Applicability of tires to speed, km/h
Tire designation meaning
175/ 80 R 14 88 N, where 175 = tire width, the number 80 under the line represents the ratio of the tire height to its width in percent. R = radial tire design; 14 = rim diameter in inches; 88 = symbol for load capacity (560 kg), and H = applicability of tires up to speed (210 km/h).
Each manufacturer designates the type of relief with its own signs. TWI tire designation (Treadwear indicator) indicates the allowable amount of relief wear (1.6 mm).
Load index
The tire inflation pressure is shown on a sticker on the inside of the fuel filler cap.
To extend the life of your tires, here are a few tips:
- tires older than six years can only be used if necessary and with appropriate careful driving;
- protect from exposure to chemicals aggressive to rubber (gasoline, oil, grease, brake fluid, coolant, thinner, etc.);
- protect from solar ultraviolet radiation (e.g. when parked for a long time);
- protect against mechanical damage that can occur as a result of hitting a sidewalk curb, driving over sharp stones, when the vehicle is overloaded, during sudden acceleration or heavy braking, or excessively fast cornering;
- tires are damaged if the camber is set incorrectly (geometry), under-pumping or, conversely, pumping;
- dynamically unbalanced wheels should not be used.
Tires RADIAL STEEL (radial design with steel cushion layer) especially sensitive to incorrect pumping and geometry. When driving on flat tires, separation of the carcass and the edge of the cushion layer belt often occurs. With cuts and cracks in the tread layer, water penetrates to the steel cushion layer under the tread.
Steel from this corrodes, which is especially manifested in local wear. These shortcomings pose the greatest danger in winter, when the roads are covered with salt.
Tires that are well cared for and used correctly will wear evenly. If a tire's tread shows uneven or excessive wear compared to others, a wear specialist can determine the most likely cause of the wear (for example, a flat tire, an over-inflated tire, incorrect wheel alignment, poor suspension, wheel imbalance, etc.).
In order to even wear, the manufacturer recommends replacing the front wheels with the rear wheels and vice versa, of course, provided that their direction of rotation is maintained, therefore on the same side, never crosswise.
The tire does not have a part number, but in case of a complaint, they are marked with their date of manufacture, coded according to the international DOT standard. The number in an oval frame consists of three digits. The first two digits indicate the week of manufacture of the tire, and the third - the last digit of the year (e.g. 486 = 48th week of 1996).