Types of TWE Roof Box
A TWE roof box is a premium vehicle accessory that provides extra storage space for cars, perfect for long journeys, family vacations, and outdoor adventures. Known for their durability, aerodynamic design, and security features, TWE roof boxes come in various sizes to accommodate different storage needs.
TWE 450 Roof Box
The TWE 450 is a versatile soft roof box with a capacity of 450 liters, ideal for small to medium-sized vehicles.
- Made from flexible, weather-resistant material
- Lightweight and easy to install
- Perfect for weekend trips and small families
- Quick installation - ready in minutes
TWE 500 Roof Box
The TWE 500 offers a generous 500-liter capacity with enhanced protection features.
- Premium waterproof and UV-resistant materials
- Sophisticated anti-theft locking system
- Reinforced construction for durability
- Ideal for long-distance travelers seeking extra space
TWE 550 Roof Box
The TWE 550 provides 550 liters of storage with innovative access features.
- Dual-opening system for convenient access from both sides
- High-grade waterproof construction
- Enhanced security with multi-point locking
- Perfect for family vacations and extended trips
TWE 600 Roof Box
The flagship TWE 600 boasts an impressive 600-liter capacity for maximum storage.
- Largest option in the TWE lineup
- Dual-sided opening for easy access
- Premium waterproof construction with reinforced corners
- Designed for large families and equipment-heavy adventures
| Model | Capacity | Best For | Opening System | Key Features |
|---|---|---|---|---|
| TWE 450 | 450 liters | Weekend trips, small families | Single side | Soft material, lightweight |
| TWE 500 | 500 liters | Long-distance travelers | Single side | UV resistant, anti-theft system |
| TWE 550 | 550 liters | Family vacations | Dual-opening | Durable, waterproof, multi-point locking |
| TWE 600 | 600 liters | Large families, equipment-heavy trips | Dual-opening | Maximum capacity, reinforced structure |
Expert Tip: When comparing TWE roof box models, consider not just the capacity but also how you'll access your gear. The dual-opening system on the 550 and 600 models allows access from either side of your vehicle, which can be invaluable when parking in tight spaces.
Specifications and Maintenance of TWE Roof Boxes
Mounting Systems
The mounting system is crucial for secure installation and ease of use. TWE roof boxes feature two primary mounting options:
Clamping Systems
- Uses adjustable brackets to fit onto roof rails
- Universal compatibility with most vehicle types
- Tool-free installation on many models
- Quick-release mechanisms for easy removal
Track-Mounted Systems
- Slides onto pre-installed tracks
- Enhanced stability during high-speed driving
- Better weight distribution
- Precision positioning capabilities
Security Features
TWE roof boxes incorporate advanced security features to protect your valuables:
- Lock Systems: High-quality internal lock mechanisms with unique keys
- Dual-Opening System: Allows loading from either side while maintaining security
- Anti-Theft Protection: Reinforced mounting points prevent box removal without proper tools
- Central Locking: Premium models feature central locking for enhanced convenience
Aerodynamic Design
TWE roof boxes feature carefully engineered aerodynamic profiles that:
- Minimize wind resistance to maintain fuel efficiency
- Reduce wind noise for a quieter driving experience
- Feature streamlined shapes with low profiles
- Include wind diffusers on premium models to further reduce drag
Fuel Efficiency Tip: TWE's aerodynamic designs typically result in just 2-5% increased fuel consumption compared to 10-15% with older box designs. Position your box centrally on the roof for optimal aerodynamics.
Materials
TWE roof boxes utilize high-performance materials for durability and functionality:
| Material | Benefits | Common in Models |
|---|---|---|
| ABS Plastic | Strong, affordable, UV-resistant | TWE 450, 500 |
| Fiberglass | Lightweight, durable, impact-resistant | TWE 550 |
| ABS/PMMA Blend | Enhanced durability, premium finish | TWE 600 |
| Aluminum Reinforcements | Corrosion resistant, structural integrity | All premium TWE models |
Maintenance
Proper maintenance extends the lifespan and performance of your TWE roof box:
| Maintenance Task | Frequency | Instructions |
|---|---|---|
| Cleaning | After each use / Monthly | Wash with mild soap and water, avoid harsh chemicals |
| Lock Maintenance | Every 3 months | Apply graphite-based lubricant, avoid WD-40 |
| Seal Inspection | Bi-annually | Check rubber seals for cracks, apply silicone protectant |
| Hardware Check | Before each trip | Ensure all mounting hardware is tight and secure |
| Storage | When not in use | Store in cool, dry place, slightly open to prevent odors |
Important: Always remove your TWE roof box when not in use for extended periods. This prevents unnecessary wear on both the box and your vehicle's roof system, extends the life of the seals, and improves fuel efficiency.
