1. Introduction
The Kenda Vezda UHP A/S (KR400) is an ultra-high-performance all-season tire designed for use on sports cars, coupes, and sedans. This manual provides essential information for the proper installation, operation, and maintenance of your Kenda Vezda UHP A/S KR400 tires to ensure optimal performance and longevity.
It features a special silica-based rubber compound that allows for better traction and performance year-round. The low void outer tread increases traction and handling performance in dry weather, while a high void inner tread boosts handling and traction on wet roads for true year-round traction.
2. Key Features
- Designed for use on sports cars, coupes, and sedans.
- Developed at Kenda American Technical Center in Akron, OH.
- Built with 3D siping that creates additional biting edges for better traction on snowy roads and solid handling performance on dry roads.
- Four large circumferential grooves drain water from the tire to reduce the risk of hydroplaning on wet roads.
Figure 1: Kenda Vezda UHP A/S KR400 All Season Tire. This image shows the tire mounted on a wheel, highlighting its tread pattern and sidewall design.
3. Setup and Installation
Proper installation is crucial for tire performance and safety. It is highly recommended that tire installation be performed by a certified professional.
3.1 Pre-Installation Checks
- Inspect Tires: Before mounting, visually inspect each tire for any manufacturing defects or shipping damage.
- Verify Size and Type: Ensure the tire size (215/55-17) and type (All Season) match your vehicle's specifications.
- Check Rims: Ensure rims are clean, undamaged, and compatible with the tire size. The recommended rim width is 7 inches.
3.2 Mounting Instructions
- Lubricate Beads: Apply a suitable tire mounting lubricant to the tire beads and rim flanges.
- Mount Tire: Use appropriate tire mounting equipment to carefully mount the tire onto the rim, ensuring the directional arrows (if present) align with the direction of rotation.
- Inflate: Inflate the tire slowly to the recommended pressure, ensuring the beads seat properly. Do not exceed the maximum pressure of 44 PSI.
- Balance: Dynamically balance the tire and wheel assembly to prevent vibrations and ensure even wear.
- Install on Vehicle: Install the balanced wheel assembly onto the vehicle, tightening lug nuts to the manufacturer's specified torque.
Figure 2: Front view of the Kenda Vezda UHP A/S KR400 tire. This image provides a clear view of the tire's tread pattern from the front.
4. Operating Guidelines
Adhering to proper operating guidelines will maximize the lifespan and performance of your Kenda Vezda UHP A/S KR400 tires.
4.1 Tire Pressure
- Maintain tire pressure according to your vehicle manufacturer's recommendations, typically found on a placard inside the driver's door jamb or in the owner's manual.
- Check tire pressure monthly, or before long trips, using a reliable pressure gauge. Check when tires are cold.
- Proper inflation is critical for safety, fuel efficiency, and tire longevity. Under-inflation can lead to excessive heat buildup and premature wear, while over-inflation can reduce traction and ride comfort.
4.2 Driving Conditions
- While these are all-season tires, extreme winter conditions (heavy snow, ice) may require dedicated winter tires for optimal safety.
- Avoid sudden acceleration, braking, and sharp turns, especially on wet or slippery surfaces, to minimize tire wear and maintain control.
- Be mindful of road hazards such as potholes, curbs, and debris, which can damage tires and wheels.
Figure 3: Side view of the Kenda Vezda UHP A/S KR400 tire. This image shows the tire's profile and sidewall markings.
5. Maintenance
Regular maintenance extends the life of your tires and ensures consistent performance.
5.1 Tire Rotation
- Rotate your tires every 5,000 to 7,500 miles, or as recommended by your vehicle manufacturer. This helps ensure even wear across all four tires.
- Follow the recommended rotation pattern for your vehicle type (e.g., front-wheel drive, rear-wheel drive, all-wheel drive).
5.2 Wheel Alignment and Balancing
- Have your wheel alignment checked annually or if you notice uneven tire wear, steering pull, or vibrations.
- Re-balance tires if you notice vibrations, especially after hitting a large pothole or curb.
5.3 Tire Inspection
- Regularly inspect tires for signs of damage, such as cuts, bulges, cracks, or punctures.
- Check tread depth using a tread depth gauge. Replace tires when the tread wears down to 2/32 inch (1.6 mm), indicated by the tread wear indicators.
- Remove any stones or debris lodged in the tread grooves.
Figure 4: Back view of the Kenda Vezda UHP A/S KR400 tire. This image provides another perspective of the tire's tread and overall shape.
6. Troubleshooting Common Issues
| Problem | Possible Cause | Solution |
|---|---|---|
| Uneven Tread Wear | Improper tire pressure, misaligned wheels, unbalanced tires, worn suspension components. | Check and adjust tire pressure. Have alignment and balancing checked by a professional. Inspect suspension. |
| Vibrations or Shaking | Unbalanced tires, bent rim, worn suspension, tire damage. | Have tires re-balanced. Inspect rims and tires for damage. Consult a mechanic for suspension issues. |
| Tire Losing Air | Puncture, leaky valve stem, damaged rim, bead leak. | Inspect tire for punctures. Check valve stem. Have tire professionally inspected and repaired or replaced. |
| Hydroplaning | Worn tread, excessive speed in wet conditions, improper tire pressure. | Reduce speed in wet conditions. Ensure proper tire pressure. Replace tires if tread is worn. |
7. Product Specifications
| Specification | Value |
|---|---|
| Brand | Kenda |
| Model | Vezda UHP A/S KR400 |
| Size | 215/55-17 |
| Seasons | Year Round |
| Section Width | 8.9 Millimeters |
| Load Capacity | 1477 Pounds |
| Tread Depth | 10.5 Millimeters |
| Tread Type | Asymmetrical |
| Maximum Pressure | 44 Pound per Square Inch |
| Rim Width | 7 Inches |
| Tire Diameter | 26.3 Inches |
| Item Weight | 25.8 Pounds |
| Construction Type | Radial |
| UTQG | 500AAA |
| OEM Part Number | 400032 |
8. Warranty Information
The Kenda Vezda UHP A/S (KR400) tire is backed by an up to 50,000 mile limited manufacturer tread life warranty on regular fitments. For staggered fitment applications, a 25,000 mile limited manufacturer tread life warranty applies.
For complete details regarding warranty coverage, terms, conditions, and claim procedures, please refer to the official Kenda Tire warranty documentation provided with your purchase or visit the Kenda Tires official website.
9. Customer Support
For further assistance, technical inquiries, or support, please contact Kenda customer service or visit their official website.
- Kenda Official Website: www.kendatire.com
- Amazon Product Page: View Product on Amazon