NANKANG PRODUCT INTRODUCTION

Nankang Tire Pattern Feature

CW-25 NS-2 NS-20 AS-1 RX-615 CONTENTS XR-611 SP-7 CW-20

1.NS-2

NANKANG PERFORMANCE SPORT TIRE, NS-2, THE UNIQUE Series:30/35/40/45/50/55 Inch:16”~19” SUMMER TIRE SPORT SERIES HANDLING COMFORT LOW NOISE DURABILITY DRAINAGE FURL SAVING NS-2 NANKANG PERFORMANCE SPORT TIRE, NS-2, THE UNIQUE V-SHAPED PATTERN CAN DRAIN MORE EFFICIENTLY IN HIGH SPEED CONDITIONS.

V-PATTERN SHOULDER SIPE Two-in-One PATTERN DRAINAGE The two center groove design can efficiently enhance superior wet handling and drainage ability. SHOULDER SIPE The tire shoulder edge sipes design promote equal and long distance tread wear. Two-in-One PATTERN The Two-in-One pitches are designed to reduce pattern noise and promote comfort when driving. V-PATTERN “V” sub-grooves pattern in the design, increase drainage on wet road conditions.

The directional tire drainage is superior than non-directional tires, especially the main grooves that can drain water much better on wet road conditions, The V-SHAPED pattern is designed to also assist the drainage from the tread to tire shoulder, improving how the tire displaces water.

2.NS-20

NS-20 is an elegant design without losing it's wild Performance. It is also a quiet, comfortable multi function tire. NS-20 also adopted new technology such as Dual- Layer Tread, Micro Vent, Comfort Profile designed, and 5 Pitche arrangement for low noise tire pattern designs. SUMMER TIRE SPORT SERIES HANDLING COMFORT LOW NOISE DURABILITY DRAINAGE FURL SAVING NS-20 The 5 pitch design can effectively reduce the noise generated by the tire tread.

LATERAL SIPES SUB-STRAIGHT GROOVES SHOULDER SIPES Tiny lateral sipes will reduce tire pattern noise. STRAIGHT WIDE GROOVES Four straight grooves enhance drainage efficiency and handling on wet road conditions. SUB-STRAIGHT GROOVES The two sub-straight grooves on the tire shoulders enhance The main grooves drainage efficiency. SHOULDER SIPES Sipes on the tire shoulders reduce block rigidity, lower pattern noise and increase comfort.

The Initial Dual Layer Tread is shown below The Initial Dual Layer Tread is shown below. After using a tire for a period of time (wear conditions depending on driver influence), then the soft sub-Layer compound appears. Take 225/40R18 92 W NS-20 as an example, the size groove depth is 8.1mm, when the 1st layer tread finish wearing (About 5,000km), which is half of the depth(4.0mm), then the 2nd tread will appear.

Initial Dual Layer Tread Tire wear after a period of time can still maintain the same performance of a new tire.

Micro Vent (non-trimmed) Green tire rubber melting evenly covered with mold, the air is discharged from mold tiny hole. Rubber into the tiny hole when the air drained, then rubber becomes needle shape on tire surface after curing procedure. Conventional Tire Vent Diameter 1.3mm Tire Vent Diameter 0.6mm

Comfort Profile Design

NS-20 in JARI (Japan Automobile Research Institute) Wet Road Braking Test Dry Road Braking Test

NS-20 in JARI (Japan Automobile Research Institute) Slalom Test

3.AS-1 Series:35/40/45/50/55/60/65 Inch:13”~19” SUMMER TIRE COMFORT SERIES HANDLING LOW NOISE DURABILITY DRAINAGE FURL SAVING AS-1 AS-1 is an asymmetric tire, the outside pattern is focus on control and grip performance; the inside pattern is designed with comfort and low noise. The AS-1 is a multi-function tire with performance and comfort abilities in equal measure.

In order reduce road noise, AS-1 uses a 2-in-1 pattern STRAIGHT WIDE GROOVES Four straight grooves design enhance drainage efficiency to upgrade safety on wet road conditions. SHOULDER GROOVE Unique straight groove design on the shoulder are to increase rigidity and prevent irregular wear. TWO IN ONE PATTERN In order reduce road noise, AS-1 uses a 2-in-1 pattern and multi-pitch design.

AS-1 Contact Patch The Contact patch is the portion of a vehicle's tire that is in actual contact with the road surface. It is most commonly used in the discussion of Pneumatic tires where the term is strictly used to describe the portion of the tire’s tread that touches the road surface. The term Footprint is also used to describe this.