How to Choose a TWE Roof Box
Car Compatibility
Ensuring your TWE roof box properly fits your vehicle is essential for safety and functionality:
- Roof Cross Bars: Verify the type, width, and load capacity of your existing cross bars
- Vehicle Dimensions: Measure your roof length and width to avoid overhang issues
- Weight Limitations: Check your vehicle's dynamic roof load capacity (typically 50-100kg)
- Compatibility Tools: Use TWE's online vehicle compatibility checker for guaranteed fit
Storage Needs Assessment
Selecting the right capacity is crucial for meeting your specific requirements:
| TWE Model | Capacity | Typical Storage | Ideal For |
|---|---|---|---|
| TWE 450 | 450 liters | 3-4 medium suitcases | Couples, weekend trips |
| TWE 500 | 500 liters | 4-5 medium suitcases | Small families, week-long trips |
| TWE 550 | 550 liters | 5-6 medium suitcases | Family vacations, camping trips |
| TWE 600 | 600 liters | 6-7 medium suitcases | Large families, extended vacations |
Installation Convenience
Consider how easily you can mount and remove the roof box:
- Quick-Mount Systems: Some TWE models feature tool-free installation in under 10 minutes
- Foot Packs: Pre-assembled mounting hardware speeds up installation
- Weight Factor: Lighter boxes are easier to lift and position on your vehicle
- Installation Assistance: Consider whether you'll have help when mounting
Aerodynamic Properties
The aerodynamic design impacts fuel economy and noise levels:
- Wind Resistance: Low-profile boxes reduce drag and fuel consumption
- Noise Reduction: Streamlined designs minimize wind noise at highway speeds
- Coefficient of Drag: Lower values indicate better aerodynamic performance
- Front Spoilers: Premium TWE models include air deflectors for improved airflow
Security Considerations
Protect your belongings with appropriate security features:
- Lock Systems: Multi-point locking for enhanced security
- Key Types: Some models offer central locking or keyed-alike options
- Reinforced Mounting: Anti-theft securing systems prevent unauthorized removal
- Hidden Compartments: Select models feature concealed storage areas
Weather Resistance
Ensure your belongings stay protected in all conditions:
- Waterproofing: Look for IP ratings that indicate water resistance level
- Seal Quality: Premium rubber seals prevent water ingress
- Material Durability: UV-resistant materials prevent degradation from sun exposure
- Cold Weather Performance: Some materials become brittle in extreme cold
Budget Considerations
Balance cost with features to find the best value:
| Price Range | Typical Features | Best For |
|---|---|---|
| Entry-Level ($200-350) | Basic functionality, single-side opening | Occasional users, budget-conscious buyers |
| Mid-Range ($350-500) | Dual-side opening, improved materials | Regular travelers, small families |
| Premium ($500-700) | Advanced security, quick-mount systems | Frequent travelers, those valuing convenience |
| Elite ($700+) | Maximum capacity, premium materials, all features | Long-term investment, professional users |
Value Tip: Consider the frequency of use when choosing a price point. For regular users, investing in a higher-quality TWE roof box often pays off in durability, features, and resale value. However, occasional users might be better served by mid-range options.
How to DIY Install and Replace a TWE Roof Box
Installing a TWE roof box is straightforward with proper preparation and attention to detail. Follow this comprehensive guide to ensure safe and secure mounting.
Preparation
Thoroughly clean your vehicle's roof and cross bars before installation. Remove any dirt, debris, or moisture that could affect the mounting process. Gather all necessary tools and familiarize yourself with the components included with your TWE roof box.
Positioning
With assistance, place the roof box on the vehicle's cross bars. Position it parallel to the roof rails and centered between the doors. Ensure it does not interfere with the vehicle's antenna, rear hatch, or sunroof operation. For optimal weight distribution, center the box both front-to-back and side-to-side.
