KUMHO Ecsta PS91 - 245/45 ZR18 100Y XL
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Product Information
Full details
The KUMHO Ecsta PS91 is a high-performance summer tire designed for sports cars, sedans, and coupes, offering enhanced grip and high-speed durability for performance-oriented drivers. Its key benefit is superior handling and braking in both wet and dry conditions, stemming from its advanced tread compound and sidewall technology. A potential caveat for some users might be its focus on performance, which can sometimes translate to a firmer ride compared to touring tires.
All features
| Model Part Number | 2454518YKU2167303 |
|---|---|
| Brand | Kumho |
Extended Product Information
FAQs
What is the speed rating of the KUMHO Ecsta PS91 - 245/45 ZR18 100Y XL?
The 'ZR' in the tire size indicates a speed rating of over 149 mph (240 km/h), and the 'Y' speed index specifically denotes a maximum speed capability of 186 mph (300 km/h).
Is this tire suitable for winter driving?
No, the Ecsta PS91 is a high-performance summer tire and is not designed for use in winter conditions, including snow, ice, or temperatures below 7°C (45°F).
How does the asymmetrical tread pattern benefit performance?
The asymmetrical tread pattern is optimized to provide superior handling and traction on both dry and wet roads by ensuring specific tread blocks perform different functions, such as water evacuation and grip.
What does 'XL' mean in the tire size?
'XL' stands for Extra Load, indicating that the tire is built to carry a higher load capacity than a standard load tire of the same size.
How can I improve the lifespan of my Ecsta PS91 tires?
Regularly check tire pressure, maintain proper wheel alignment, rotate tires at recommended intervals, and avoid aggressive driving habits that lead to excessive wear.
What makes the ride quieter compared to other performance tires?
The tire features a noise-reducing design engineered to minimize road noise, providing a more comfortable and quieter driving experience, a key consideration in its overall performance package.
What is the primary advantage of the silica-based compound?
The silica and other high-grip materials in the compound significantly boost the tire's grip potential under various driving conditions, especially enhancing traction in both wet and dry environments.
Troubleshooting
Uneven tire wear
Ensure proper tire inflation, regular tire rotations, and check for wheel alignment issues. Consult a tire professional.
Increased road noise over time
Check tire pressure and ensure it is within the recommended range. Uneven wear patterns can also cause noise; consider rotation or replacement if wear is significant.
Reduced grip in wet conditions
Verify tire tread depth and check for any embedded debris in the grooves. Ensure tire pressure is correct, as under or over-inflation can affect contact patch and water evacuation.
Vibrations or shaking during driving
This may indicate a need for tire balancing or a potential issue with the wheel alignment. Seek professional inspection.
Pros and Cons
Pros
- Exceptional handling and cornering capabilities.
- Superior wet and dry traction.
- Improved braking performance.
- Designed for high-speed stability and durability.
- Reduced risk of hydroplaning.
- Comfortable and quiet ride for a performance tire.
Cons
- May offer a firmer ride compared to non-performance tires.
- Summer tire; not intended for use in freezing temperatures or snow.
- Performance focus might lead to quicker wear under extreme use.
- Specific compound may be less forgiving on rough road surfaces.
Setup, Compatibility & Care
Compatibility: The KUMHO Ecsta PS91 - 245/45 ZR18 100Y XL is designed to fit vehicles requiring an 18-inch rim diameter, a tire width of 245mm, an aspect ratio of 45, and a ZR speed rating with a load index of 100 (XL - Extra Load). Always confirm your vehicle's specific tire size requirements before installation. It is a high-performance summer tire and is not suitable for use in temperatures below 7°C (45°F) or in snow and ice conditions.
Installation: Professional installation by a certified tire technician is recommended. This includes proper mounting, balancing, and inflation to the vehicle manufacturer's recommended pressure. Ensure all four tires on the vehicle are the same size and type for optimal performance and safety.
Care: To maximize the life and performance of your Ecsta PS91 tires, regularly check tire pressure, rotate them at recommended intervals (typically every 5,000-8,000 miles), and perform wheel alignments as needed. Visually inspect tires for any signs of damage, wear, or foreign objects. Clean the tires with mild soap and water; avoid harsh chemicals or tire dressings that can degrade the rubber compound.