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Our UHP Tires are economical ultra-high performance tires, which provide reliable traction and handling on highways, and will bring you a highly smooth driving experience. Their patterned surfaces will hold the dry road tightly, drain water from the tread area using circumferential grooves, and provide reliable wet traction.
Keman is a leading golbal provider of tyre and wheels,founded in 2002 by Keman Liu.After 17 years of development,the company has a broad influence in tyre and wheel industry field. Keman is committed to manufacture top quality tyres and wheels,bringing safety to every customers' automobile.At present the company has nearly 1100 patents,1800 employees.Our core value is Safety,Openness, Collaboration. Our products includes truck tyres,car tyres,industry tyres,OTR tyres,steels wheels,aluminum wheels with Keman brand and Polonez brand.Our tyres and wheels are widely used in automobile assembly plants and vehicle maintenance and repair markets over the world. At present,the technical index of products has reached standards of the US Department of Transportation(DOT) and the Economic Committee of Europe(ECE), ISO/TS 16949 Certificate ,furthermore,it has passed the certification of ISO9001 uality Management System ,ISO14000 environment system attestation.
Why Choose Us
Our factory
Keman is committed to manufacture top quality tyres and wheels,bringing safety to every customers' automobile.At present the company has nearly 1100 patents,1800 employees.
Our product
Our products includes truck tyres,car tyres,industry tyres,OTR tyres,steels wheels,aluminum wheels with Keman brand and Polonez brand.
Our certificate
At present,the technical index of products has reached standards of the US Department of Transportation(DOT) and the Economic Committee of Europe(ECE), ISO/TS 16949 Certificate ,furthermore,it has passed the certification of ISO9001 uality Management System ,ISO14000 environment system attestation.
Our service
All of Keman products enjoy 3 years warranty.With providing global customers with the most valuable products and services as own duty,Keman has established perfect after service to maintain a great brand image.
Our Winter Tyres, also known as snow tires or cold weather tires, are specially designed to cope with various cold and wet environments. They can be used in snow and help maintain a safe and stable driving experience. They have been significantly improved in terms of braking and grip. Under wet and slippery conditions, they can allow faster braking speed and prevent accidents such as rear end collision caused by skidding.
Our Passenger Car Tyres are made for cars and minivans, aiming to provide you with quiet and smooth driving, and are suitable for all seasons. They have excellent traction and durable tread wear resistance, so they are responsive and easy to operate when cornering or braking in traffic. However, because they are of light structure, they do not support heavy loads and should not be installed on large trucks, SUVs and heavy trucks.
Our Car Tyres are designed to provide a safe driving experience in various weather conditions, and are suitable for various sports cars and conventional cars, and can be used in any season. They are made of stronger rubber materials and have good working performance, so can resist splitting and bruising even in cold weather and avoid frequent maintenance and replacement, helping saving your time and energy.
Our Car Tires are designed for a safe and efficient driving experience, which can provide you with better safety and save more costs. They are made of high-quality rubber materials and have good grip. They can achieve good grip and braking effect in various weather conditions. In addition, their low rolling resistance technology allows them to consume less fuel to power the tyres forward, saving costs for your rear pocket and the environment.
These Snow Tyres are made of different types of rubber mixtures and contain a large amount of silica and natural rubber materials, which enable these tires to remain flexible, perform better at lower temperatures, and effectively reduce the possibility of cracking. Moreover, they can be used in any season of the year. Even in cold and snowy days, they also have excellent performance and remain soft at low temperatures, thus providing greater grip and precise handling to ensure the safety of drivers.
Three-dimensional design of the travel surface and two-tire side-change angle, which enhances the friction of the tyre travel surface and the road surface, reduces noise and provides good comfortThe three-dimensional design of the travel surface and the two-tire side-change angle enhances the friction of the tire travel surface and the road surface, reduces noise and provides good comfort.
PCRV car tyre is load-pattern designed for light truck and van; High wear-resistant tread compound to improve tire mileage; Large tread pattern brings superior handling avility.
The tread design increase the friction between tires and ground,at the same improves the griping on dry and wet road condition,which makes drving smoothly.
Shoulder serrated three-dimensional sidewall design, increased tire grip on the ice and snow surface and braking power, greatly improving the safety of the ice and snow pavement.
What Are UHP Tires
Our UHP Tires are economical ultra-high performance tires, which provide reliable traction and handling on highways, and will bring you a highly smooth driving experience. Their patterned surfaces will hold the dry road tightly, drain water from the tread area using circumferential grooves, and provide reliable wet traction. Although their service life is shorter than that of all season tyres, they ensure that you achieve the highest level of road performance while driving.