Initial Mounting
Open the roof box to access the mounting hardware inside. Locate the mounting brackets or clamps and position them over the cross bars. For TWE boxes with U-bolts, place them around the cross bar from underneath, then thread them through the mounting plates inside the box.
Securing First Side
Begin securing one side of the box by hand-tightening the fasteners. For clamping systems, ensure the clamps are properly positioned on the cross bars before tightening. Don't fully tighten yet, as you'll need to make adjustments to ensure proper alignment.
Aligning and Securing Opposite Side
Move to the opposite side and position the mounting hardware. Check that the box remains parallel to the roof and centered. Begin tightening these mounting points while maintaining alignment. Alternate between sides as you tighten to maintain even pressure.
Final Tightening
Once all mounting points are aligned and hand-tightened, use a wrench or the included torque tool to secure all fasteners to the manufacturer's specifications. Be careful not to overtighten, as this can damage the mounting hardware or the roof box.
Security Check
Test the security of the installation by firmly pushing the box from various angles. There should be no movement or shifting. Check that all mounting points are tight and that the box is evenly supported. Ensure the box opens and closes properly from both sides (if dual-opening).
Final Safety Verification
Before driving, verify that the box doesn't interfere with the vehicle's sunroof, rear hatch, or antenna. Confirm that all locks function properly and that the box is fully closed and secured. After driving a short distance, stop and re-check all mounting points for tightness.
Safety Warning: Never exceed the maximum load capacity of either your vehicle's roof system or the TWE roof box itself. Most vehicle roof systems have a dynamic (when moving) weight limit of 50-100kg, while static (parked) limits may be higher. Always check your vehicle's owner manual for specific weight restrictions.
Installation Tip: For easier installation of heavier TWE models (550 and 600), place a blanket or towel on your vehicle's roof next to where you'll mount the box. This allows you to rest one edge of the box while positioning it, reducing the risk of scratching your vehicle or straining your back.
Frequently Asked Questions
No, a tow bar is not necessary for installing a TWE roof box. Roof boxes are designed to mount directly onto roof cross bars or a roof rack system. These cross bars attach to your vehicle's roof rails or fixed points and provide the mounting surface for the roof box. Tow bars are completely separate systems used for towing trailers and have no relation to roof storage systems.
Yes, vehicles with panoramic roofs can generally accommodate TWE roof boxes, but with some important considerations:
- Use roof racks specifically designed for vehicles with panoramic roofs
- Consult your vehicle manufacturer's guidelines for maximum roof load
- Be careful during installation to avoid contact with the glass surface
- Some panoramic roofs may have reduced load ratings compared to solid roofs
- The sunroof functionality might be limited when a roof box is installed
For optimal safety, have a professional assess your specific vehicle model if you're uncertain about compatibility.
The installation time for a TWE roof box typically ranges from 30-60 minutes, depending on several factors:
| Experience Level | Typical Installation Time | Notes |
|---|---|---|
| First-time installer | 45-60 minutes | Follow instructions carefully, take time to ensure proper mounting |
| Experienced installer | 20-30 minutes | Familiarity with the process speeds installation significantly |
| Professional installer | 15-20 minutes | Specialized tools and experience enable rapid installation |
For quickest installation, ensure you have all necessary tools ready, clean cross bars beforehand, and have assistance for lifting and positioning the box. TWE models with quick-mount systems can significantly reduce installation time once you're familiar with the process.
TWE roof boxes typically have weight capacities ranging from 50-75kg (110-165lbs), but the actual usable capacity depends on your vehicle's maximum roof load rating. Most passenger vehicles have dynamic roof load limits between 50-100kg when in motion. Always follow the lower of these two limits to ensure safety.
Remember that this weight limit includes the weight of the roof box itself (typically 15-25kg) plus cross bars (5-7kg), so your actual cargo capacity will be reduced accordingly.
Yes, installing a TWE roof box will impact your vehicle's fuel economy due to increased aerodynamic drag. Modern TWE roof boxes with advanced aerodynamic designs typically cause a 5-10% reduction in fuel efficiency at highway speeds, while older or less streamlined models may cause up to a 15-20% reduction.
To minimize the impact on fuel consumption:
- Choose an aerodynamically designed TWE model with a low profile
- Remove the roof box when not in use
- Drive at slightly reduced speeds (60-65mph is optimal)
- Ensure proper installation with the box centered on the roof