Bridgestone 146464
Bridgestone Battlax BT-021-U 190/50ZR17 Rear Tire User Manual
Model: 146464
Product Overview
The Bridgestone Battlax BT-021-U is a sport touring radial tire designed for motorcycles. It offers a blend of high performance and extended mileage, catering to touring-oriented riders. This tire incorporates a "Luxury Feel" concept, aiming to provide both sporty handling and comfortable touring characteristics. Its design focuses on minimizing vibration and noise for reduced rider fatigue during long journeys. The rear tire features a Dual Tread Compound with Cap Base Construction, which contributes to improved mileage from the center compound and enhanced grip from the shoulder compound, alongside better tread stiffness for overall performance in various conditions.
Image: Bridgestone Battlax BT-021-U 190/50ZR17 Rear Tire. This image displays the full profile of the tire, showcasing its tread pattern and sidewall.
Key Features
- Original Equipment (OE) Ultra-High Performance Sport Radial Tire
- Tubeless (TL) design
- Dual Tread Compound with Cap Base Construction for balanced mileage and grip
- Designed for reduced vibration and noise, enhancing rider comfort
- Suitable for year-round use
Setup and Installation
Proper installation of motorcycle tires is crucial for safety and performance. It is highly recommended that tire installation be performed by a qualified professional using appropriate tools and techniques.
Pre-Installation Checks:
- Inspect the Tire: Before mounting, carefully inspect the tire for any manufacturing defects, damage, or foreign objects.
- Rim Compatibility: Ensure the tire size (190/50ZR17) is compatible with your motorcycle's rim specifications. Refer to your motorcycle's owner's manual for recommended tire sizes.
- Valve Stem: Always replace the valve stem when installing a new tire to ensure proper sealing and prevent air leaks.
- Directional Arrows: Note any directional arrows on the tire sidewall. Tires must be mounted to rotate in the indicated direction.
Mounting Procedure (Professional Recommended):
- Clean the rim thoroughly, removing any old rubber residue or corrosion.
- Apply appropriate tire mounting lubricant to the tire beads and rim flanges.
- Carefully mount the tire onto the rim, ensuring the beads seat correctly.
- Inflate the tire to the recommended seating pressure, listening for the beads to seat with an audible pop. Do not exceed maximum seating pressure.
- Once seated, adjust the tire pressure to the motorcycle manufacturer's recommended cold inflation pressure. This information is typically found on a sticker on the swingarm, frame, or in the owner's manual.
- Balance the wheel and tire assembly using a suitable balancing machine.
Important: Incorrect tire mounting can lead to tire failure, loss of control, and serious injury. If you are unsure, seek professional assistance.
Operating Guidelines
Proper operation and maintenance are essential for maximizing tire life and ensuring rider safety.
Tire Pressure:
Maintain correct tire inflation pressure as specified by the motorcycle manufacturer. Check tire pressure when tires are cold (before riding). Under-inflation can lead to excessive heat buildup, premature wear, and potential tire failure. Over-inflation can reduce the tire's contact patch, affecting grip and ride comfort.
Break-in Period:
New tires require a break-in period, typically around 100 miles (160 km). During this period, avoid sudden acceleration, hard braking, and aggressive cornering. This allows the tire's surface to scuff in and the components to settle, providing optimal grip.
Load Capacity:
Do not exceed the maximum load capacity indicated on the tire sidewall. Overloading can cause excessive heat buildup and tire failure.
Speed Rating:
The BT-021-U has a speed rating of 'W' (168 mph / 270 km/h). Do not exceed the tire's maximum speed rating or the motorcycle's maximum speed, whichever is lower.
Maintenance
Regular inspection and maintenance will prolong the life of your Bridgestone Battlax tire.
Regular Checks:
- Tire Pressure: Check cold tire pressure at least once a week and before every long ride.
- Tread Depth: Inspect tread depth regularly. Replace the tire when the tread wears down to the wear indicators (typically 0.8mm for motorcycles).
- Damage Inspection: Visually inspect the tire for cuts, punctures, bulges, cracks, or any signs of impact damage. If damage is found, have the tire inspected by a professional immediately.
- Valve Caps: Ensure valve caps are always in place to prevent dirt and moisture from entering the valve stem.
Cleaning:
Clean tires with mild soap and water. Avoid using petroleum-based cleaners or tire dressings, as these can degrade the rubber compounds.
Storage:
If storing the motorcycle for an extended period, ensure tires are properly inflated and ideally off the ground to prevent flat spots. Store in a cool, dry place away from direct sunlight and ozone-producing equipment.
Troubleshooting
This section addresses common issues related to motorcycle tires.
| Problem | Possible Cause | Solution |
|---|---|---|
| Rapid or Uneven Tread Wear | Incorrect tire pressure, improper balancing, worn suspension components, aggressive riding style. | Check and adjust tire pressure. Have wheels balanced. Inspect motorcycle suspension. Adjust riding habits. |
| Vibration or Wobble | Unbalanced wheel, bent rim, damaged tire, loose wheel bearings. | Have wheel balanced. Inspect rim for damage. Check tire for bulges or deformities. Inspect wheel bearings. |
| Loss of Air Pressure | Puncture, faulty valve stem, improperly seated bead, rim damage. | Inspect tire for punctures. Check valve stem. Re-seat tire bead. Inspect rim for cracks or bends. Seek professional repair for punctures. |
| Reduced Grip | Under-inflation, worn tread, cold tire temperature, road conditions. | Check and adjust tire pressure. Replace worn tires. Allow tires to warm up. Adjust riding for conditions. |
For any issues not listed or if solutions do not resolve the problem, consult a certified motorcycle mechanic or tire specialist.
Specifications
| Attribute | Detail |
|---|---|
| Brand | Bridgestone |
| Model Name | Battlax BT-021-U |
| Manufacturer Part Number | 146464 |
| Item Model Number | 301035 |
| Size | 190/50ZR-17 |
| Section Width | 190 Millimeters |
| Aspect Ratio | 50 |
| Construction | Radial (R) |
| Rim Diameter | 17 Inches |
| Load Index | 73 (805 lbs / 365 kg) |
| Speed Rating | W (168 mph / 270 km/h) |
| Tread Type | Non-Directional |
| Seasons | Year Round |
| Item Weight | 15.7 Pounds (7.12 kg) |
| UPC | 092971279059 |
Warranty Information
Bridgestone tires are covered by a limited warranty against defects in material and workmanship. Specific warranty terms and conditions, including duration and coverage details, can vary. Please refer to the official Bridgestone website or contact Bridgestone customer service for the most current and detailed warranty information applicable to your region and product.
Note: This manual does not constitute a warranty. Warranty claims must be processed through authorized Bridgestone dealers.
Support and Contact
For technical assistance, product inquiries, or support regarding your Bridgestone Battlax BT-021-U tire, please contact Bridgestone customer service or visit their official website.
- Official Website: www.bridgestone.com (Please check for regional websites)
- Authorized Dealers: Locate an authorized Bridgestone tire dealer near you for professional service and advice.
When contacting support, please have your tire's model number (BT-021-U), size (190/50ZR17), and any relevant manufacturing codes ready.
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