Wide range of options
UHP tires can be fitted on cars and SUVs and are no longer monopolised by prestige brands. Today, these tyres also come in budget options that won't burn a hole in your pocket. It takes pride in its exhaustive range of local and global brands that offer UHP tires for your every budget and need. Before buying, consider the tyre's pros and cons, read reviews, and consult your owner's manual to ensure that they meet your manufacturer's recommendations.
Less chance of overheating
These tyres can handle the heat that goes with tyre exertion. When your tyre overheats, blowouts are possible, which may result in fatal accidents. But because of their cutting-edge internal construction and materials, UHP tires have strong heat-dissipating abilities, keeping you and your loved ones safe during those hot summer days.
Boosted driving pleasure
UHP tires let you realise that the journey is indeed the destination. The adventure begins as soon as you rev up your engine and hit the road, feeling the smooth interaction between you and your car. For performance-seekers, driving is a way to enjoy life to its fullest.
Excellent steering response
With crisp and precise steering, you feel you're in total control of your drive. UHP tires give you impeccable steering response even in wet conditions, helping you avoid mishaps. Also boosting your safety are this tyre's ability to navigate tight corners and its excellent handling.
UHP tyres have become more common in recent years as vehicles of all types – from family saloons and sedans to SUVs, have become sportier and been fitted with larger, lower profile tyres. Typically UHP tyres are built from different rubber and silica compounds than standard tyres. This gives them the ability to grip and react at higher speeds than standard tyres.
Their tread patterns are carefully engineered to maximise the amount of tyre in contact with the road – the contact patch – and to keep a vehicle travelling smoothly in the direction the driver intends with tread blocks designed to maintain stability and control.
All this is combined to produce tyres which remain reliable and composed when fitted to finely-balanced vehicles with significant horsepower such as supercars, sports cars and premium SUVs.
UHP customers are demanding. They pay the premium price for their vehicles and expect the vehicle parts to perform at the highest level, including tires. The performance expectation is generally categorized into two categories of basic and additional performance.
First off, tires need to meet the basic expectation. They need to fit into the wheel, fit into the car, stay on the wheel, carry the load, have durability and perform at a high-speed level without signs of deterioration or separation. For a UHP tire to perform at all the basic tests, the following specific designs are often implemented:UHP tires often have a lower tread depth. While this is not ideal for tire longevity (wear) or snow performance, it helps the tire to perform at a higher speed by reducing heat buildup inside of the tire. In comparison to UHP summer tires, all-season tires have a deeper tread depth. This is due to their additional requirement of longer wear and performance in snow. UHP tires have softer/stickier compounds. This allows the tires to create maximum traction with the road. As UHP summer tires do not need to perform in snow, they run on a stickier/softer compound compared to all-season tires.
UHP tires typically use rayon instead of polyester, in order to perform at higher speeds,. Rayon is a fabric made from purified cellulose fibers, which are typically created from wood pulp. The combination of properties such as high dimensional stability, good dynamic performance and very good thermal resistance makes it the best choice for use in the carcass of UHP tires. For a UHP tire to perform at the highest level, specific designs are often implemented. We talked about how UHP tires often have lower tread depth, which helps the tire to have better overall handling and dry stopping distance. Below are a few other additional performances that fine-tune a tire to fit the UHP summer category.
UHP tires often use a very high level of silica in their tread compounds. Additional silica improves wet braking performance without a significant trade-off on wear. When it comes to rubber composition, a summer tire has a physical compound that is intended for temperatures generally above 40°F. Summer tires tend to have the stickiest compounds among the three tire types, giving them the most grip and best braking performance on wet/dry surfaces. But in colder temperatures, a summer tire's compound may begin to harden and lose traction, increasing the risk of slipping or skidding on the road surface. The rubber composition of the all-season tire generally splits the difference between a winter tire and a summer tire, so it can remain relatively flexible in freezing temperatures and also provide the rigidity to be effective in warmer climates.
UHP tires are an investment in your driving experience. To ensure they continue to provide a top-tier performance you'll want to take proper care of them. Here's our top tire maintenance tips to ensure that your UHP tires go the distance:
Never drive on them in winter
You should change out your UHP summer tires as soon as the average temperature drops below 40 degrees. While UHP all-season tires can be driven year-round in some areas, with our New England winters we recommend replacing them with a set of winter tires. Not only will changing out your tires maintain safe levels of performance, you'll also preserve them for more months of summer driving.
Give your tires a regular review and spot check
Regularly inspect your tires for damage and excessive wear, especially before you reinstall them in the spring. That way you can safely repair the tires if needed or replace them if necessary.
Always install a full set of tires
Your vehicle runs best when all four tires have the same amount of wear. If you can only afford to mount a set of two tires, then mount them on the rear even if your vehicle is front-wheel drive. This keeps the back end of your vehicle more in control and helps to prevent fishtailing. However, if you have an all-wheel drive vehicle then you must change all four tires at the same time, no exceptions.