4.RX-615 Series:45/50/55/60/65/70/80 Inch:12”~17” SUMMER TIRE COMFORT SERIES HANDLING LOW NOISE DURABILITY DRAINAGE FURL SAVING RX-615 RX-615 is designed as a comfort tire, the tire tread adopts computer simulation for the 5 pitch design pattern arrangement, the multi lateral sipes to reduce tread rigidity, increase comfortability.

Lateral grooves & Multi-Sipes STRAIGHT WIDE GROOVES SUB GROOVES The lateral grooves are designed to reduce noise generation from the tire. The Multi-Sipes are designed to deduce rigidity and keep driving comfortable. STRAIGHT WIDE GROOVES The Four straight grooves are designed to enhance drainage efficiency and to maximize safety on wet road conditions. SUB GROOVES The Tire shoulder sub-straight grooves are designed to reduce tread rigidity

5 Pitches on RX-615 A B C D E The NANKANG RX-615 is not designed as a competitive tires, but mainly to be a comfortable tire. A comfort tire of course must also address road noise. The RX-615 design features a physical characteristic called "Frequency Transformation“, to reduce the noise caused by the tire blocks. This method is used in the 5 different sizes placed In RX-615, and using computer simulation of different sizes combinations to make the tire rolling noise generated varies frequency. The optimized tread design can greatly reduce the amount of road noise from a tire.

NOISE TEST BETWEEN RX-615 AND CONVENTION TIRE(NE-826) 61.3 The New generation low noise tire, RX-615, uses computerized multi-pitch simulation technology with multi-siped pattern design to reduce tire noise generation. 60.4 NE-826 Noise Level (dB) 59.3 RX-615 NE-826 52.8 RX-615 40(Km/hr) 80(Km/hr) Velocity (Km/hr)

5.XR-611 Series:45/50/55/60/65/80 Inch:13”~18” SUMMER TIRE COMFORT SERIES HANDLING LOW NOISE DURABILITY DRAINAGE FURL SAVING XR-611 XR-611 is designed using computer simulation for comfort and drainage, plus multi-pitches to reduce the noise generated by the tire tread.

STRAIGHT WIDE GROOVES GRADUAL WIDEN GROOVES Four straight grooves are designed to enhance drainage efficiency and to maximize safety on wet road conditions. GRADUAL WIDEN GROOVES The gradual widening of grooves are designed to enhance drainage efficiency.

6.SP-7 Series:30/35/40/45/55/60/65 Inch:17”, 18”, 20”, 22”, 24” SUMMER TIRE UTILITY SERIES HANDLING COMFORT LOW NOISE DURABILITY DRAINAGE FURL SAVING SP-7 The SP-7 is a non-directional pattern designed for medium-sized SUV vehicles. The SP-7 arc tread block pattern will enhance the drainage Efficiency. The tire shoulder design will reduce the tire tread noise generated.

GROOVES DESIGNED PREVENT NOISE BAR The Two straight grooves and arc sub-grooves designed enhance water drainage efficiency. PREVENT NOISE BAR The noise prevention bar on tire shoulder grooves will reduce pattern noise

(7dB gap) SP-7 Noise Test SP-7:73.5dB Conventional Tire:80.5dB Test Conditions Date: Sep, 2009 Ground Temperature: 44.3ﾟC Wind Velocity: 3~6m/s Tire Size: 265/70R16 112T Test Rim: 16x7.5J Tire pressure: 350Kpa Test Vehicle: Mitsubishi Pajaro 3.5 SP-7 Noise Test (7dB gap) SP-7:73.5dB Conventional Tire:80.5dB dB

7.CW-20 Series:60/65/70/75 Inch:15”~17” SUMMER TIRE VAN SERIES HANDLING COMFORT LOW NOISE DURABILITY DRAINAGE FURL SAVING CW-20 CW-20 is commercial tire for general roads as asphalt. To enhance the VAN series of performance, CW-20 strengthens tire shoulder rigidity to reduce irregular tire wearing. Another characteristic is to add tiny sipes on the tire shoulder grooves to maintain comfort ability.

Rigidity Enhance STRAIGHT GROOVES Four straight grooves ensure driving safety on wet road. Rigidity Enhance The tire shoulder rigidity design could prevent irregular wear. The sipes in the bottom of tire shoulder grooves keep ensure the tread maintains flexibility.

8.CW-25 Series:70/80 Inch:12”~16” SUMMER TIRE VAN SERIES HANDLING COMFORT LOW NOISE DURABILITY DRAINAGE FURL SAVING CW-25 This new commercial tire, CW-25, is designed for general road use, it’s main focus is on durability and wear resistance abilities, the consistent tread pattern block will not only increase rigidity, but can also can carry the heavy weight of loading.