3 tyre materials

AUTOMOBILE

1. Tyre materials

2. Tyre materials For carcass:- At the time of second world war, staple cotton was the Tyre carcass material and it was replaced with rayon . Then nylon was introduced which is stronger, more elastic and cooler running than rayon. Then terylene was introduced.

3. For cords of stabilizer belts:- Rayon ,Terylene ,glass fibre or steel. Rubber :- Rubber used in tyres is blend of natural and synthetic rubbers to which various chemicals are added to obtain desired properties like wear resistance ,reduced hysteresis, less internal friction.

4. Actual components that go into a tire . Raw Rubber Steel Nylon Polyester Rayon Carbon Black Synthetic Rubber Fiberglass Aramid Brass Aramid: A synthetic fabric used in some tires that is (pound-for-pound) stronger than steel.

5. Most people think tires are made mostly of rubber. This is far from the truth at all . A tire consist of many different things such as steel, nylon, polyester, rayon, carbon black, synthetic rubber (which is man made rubber), fiberglass which is light weight but add strength, aramid, brass . All these things help add strength, heat distribution, lower the actually weight of the tire, also help protect it from natural weathering (sun, wind, rain, snow).

6. Aspect Ratio

7. Tyre designation

8. Aspect Ratio Percentage of tires height in relation to it’s width. A 60 series tire height will be 60% of the width. The aspect ratio can be a 40,50, 60,65,70,75,78 These are some of the most common ones.

9. Aspect Ratio So if we have a P205/60R15 tire. The width is 205 millimeters and the height is 60% of the width. That means 205 x .6 = 123 millimeters. That tire should be 123 millimeters tall . You can raise or lower your car by changing the height of the side wall.

10. Tyre Specifications

11. Tyre Specifications P 205/55 V R 16 TYPE P - PASSENGER T - TEMPORARY LT - LIGHT TRUCK C - COMMERCIAL WIDTH (MILLIMETERS) 145-315 ASPECT RATIO (HEIGHT/WIDTH %) 55, 60, 65 70 ETC TYPE B - BIAS-BELTED D - DIAGONAL BIAS R - RADIAL RIM DIAMETER (INCHES) 13, 14 ETC P 205/55 V R 16 P 205 /55 V R 16 P 205/ 55 V R 16 P 205/55 V R 16 P 205/55 V R 16 P 205/55 V R 16 P 205/55 V R 16 SPEED RATING B (31 MPH) - V (150 MPH) - Z (OVER 150 MPH) Next >

12. Tire Size LT = Light Truck

13. Tire Sidewall

14. Tire Sidewall

15. Ply Rating / load range

16. Letter Maximum Rated Speed L 120 km/h (75 mph) M 130 km/h (81 mph) N 140 km/h (87 mph) P 150 km/h (93 mph) Q 160 km/h (99 mph) R 170 km/h (106 mph) S 180 km/h (112 mph) T 190 km/h (118 mph) U 200 km/h (124 mph) H 210 km/h (130 mph) V 240 km/h (149 mph) W 270 km/h (168 mph) Y 300 km/h (185 mph) Z Open-ended* *The exact speed rating for a particular Z-rated tire is determined by the tire manufacturer and may vary according to size. For example, not all Brand X Z-rated tires are rated at 170 mph, even though one size may be capable of these speeds. speed rating

17. Factors affecting tyre life Inflation Vehicle maintenance Manner of driving Miscellaneous factors

18. Tyre trouble shooting Side wear of tyres One side wear of tyres Centre wear of tyre tread Uneven tyre wear Uniform rapid wear Rapid wear with feathered edges on the tread Tread cracking Tread or ply separation Loss of tyre pressure Radial tyre lead Radial tyre waddle

19. Tyre manufacturing

20. Pneumatic Tire

21. What Is Pneumatic Tire? Filled by air, especially compressed air: a pneumatic tire (dictionary definition ). All tires manufactured today are considered Pneumatic tires.