Rotate and balance your tires to increase longevity
Your tires will experience different levels of wear depending on where they're mounted. Regularly rotating your tires evens out the level of wear, helping to ensure they last as long as possible.
Check your tire pressure regularly
Overinflated and underinflated tires will wear out faster. Colder weather reduces air pressure and deflates your tires, with every 10-degree drop causing a loss of one pound of psi (pounds per square inch). UHP tires are especially susceptible to shrinkage in lower temperatures due to their softer rubber, so keep an eye on them if you're expecting a streak of cold weather during the fall or spring seasons.
Ensure they're aligned properly
Misaligned tires can lead to increased and uneven wear, reduced traction, lower fuel efficiency, and an uncomfortable driving experience. Get the best performance possible out of your high-performance tires with a proper alignment.
Tire composition and material
First off, tire composition and material make a world of difference in application. When we talk about supercars and other high-performance vehicles, we're typically focusing on dry and wet conditions.
Tread pattern design
Tread design plays a crucial role in a tire's grip on the road. Various tread patterns differ in their ability to move water away and prevent hydroplaning among other characteristics such as handling, traction in weather conditions, and fuel efficiency.
Tire width and aspect ratio
Wider tires provide a larger contact area with the road to improve traction and handling, as well as stability during high-speed cornering. On the other hand, you have your aspect which is the height of the tire's sidewall as a percentage of its width. A lower aspect ratio means a shorter sidewall, which enhances handling and steering response but can result in a firmer ride. This is why almost all supercars come with low-profile tires.
Performance ratings (speed and load index)
When you're sitting in a ferrari 488 gtb with a top speed of 330 km/h (205 mph), you'll need a tire that doesn't disintegrate when you hit that pedal. Speed ratings indicate the maximum speed that a tire can handle and as a result, supercar tires often have ratings such as y (186 mph) or zr (above 149 mph) to ensure they can withstand the vehicle's top speeds. Equally important is your load index, which shows the maximum weight a tire can support. A single tire with a load index of 95 can support up to 1,521 pounds (690 kg). The higher the load index number, the greater the load-carrying capacity of the tire. However, you'll also want to account for the fact that supercars typically run staggered setups, meaning that the rear tires are bigger than the front, and therefore have a higher load capacity.
Temperature and traction ratings
These ratings are determined through standardized tests conducted by tire manufacturers and are regulated by the dot to ensure consistency and reliability in the information provided to consumers.
Technological Advancements in UHP Tires
The UHP tire market benefits significantly from ongoing technological advancements. Tire manufacturers continually invest in research and development to enhance the performance characteristics of UHP tires. These advancements encompass several key areas.
Tread Compounds
Innovations in rubber compounds have improved grip, tread wear, and traction in various weather conditions, including wet and dry surfaces. Specialized silica compounds, for instance, enhance both grip and rolling resistance, contributing to fuel efficiency.
Tread Patterns
Unique tread patterns are designed to optimize traction, handling, and steering response. Tread patterns influence how the tire interacts with the road surface and provide stability during high-speed driving.
Construction Materials
Advancements in tire construction materials, including lightweight but robust materials like aramid fibers, contribute to improved handling, reduced rolling resistance, and increased durability.
Run-Flat and Self- Sealing Technologies
Many UHP tires are equipped with run-flat and self-sealing technologies, allowing drivers to continue driving even after a puncture. These innovations enhance safety and convenience.
Digital Tire Monitoring Systems (TPMS)
Tire manufacturers are integrating TPMS to provide real-time tire pressure and temperature data, enhancing safety and optimizing tire performance.
Sustainability Initiatives
Tire manufacturers are increasingly focused on sustainabilit, developing UHP tires with reduced rolling resistance to improve fuel efficiency and lower carbon emissions. These technological innovations contribute to the appeal of UHP tires among consumers who seek tires that offer exceptional performance, safety, and longevity.
Keman is a leading golbal provider of tyre and wheels,founded in 2002 by Keman Liu.After 17 years of development,the company has a broad influence in tyre and wheel industry field. Keman is committed to manufacture top quality tyres and wheels,bringing safety to every customers' automobile.At present the company has nearly 1100 patents,1800 employees.Our core value is Safety,Openness, Collaboration. Our products includes truck tyres,car tyres,industry tyres,OTR tyres,steels wheels,aluminum wheels with Keman brand and Polonez brand.Our tyres and wheels are widely used in automobile assembly plants and vehicle maintenance and repair markets over the world. At present,the technical index of products has reached standards of the US Department of Transportation(DOT) and the Economic Committee of Europe(ECE), ISO/TS 16949 Certificate ,furthermore,it has passed the certification of ISO9001 uality Management System ,ISO14000 environment system attestation.
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