certified to ETRTO and ISO standards and constructed with Toray T700 carbon, this rim delivers stable performance at a cost-effective price point without the brand premium.
Key Features & Specs
- Rim Depth: 45mm
- Outer Width: 38mm
- Internal Width: 32mm (hooked) / 33mm (hookless)
- Profile: Asymmetric U-shape, aerodynamic, tubeless-ready
- Material: Toray T700 UD high-modulus carbon fiber
- Rim Size: 32 inch (ISO 696mm BSD)
- ERD (Effective Rim Diameter): 612mm
- Weight Options: 445g–530g (multiple layups)
- Brake Compatibility: Disc brake (6-bolt & Centerlock)
- Tire Compatibility: Tubeless and clincher; recommended tire 28–32mm
- Certifications: ETRTO & ISO compliant; dynamic balance tested
- Warranty: 3-year manufacturer warranty (excl. crash damage)
How it Compares
| Feature | BOLA 32er 45mm Rim | High-Performance Model (e.g., D32-49 49mm Rim) |
|---|---|---|
| Rim Depth | 45mm | 49mm |
| Internal Width | 32mm/33mm | 32mm |
| Weight | 445g–530g | 420g |
| Material | Toray T700 UD Carbon | Toray T700/T800 Carbon |
| Brake Compatibility | Disc (6-bolt, Centerlock) | Disc |
| Certifications | ETRTO, ISO | ETRTO, ISO |
| Warranty | 3 years | Varies (typically 1–2 years) |
| Price Tier | Mid (cost-effective, factory-direct) | Mid-high (brand premium) |
Recommended Use Cases
- Upgrading to tubeless-ready aero wheels for endurance road cycling
- Building lightweight, wide-internal wheels for modern gravel bikes
- Training or racing on mixed terrain with high tire volume (28–32mm)
- B2B: Stocking dependable carbon rims for global retail, resale, or OEM builds
- Intermediate cyclists seeking performance and versatility at a competitive price
Frequently Asked Questions
What advantages does a 32mm inner width offer for tubeless gravel and road builds?
This internal width supports wider tubeless tire setups (28–32mm+), delivering enhanced stability and lower rolling resistance for both road and gravel rides, especially on variable surfaces.
How does a 45mm deep carbon rim handle in crosswinds on long rides?
The 45mm aerodynamic profile balances aero advantage with improved crosswind stability, aided by its asymmetric design and wide internal width. Most testers report predictable handling even in variable wind conditions.
Should I choose hookless or hooked for tubeless compatibility?
Hookless rims offer a smoother tubeless tire interface and can reduce pinch flats at lower pressures, but both hookless (ETRTO certified) and hooked are compatible with modern tubeless-ready tires. Always check tire manufacturer compatibility and pressure limits.
Is this rim suitable for endurance or gran fondo racing?
Yes, the 45mm profile delivers a blend of aerodynamic benefit and handling stability for endurance events. It is designed for all-day riding comfort and efficiency.
What is unique about the 32-inch size and ERD 612mm?
The 32-inch (ISO 696mm) BSD matches modern road and gravel standards, allowing optimized geometry for larger-volume tires, which improves comfort, compliance, and handling over longer distances.
